./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/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 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f --- 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 11:43:55,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:43:55,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:43:55,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:43:55,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:43:55,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:43:55,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:43:55,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:43:55,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:43:55,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:43:55,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:43:55,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:43:55,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:43:55,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:43:55,831 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:43:55,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:43:55,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:43:55,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:43:55,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:43:55,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:43:55,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:43:55,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:43:55,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:43:55,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:43:55,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:43:55,856 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:43:55,856 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:43:55,858 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:43:55,858 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:43:55,859 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:43:55,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:43:55,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:43:55,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:43:55,866 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:43:55,867 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:43:55,867 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:43:55,868 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:43:55,868 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:43:55,869 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:43:55,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:43:55,870 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:43:55,872 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:43:55,914 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:43:55,914 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:43:55,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:43:55,915 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:43:55,919 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:43:55,920 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:43:55,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:43:55,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:43:55,921 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:43:55,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:43:55,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:43:55,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:43:55,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:43:55,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:43:55,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:43:55,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:43:55,924 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:43:55,924 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:43:55,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:43:55,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:43:55,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:43:55,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:43:55,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:43:55,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:43:55,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:55,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:43:55,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:43:55,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:43:55,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:43:55,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:43:55,927 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:43:55,927 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:43:55,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:43:55,928 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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 859441835e916fdbcdc78c3c849990624cc8f637b8bbdd3bb312aaefa9b36e0f [2022-11-16 11:43:56,291 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:43:56,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:43:56,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:43:56,329 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:43:56,330 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:43:56,332 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-11-16 11:43:56,404 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/data/5076e05b1/588f6728b9184b1c9dd49aadedf20c09/FLAG2c8568aab [2022-11-16 11:43:56,988 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:43:56,999 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c [2022-11-16 11:43:57,027 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/data/5076e05b1/588f6728b9184b1c9dd49aadedf20c09/FLAG2c8568aab [2022-11-16 11:43:57,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/data/5076e05b1/588f6728b9184b1c9dd49aadedf20c09 [2022-11-16 11:43:57,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:43:57,238 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:43:57,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:57,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:43:57,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:43:57,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:57" (1/1) ... [2022-11-16 11:43:57,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ffd5e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:57, skipping insertion in model container [2022-11-16 11:43:57,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:43:57" (1/1) ... [2022-11-16 11:43:57,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:43:57,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:43:57,732 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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-11-16 11:43:57,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:57,929 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:43:57,980 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_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/sv-benchmarks/c/product-lines/elevator_spec2_product03.cil.c[29828,29841] [2022-11-16 11:43:58,033 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:43:58,072 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:43:58,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58 WrapperNode [2022-11-16 11:43:58,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:43:58,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:58,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:43:58,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:43:58,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,186 INFO L138 Inliner]: procedures = 92, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1071 [2022-11-16 11:43:58,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:43:58,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:43:58,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:43:58,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:43:58,198 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,205 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,237 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,248 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:43:58,248 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:43:58,249 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:43:58,249 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:43:58,250 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (1/1) ... [2022-11-16 11:43:58,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:43:58,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:43:58,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:43:58,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:43:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:43:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-16 11:43:58,370 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-16 11:43:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-16 11:43:58,370 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-16 11:43:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-16 11:43:58,371 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-16 11:43:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-16 11:43:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-16 11:43:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-16 11:43:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-16 11:43:58,372 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 11:43:58,372 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 11:43:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 11:43:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 11:43:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-16 11:43:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-16 11:43:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-16 11:43:58,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-16 11:43:58,373 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-16 11:43:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-16 11:43:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-16 11:43:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-16 11:43:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-16 11:43:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-16 11:43:58,374 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-16 11:43:58,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-16 11:43:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-16 11:43:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-16 11:43:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-16 11:43:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-16 11:43:58,375 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-16 11:43:58,375 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-16 11:43:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-16 11:43:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-16 11:43:58,376 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-16 11:43:58,376 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-16 11:43:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-11-16 11:43:58,377 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__base [2022-11-16 11:43:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:43:58,377 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-16 11:43:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-16 11:43:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-16 11:43:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-16 11:43:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-16 11:43:58,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-16 11:43:58,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:43:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:43:58,379 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-16 11:43:58,379 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-16 11:43:58,575 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:43:58,578 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:43:59,836 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:43:59,856 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:43:59,857 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:43:59,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:59 BoogieIcfgContainer [2022-11-16 11:43:59,862 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:43:59,865 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:43:59,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:43:59,869 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:43:59,869 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:43:57" (1/3) ... [2022-11-16 11:43:59,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585ff9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:59, skipping insertion in model container [2022-11-16 11:43:59,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:43:58" (2/3) ... [2022-11-16 11:43:59,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@585ff9c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:43:59, skipping insertion in model container [2022-11-16 11:43:59,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:43:59" (3/3) ... [2022-11-16 11:43:59,879 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product03.cil.c [2022-11-16 11:43:59,901 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:43:59,901 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:44:00,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:44:00,016 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;@61412788, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:44:00,016 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:44:00,029 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-16 11:44:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-16 11:44:00,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:00,087 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:00,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:00,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1217975181, now seen corresponding path program 1 times [2022-11-16 11:44:00,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:00,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901262234] [2022-11-16 11:44:00,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:00,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:00,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:44:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:44:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:01,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:01,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:01,281 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:01,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:01,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901262234] [2022-11-16 11:44:01,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901262234] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:01,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:01,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:01,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681876021] [2022-11-16 11:44:01,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:01,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:01,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:01,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:01,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:01,324 INFO L87 Difference]: Start difference. First operand has 545 states, 426 states have (on average 1.6948356807511737) internal successors, (722), 447 states have internal predecessors, (722), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 88 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:08,135 INFO L93 Difference]: Finished difference Result 1329 states and 2269 transitions. [2022-11-16 11:44:08,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:44:08,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-11-16 11:44:08,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:08,161 INFO L225 Difference]: With dead ends: 1329 [2022-11-16 11:44:08,162 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:08,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:08,174 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1810 mSDsluCounter, 1302 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 557 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 3331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 557 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:08,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 1791 Invalid, 3331 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [557 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-16 11:44:08,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:08,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6904761904761905) internal successors, (710), 439 states have internal predecessors, (710), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:08,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-11-16 11:44:08,425 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 102 [2022-11-16 11:44:08,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:08,426 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-11-16 11:44:08,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:08,427 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-11-16 11:44:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-16 11:44:08,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:08,436 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:08,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:44:08,437 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash -493393200, now seen corresponding path program 1 times [2022-11-16 11:44:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:08,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536433376] [2022-11-16 11:44:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:08,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:08,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:08,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:08,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:08,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 11:44:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:09,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:09,105 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:09,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:09,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536433376] [2022-11-16 11:44:09,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536433376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:09,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:09,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:09,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562862617] [2022-11-16 11:44:09,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:09,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:09,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:09,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:09,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:09,109 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:16,448 INFO L93 Difference]: Finished difference Result 1315 states and 2231 transitions. [2022-11-16 11:44:16,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:44:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-16 11:44:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:16,457 INFO L225 Difference]: With dead ends: 1315 [2022-11-16 11:44:16,457 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:16,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:16,461 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 950 mSDsluCounter, 1424 mSDsCounter, 0 mSdLazyCounter, 3044 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1029 SdHoareTripleChecker+Valid, 1917 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 3044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:16,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1029 Valid, 1917 Invalid, 3293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [249 Valid, 3044 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-16 11:44:16,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:16,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.688095238095238) internal successors, (709), 439 states have internal predecessors, (709), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:16,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 892 transitions. [2022-11-16 11:44:16,652 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 892 transitions. Word has length 105 [2022-11-16 11:44:16,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:16,653 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 892 transitions. [2022-11-16 11:44:16,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:16,654 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 892 transitions. [2022-11-16 11:44:16,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-16 11:44:16,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:16,659 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:16,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:44:16,660 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:16,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1657049085, now seen corresponding path program 1 times [2022-11-16 11:44:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:16,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394969979] [2022-11-16 11:44:16,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:16,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:16,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:44:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:44:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:17,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:17,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:17,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:17,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:17,211 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:17,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:17,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394969979] [2022-11-16 11:44:17,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394969979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:17,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:17,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:17,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581499909] [2022-11-16 11:44:17,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:17,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:17,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:17,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:17,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:17,231 INFO L87 Difference]: Start difference. First operand 537 states and 892 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:23,663 INFO L93 Difference]: Finished difference Result 1315 states and 2230 transitions. [2022-11-16 11:44:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:44:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-11-16 11:44:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:23,675 INFO L225 Difference]: With dead ends: 1315 [2022-11-16 11:44:23,675 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:23,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:23,680 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1376 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1455 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:23,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1455 Valid, 1829 Invalid, 3234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [401 Valid, 2833 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 11:44:23,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:23,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6857142857142857) internal successors, (708), 439 states have internal predecessors, (708), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 891 transitions. [2022-11-16 11:44:23,823 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 891 transitions. Word has length 106 [2022-11-16 11:44:23,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:23,823 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 891 transitions. [2022-11-16 11:44:23,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:23,824 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 891 transitions. [2022-11-16 11:44:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 11:44:23,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:23,828 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:23,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:44:23,828 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:23,829 INFO L85 PathProgramCache]: Analyzing trace with hash -455717396, now seen corresponding path program 1 times [2022-11-16 11:44:23,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:23,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353552870] [2022-11-16 11:44:23,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:23,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 11:44:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:44:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:24,373 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:24,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:24,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353552870] [2022-11-16 11:44:24,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353552870] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:24,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:24,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730115043] [2022-11-16 11:44:24,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:24,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:24,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:24,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:24,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:24,377 INFO L87 Difference]: Start difference. First operand 537 states and 891 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:30,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:30,810 INFO L93 Difference]: Finished difference Result 1315 states and 2229 transitions. [2022-11-16 11:44:30,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:44:30,811 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2022-11-16 11:44:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:30,817 INFO L225 Difference]: With dead ends: 1315 [2022-11-16 11:44:30,818 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:30,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:30,821 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 1785 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 2772 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 2772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:30,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1864 Valid, 1784 Invalid, 3320 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [548 Valid, 2772 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 11:44:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:30,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:30,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6833333333333333) internal successors, (707), 439 states have internal predecessors, (707), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:30,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 890 transitions. [2022-11-16 11:44:30,963 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 890 transitions. Word has length 107 [2022-11-16 11:44:30,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:30,963 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 890 transitions. [2022-11-16 11:44:30,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 890 transitions. [2022-11-16 11:44:30,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 11:44:30,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:30,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:30,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:44:30,969 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:30,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1583969447, now seen corresponding path program 1 times [2022-11-16 11:44:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:30,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835187643] [2022-11-16 11:44:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:31,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:44:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:44:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:31,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:31,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:31,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835187643] [2022-11-16 11:44:31,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835187643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:31,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:31,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796917845] [2022-11-16 11:44:31,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:31,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:31,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:31,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:31,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:31,526 INFO L87 Difference]: Start difference. First operand 537 states and 890 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:37,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:37,862 INFO L93 Difference]: Finished difference Result 1315 states and 2228 transitions. [2022-11-16 11:44:37,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:44:37,862 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2022-11-16 11:44:37,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:37,868 INFO L225 Difference]: With dead ends: 1315 [2022-11-16 11:44:37,869 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:37,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:44:37,872 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1784 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1863 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 3315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:37,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1863 Valid, 1771 Invalid, 3315 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [553 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 11:44:37,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:38,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:38,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.680952380952381) internal successors, (706), 439 states have internal predecessors, (706), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:38,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 889 transitions. [2022-11-16 11:44:38,012 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 889 transitions. Word has length 108 [2022-11-16 11:44:38,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:38,012 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 889 transitions. [2022-11-16 11:44:38,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 889 transitions. [2022-11-16 11:44:38,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 11:44:38,016 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:38,016 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:38,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:44:38,017 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:38,017 INFO L85 PathProgramCache]: Analyzing trace with hash 2037922056, now seen corresponding path program 1 times [2022-11-16 11:44:38,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:38,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128957012] [2022-11-16 11:44:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:38,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:44:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:44:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:38,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:38,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:38,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:38,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128957012] [2022-11-16 11:44:38,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128957012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:38,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:38,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:38,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427673415] [2022-11-16 11:44:38,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:38,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:38,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:38,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:38,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:38,605 INFO L87 Difference]: Start difference. First operand 537 states and 889 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:45,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:45,562 INFO L93 Difference]: Finished difference Result 1275 states and 2152 transitions. [2022-11-16 11:44:45,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2022-11-16 11:44:45,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:45,576 INFO L225 Difference]: With dead ends: 1275 [2022-11-16 11:44:45,576 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:45,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:44:45,590 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 1050 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 2948 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 3202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 2948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:45,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1902 Invalid, 3202 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 2948 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 11:44:45,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:45,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6690476190476191) internal successors, (701), 439 states have internal predecessors, (701), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:45,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 884 transitions. [2022-11-16 11:44:45,758 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 884 transitions. Word has length 109 [2022-11-16 11:44:45,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:45,759 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 884 transitions. [2022-11-16 11:44:45,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:45,759 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 884 transitions. [2022-11-16 11:44:45,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 11:44:45,763 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:45,764 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:45,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:44:45,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:45,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:45,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1361119109, now seen corresponding path program 1 times [2022-11-16 11:44:45,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:45,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522259591] [2022-11-16 11:44:45,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:45,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:44:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:44:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:46,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:46,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522259591] [2022-11-16 11:44:46,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522259591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:46,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:46,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:46,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309903551] [2022-11-16 11:44:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:46,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:46,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:46,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:46,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:46,342 INFO L87 Difference]: Start difference. First operand 537 states and 884 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:44:53,307 INFO L93 Difference]: Finished difference Result 1275 states and 2147 transitions. [2022-11-16 11:44:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:44:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 110 [2022-11-16 11:44:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:44:53,314 INFO L225 Difference]: With dead ends: 1275 [2022-11-16 11:44:53,314 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:44:53,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:44:53,318 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1039 mSDsluCounter, 1411 mSDsCounter, 0 mSdLazyCounter, 2922 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 3177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:44:53,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1898 Invalid, 3177 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 2922 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 11:44:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:44:53,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:44:53,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6571428571428573) internal successors, (696), 439 states have internal predecessors, (696), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:44:53,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 879 transitions. [2022-11-16 11:44:53,466 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 879 transitions. Word has length 110 [2022-11-16 11:44:53,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:44:53,467 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 879 transitions. [2022-11-16 11:44:53,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:44:53,468 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 879 transitions. [2022-11-16 11:44:53,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 11:44:53,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:44:53,471 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:44:53,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:44:53,472 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:44:53,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:44:53,472 INFO L85 PathProgramCache]: Analyzing trace with hash 103820333, now seen corresponding path program 1 times [2022-11-16 11:44:53,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:44:53,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896635601] [2022-11-16 11:44:53,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:44:53,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:44:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:44:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:44:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:44:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:44:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:44:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:44:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:44:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:44:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:44:53,994 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:44:53,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:44:53,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896635601] [2022-11-16 11:44:53,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896635601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:44:53,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:44:53,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:44:53,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193773036] [2022-11-16 11:44:53,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:44:53,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:44:53,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:44:53,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:44:53,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:44:53,997 INFO L87 Difference]: Start difference. First operand 537 states and 879 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:01,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:01,084 INFO L93 Difference]: Finished difference Result 1275 states and 2142 transitions. [2022-11-16 11:45:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 111 [2022-11-16 11:45:01,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:01,089 INFO L225 Difference]: With dead ends: 1275 [2022-11-16 11:45:01,089 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:45:01,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:01,093 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1028 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 2907 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:01,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 1884 Invalid, 3163 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 2907 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 11:45:01,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:45:01,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:45:01,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6452380952380952) internal successors, (691), 439 states have internal predecessors, (691), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:01,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 874 transitions. [2022-11-16 11:45:01,221 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 874 transitions. Word has length 111 [2022-11-16 11:45:01,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:01,221 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 874 transitions. [2022-11-16 11:45:01,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:01,222 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 874 transitions. [2022-11-16 11:45:01,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 11:45:01,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:01,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:45:01,226 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:01,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1968979958, now seen corresponding path program 1 times [2022-11-16 11:45:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:01,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405851336] [2022-11-16 11:45:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:01,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:45:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:01,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:01,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405851336] [2022-11-16 11:45:01,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405851336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:01,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:01,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625369473] [2022-11-16 11:45:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:01,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:01,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:01,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:01,779 INFO L87 Difference]: Start difference. First operand 537 states and 874 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:08,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:08,734 INFO L93 Difference]: Finished difference Result 1275 states and 2137 transitions. [2022-11-16 11:45:08,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:08,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-16 11:45:08,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:08,740 INFO L225 Difference]: With dead ends: 1275 [2022-11-16 11:45:08,740 INFO L226 Difference]: Without dead ends: 796 [2022-11-16 11:45:08,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:08,744 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 1033 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 2880 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 3133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:08,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1899 Invalid, 3133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 2880 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 11:45:08,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2022-11-16 11:45:08,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 537. [2022-11-16 11:45:08,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 420 states have (on average 1.6333333333333333) internal successors, (686), 439 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:08,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 869 transitions. [2022-11-16 11:45:08,886 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 869 transitions. Word has length 112 [2022-11-16 11:45:08,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:08,887 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 869 transitions. [2022-11-16 11:45:08,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:08,887 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 869 transitions. [2022-11-16 11:45:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 11:45:08,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:08,890 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:08,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:45:08,891 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:08,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:08,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1329589909, now seen corresponding path program 1 times [2022-11-16 11:45:08,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:08,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899083496] [2022-11-16 11:45:08,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:08,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:45:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:09,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:09,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:09,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:09,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899083496] [2022-11-16 11:45:09,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899083496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:09,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:09,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:09,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840730708] [2022-11-16 11:45:09,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:09,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:09,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:09,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:09,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:09,408 INFO L87 Difference]: Start difference. First operand 537 states and 869 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:16,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:16,670 INFO L93 Difference]: Finished difference Result 1290 states and 2152 transitions. [2022-11-16 11:45:16,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:45:16,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 112 [2022-11-16 11:45:16,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:16,676 INFO L225 Difference]: With dead ends: 1290 [2022-11-16 11:45:16,676 INFO L226 Difference]: Without dead ends: 817 [2022-11-16 11:45:16,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:16,679 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 1004 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2890 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 3142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:16,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 1905 Invalid, 3142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 2890 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 11:45:16,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-11-16 11:45:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 539. [2022-11-16 11:45:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6303317535545023) internal successors, (688), 441 states have internal predecessors, (688), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:16,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 871 transitions. [2022-11-16 11:45:16,819 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 871 transitions. Word has length 112 [2022-11-16 11:45:16,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:16,820 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 871 transitions. [2022-11-16 11:45:16,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:16,820 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 871 transitions. [2022-11-16 11:45:16,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 11:45:16,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:16,824 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:16,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:45:16,824 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:16,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:16,825 INFO L85 PathProgramCache]: Analyzing trace with hash 742443858, now seen corresponding path program 1 times [2022-11-16 11:45:16,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:16,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527959786] [2022-11-16 11:45:16,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:16,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:45:17,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:17,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:17,353 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:17,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:17,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527959786] [2022-11-16 11:45:17,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527959786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:17,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:17,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64133582] [2022-11-16 11:45:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:17,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:17,356 INFO L87 Difference]: Start difference. First operand 539 states and 871 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:24,201 INFO L93 Difference]: Finished difference Result 1281 states and 2138 transitions. [2022-11-16 11:45:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:45:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-16 11:45:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:24,206 INFO L225 Difference]: With dead ends: 1281 [2022-11-16 11:45:24,207 INFO L226 Difference]: Without dead ends: 800 [2022-11-16 11:45:24,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:45:24,210 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1020 mSDsluCounter, 1409 mSDsCounter, 0 mSdLazyCounter, 2850 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 3105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 1895 Invalid, 3105 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 2850 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 11:45:24,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2022-11-16 11:45:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 539. [2022-11-16 11:45:24,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 422 states have (on average 1.6184834123222749) internal successors, (683), 441 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:24,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 866 transitions. [2022-11-16 11:45:24,386 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 866 transitions. Word has length 113 [2022-11-16 11:45:24,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:24,386 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 866 transitions. [2022-11-16 11:45:24,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:24,387 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 866 transitions. [2022-11-16 11:45:24,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 11:45:24,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:24,390 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:45:24,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:24,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:24,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1641457, now seen corresponding path program 1 times [2022-11-16 11:45:24,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:24,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229439226] [2022-11-16 11:45:24,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:24,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:45:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:24,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:24,915 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:24,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:24,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229439226] [2022-11-16 11:45:24,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229439226] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:24,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:24,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:24,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211337871] [2022-11-16 11:45:24,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:24,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:24,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:24,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:24,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:24,918 INFO L87 Difference]: Start difference. First operand 539 states and 866 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:31,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:31,342 INFO L93 Difference]: Finished difference Result 1294 states and 2149 transitions. [2022-11-16 11:45:31,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:45:31,342 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 113 [2022-11-16 11:45:31,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:31,348 INFO L225 Difference]: With dead ends: 1294 [2022-11-16 11:45:31,348 INFO L226 Difference]: Without dead ends: 821 [2022-11-16 11:45:31,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:31,351 INFO L413 NwaCegarLoop]: 494 mSDtfsCounter, 1852 mSDsluCounter, 1299 mSDsCounter, 0 mSdLazyCounter, 2607 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 1793 SdHoareTripleChecker+Invalid, 3154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 2607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:31,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 1793 Invalid, 3154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [547 Valid, 2607 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 11:45:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-16 11:45:31,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 542. [2022-11-16 11:45:31,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 425 states have (on average 1.6141176470588234) internal successors, (686), 444 states have internal predecessors, (686), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:31,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 869 transitions. [2022-11-16 11:45:31,530 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 869 transitions. Word has length 113 [2022-11-16 11:45:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:31,531 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 869 transitions. [2022-11-16 11:45:31,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 869 transitions. [2022-11-16 11:45:31,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:45:31,534 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:31,535 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:31,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:45:31,535 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:31,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:31,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1440959631, now seen corresponding path program 1 times [2022-11-16 11:45:31,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:31,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554364437] [2022-11-16 11:45:31,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:31,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:31,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:31,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:31,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:45:32,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:32,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:32,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554364437] [2022-11-16 11:45:32,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554364437] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:32,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:32,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:45:32,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349681074] [2022-11-16 11:45:32,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:32,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:45:32,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:32,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:45:32,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:45:32,098 INFO L87 Difference]: Start difference. First operand 542 states and 869 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:45:39,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:39,991 INFO L93 Difference]: Finished difference Result 1298 states and 2155 transitions. [2022-11-16 11:45:39,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:45:39,991 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 114 [2022-11-16 11:45:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:39,997 INFO L225 Difference]: With dead ends: 1298 [2022-11-16 11:45:39,997 INFO L226 Difference]: Without dead ends: 828 [2022-11-16 11:45:40,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:45:40,001 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1865 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 4969 mSolverCounterSat, 563 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1945 SdHoareTripleChecker+Valid, 3197 SdHoareTripleChecker+Invalid, 5532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 563 IncrementalHoareTripleChecker+Valid, 4969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:40,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1945 Valid, 3197 Invalid, 5532 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [563 Valid, 4969 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-16 11:45:40,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-16 11:45:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 553. [2022-11-16 11:45:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 433 states have (on average 1.6096997690531178) internal successors, (697), 454 states have internal predecessors, (697), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-11-16 11:45:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 884 transitions. [2022-11-16 11:45:40,185 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 884 transitions. Word has length 114 [2022-11-16 11:45:40,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:40,186 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 884 transitions. [2022-11-16 11:45:40,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:45:40,187 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 884 transitions. [2022-11-16 11:45:40,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:45:40,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:40,191 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:40,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:45:40,192 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash -620255568, now seen corresponding path program 1 times [2022-11-16 11:45:40,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:40,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73781758] [2022-11-16 11:45:40,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:40,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:45:40,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:40,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:40,713 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:40,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:40,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73781758] [2022-11-16 11:45:40,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73781758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:40,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:40,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:40,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279664653] [2022-11-16 11:45:40,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:40,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:40,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:40,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:40,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:40,716 INFO L87 Difference]: Start difference. First operand 553 states and 884 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:47,233 INFO L93 Difference]: Finished difference Result 1321 states and 2186 transitions. [2022-11-16 11:45:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:45:47,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-16 11:45:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:47,240 INFO L225 Difference]: With dead ends: 1321 [2022-11-16 11:45:47,240 INFO L226 Difference]: Without dead ends: 845 [2022-11-16 11:45:47,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:45:47,244 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1857 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2611 mSolverCounterSat, 562 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 3173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 562 IncrementalHoareTripleChecker+Valid, 2611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:47,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 1757 Invalid, 3173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [562 Valid, 2611 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 11:45:47,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-16 11:45:47,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 557. [2022-11-16 11:45:47,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 437 states have (on average 1.6018306636155606) internal successors, (700), 458 states have internal predecessors, (700), 95 states have call successors, (95), 23 states have call predecessors, (95), 24 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-11-16 11:45:47,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 887 transitions. [2022-11-16 11:45:47,454 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 887 transitions. Word has length 114 [2022-11-16 11:45:47,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:47,454 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 887 transitions. [2022-11-16 11:45:47,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:47,455 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 887 transitions. [2022-11-16 11:45:47,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:45:47,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:47,458 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:47,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:45:47,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:47,459 INFO L85 PathProgramCache]: Analyzing trace with hash -2053472112, now seen corresponding path program 1 times [2022-11-16 11:45:47,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:47,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783943974] [2022-11-16 11:45:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:47,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:45:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:47,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:47,900 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:47,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:47,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783943974] [2022-11-16 11:45:47,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783943974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:47,901 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:47,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:47,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282799985] [2022-11-16 11:45:47,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:47,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:47,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:47,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:47,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:47,903 INFO L87 Difference]: Start difference. First operand 557 states and 887 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:45:54,163 INFO L93 Difference]: Finished difference Result 1363 states and 2229 transitions. [2022-11-16 11:45:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:45:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 114 [2022-11-16 11:45:54,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:45:54,169 INFO L225 Difference]: With dead ends: 1363 [2022-11-16 11:45:54,169 INFO L226 Difference]: Without dead ends: 804 [2022-11-16 11:45:54,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:45:54,172 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 1752 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2643 mSolverCounterSat, 545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1831 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 3188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 545 IncrementalHoareTripleChecker+Valid, 2643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:45:54,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1831 Valid, 1790 Invalid, 3188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [545 Valid, 2643 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 11:45:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-11-16 11:45:54,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 538. [2022-11-16 11:45:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 421 states have (on average 1.6104513064133017) internal successors, (678), 440 states have internal predecessors, (678), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:45:54,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 861 transitions. [2022-11-16 11:45:54,348 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 861 transitions. Word has length 114 [2022-11-16 11:45:54,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:45:54,349 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 861 transitions. [2022-11-16 11:45:54,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:45:54,349 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 861 transitions. [2022-11-16 11:45:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 11:45:54,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:45:54,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:45:54,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:45:54,353 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:45:54,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:45:54,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1452766988, now seen corresponding path program 1 times [2022-11-16 11:45:54,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:45:54,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555401216] [2022-11-16 11:45:54,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:45:54,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:45:54,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:45:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:45:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:45:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:45:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:45:54,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:45:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:45:54,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:45:54,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:45:54,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:45:54,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:45:54,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555401216] [2022-11-16 11:45:54,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555401216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:45:54,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:45:54,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:45:54,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226556273] [2022-11-16 11:45:54,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:45:54,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:45:54,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:45:54,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:45:54,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:45:54,861 INFO L87 Difference]: Start difference. First operand 538 states and 861 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:46:02,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:02,222 INFO L93 Difference]: Finished difference Result 1298 states and 2144 transitions. [2022-11-16 11:46:02,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:46:02,223 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 115 [2022-11-16 11:46:02,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:02,227 INFO L225 Difference]: With dead ends: 1298 [2022-11-16 11:46:02,227 INFO L226 Difference]: Without dead ends: 825 [2022-11-16 11:46:02,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:46:02,229 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 974 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 2820 mSolverCounterSat, 255 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 3075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 255 IncrementalHoareTripleChecker+Valid, 2820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:02,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 1905 Invalid, 3075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [255 Valid, 2820 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 11:46:02,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2022-11-16 11:46:02,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 543. [2022-11-16 11:46:02,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 426 states have (on average 1.6032863849765258) internal successors, (683), 445 states have internal predecessors, (683), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 87 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-16 11:46:02,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 866 transitions. [2022-11-16 11:46:02,416 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 866 transitions. Word has length 115 [2022-11-16 11:46:02,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 866 transitions. [2022-11-16 11:46:02,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:46:02,417 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 866 transitions. [2022-11-16 11:46:02,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 11:46:02,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:02,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:02,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:46:02,421 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:02,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:02,421 INFO L85 PathProgramCache]: Analyzing trace with hash -565790203, now seen corresponding path program 1 times [2022-11-16 11:46:02,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:02,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339419935] [2022-11-16 11:46:02,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:02,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:02,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:46:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:46:02,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:02,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:46:03,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:46:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:46:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:46:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:03,186 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-16 11:46:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:03,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339419935] [2022-11-16 11:46:03,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339419935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:03,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:03,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:46:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967805509] [2022-11-16 11:46:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:46:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:46:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:46:03,189 INFO L87 Difference]: Start difference. First operand 543 states and 866 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:46:18,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:18,497 INFO L93 Difference]: Finished difference Result 1551 states and 2689 transitions. [2022-11-16 11:46:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:46:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2022-11-16 11:46:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:18,507 INFO L225 Difference]: With dead ends: 1551 [2022-11-16 11:46:18,507 INFO L226 Difference]: Without dead ends: 1086 [2022-11-16 11:46:18,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:46:18,511 INFO L413 NwaCegarLoop]: 591 mSDtfsCounter, 2990 mSDsluCounter, 3635 mSDsCounter, 0 mSdLazyCounter, 10368 mSolverCounterSat, 1591 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2990 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 11959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1591 IncrementalHoareTripleChecker+Valid, 10368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:18,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2990 Valid, 4226 Invalid, 11959 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1591 Valid, 10368 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2022-11-16 11:46:18,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-16 11:46:18,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 552. [2022-11-16 11:46:18,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 433 states have (on average 1.5935334872979214) internal successors, (690), 451 states have internal predecessors, (690), 94 states have call successors, (94), 23 states have call predecessors, (94), 24 states have return successors, (108), 90 states have call predecessors, (108), 89 states have call successors, (108) [2022-11-16 11:46:18,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 892 transitions. [2022-11-16 11:46:18,703 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 892 transitions. Word has length 116 [2022-11-16 11:46:18,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:18,703 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 892 transitions. [2022-11-16 11:46:18,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:46:18,703 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 892 transitions. [2022-11-16 11:46:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 11:46:18,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:18,707 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:18,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:46:18,707 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:18,708 INFO L85 PathProgramCache]: Analyzing trace with hash -182072457, now seen corresponding path program 1 times [2022-11-16 11:46:18,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:18,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060677102] [2022-11-16 11:46:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:18,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:18,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:46:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:46:19,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:19,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:19,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:46:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:46:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:46:19,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:46:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,391 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:46:19,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:19,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060677102] [2022-11-16 11:46:19,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060677102] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:19,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395072538] [2022-11-16 11:46:19,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:19,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:19,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:19,396 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:19,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:46:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:19,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1431 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:46:19,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:19,776 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:46:19,776 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:19,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395072538] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:19,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:19,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:46:19,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320571473] [2022-11-16 11:46:19,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:19,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:46:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:19,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:46:19,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:46:19,779 INFO L87 Difference]: Start difference. First operand 552 states and 892 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:46:20,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:20,382 INFO L93 Difference]: Finished difference Result 1495 states and 2503 transitions. [2022-11-16 11:46:20,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:46:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2022-11-16 11:46:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:20,394 INFO L225 Difference]: With dead ends: 1495 [2022-11-16 11:46:20,394 INFO L226 Difference]: Without dead ends: 1021 [2022-11-16 11:46:20,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:46:20,397 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 769 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 2352 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:20,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 2352 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:46:20,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-11-16 11:46:20,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 1001. [2022-11-16 11:46:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 782 states have (on average 1.6317135549872124) internal successors, (1276), 812 states have internal predecessors, (1276), 174 states have call successors, (174), 40 states have call predecessors, (174), 44 states have return successors, (213), 174 states have call predecessors, (213), 169 states have call successors, (213) [2022-11-16 11:46:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1663 transitions. [2022-11-16 11:46:20,809 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1663 transitions. Word has length 117 [2022-11-16 11:46:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:20,810 INFO L495 AbstractCegarLoop]: Abstraction has 1001 states and 1663 transitions. [2022-11-16 11:46:20,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:46:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1663 transitions. [2022-11-16 11:46:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:46:20,813 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:20,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:20,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:21,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 11:46:21,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:21,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:21,022 INFO L85 PathProgramCache]: Analyzing trace with hash -846352067, now seen corresponding path program 1 times [2022-11-16 11:46:21,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:21,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862200151] [2022-11-16 11:46:21,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:21,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:46:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:46:21,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:46:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:46:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:46:21,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:46:21,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-16 11:46:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:21,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862200151] [2022-11-16 11:46:21,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862200151] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:21,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:21,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:46:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201078807] [2022-11-16 11:46:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:21,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:46:21,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:46:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:46:21,868 INFO L87 Difference]: Start difference. First operand 1001 states and 1663 transitions. Second operand has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:46:52,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:52,678 INFO L93 Difference]: Finished difference Result 4656 states and 8519 transitions. [2022-11-16 11:46:52,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:46:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-11-16 11:46:52,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:52,710 INFO L225 Difference]: With dead ends: 4656 [2022-11-16 11:46:52,710 INFO L226 Difference]: Without dead ends: 3733 [2022-11-16 11:46:52,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:46:52,719 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 5660 mSDsluCounter, 7822 mSDsCounter, 0 mSdLazyCounter, 20614 mSolverCounterSat, 2917 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5660 SdHoareTripleChecker+Valid, 9023 SdHoareTripleChecker+Invalid, 23531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2917 IncrementalHoareTripleChecker+Valid, 20614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:52,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5660 Valid, 9023 Invalid, 23531 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2917 Valid, 20614 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-11-16 11:46:52,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2022-11-16 11:46:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 2634. [2022-11-16 11:46:54,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2634 states, 1923 states have (on average 1.6219448777951118) internal successors, (3119), 2028 states have internal predecessors, (3119), 606 states have call successors, (606), 76 states have call predecessors, (606), 104 states have return successors, (836), 621 states have call predecessors, (836), 601 states have call successors, (836) [2022-11-16 11:46:54,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2634 states to 2634 states and 4561 transitions. [2022-11-16 11:46:54,262 INFO L78 Accepts]: Start accepts. Automaton has 2634 states and 4561 transitions. Word has length 118 [2022-11-16 11:46:54,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:54,262 INFO L495 AbstractCegarLoop]: Abstraction has 2634 states and 4561 transitions. [2022-11-16 11:46:54,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.466666666666667) internal successors, (82), 9 states have internal predecessors, (82), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:46:54,262 INFO L276 IsEmpty]: Start isEmpty. Operand 2634 states and 4561 transitions. [2022-11-16 11:46:54,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 11:46:54,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:54,269 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:54,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:46:54,269 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:54,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:54,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1741155577, now seen corresponding path program 1 times [2022-11-16 11:46:54,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:54,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101990300] [2022-11-16 11:46:54,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:54,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:54,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:46:54,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:46:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:46:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:46:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:46:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:46:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:46:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101990300] [2022-11-16 11:46:54,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101990300] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:46:54,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724557704] [2022-11-16 11:46:54,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:54,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:54,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:46:54,827 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:46:54,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:46:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:55,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:46:55,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:46:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-16 11:46:55,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:46:55,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724557704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:55,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:46:55,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 15 [2022-11-16 11:46:55,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635927638] [2022-11-16 11:46:55,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:55,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:46:55,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:46:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:46:55,342 INFO L87 Difference]: Start difference. First operand 2634 states and 4561 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:46:57,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:46:57,404 INFO L93 Difference]: Finished difference Result 5208 states and 9153 transitions. [2022-11-16 11:46:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:46:57,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-16 11:46:57,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:46:57,430 INFO L225 Difference]: With dead ends: 5208 [2022-11-16 11:46:57,430 INFO L226 Difference]: Without dead ends: 2660 [2022-11-16 11:46:57,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:46:57,445 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 812 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:46:57,445 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 2135 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:46:57,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2022-11-16 11:46:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 1083. [2022-11-16 11:46:57,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 846 states have (on average 1.6312056737588652) internal successors, (1380), 878 states have internal predecessors, (1380), 186 states have call successors, (186), 42 states have call predecessors, (186), 50 states have return successors, (230), 186 states have call predecessors, (230), 181 states have call successors, (230) [2022-11-16 11:46:57,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1796 transitions. [2022-11-16 11:46:57,955 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1796 transitions. Word has length 117 [2022-11-16 11:46:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:46:57,956 INFO L495 AbstractCegarLoop]: Abstraction has 1083 states and 1796 transitions. [2022-11-16 11:46:57,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:46:57,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1796 transitions. [2022-11-16 11:46:57,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:46:57,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:46:57,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:57,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:46:58,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:46:58,177 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:46:58,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:46:58,177 INFO L85 PathProgramCache]: Analyzing trace with hash 599562823, now seen corresponding path program 1 times [2022-11-16 11:46:58,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:46:58,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949221127] [2022-11-16 11:46:58,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:46:58,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:46:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:46:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:46:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:46:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-16 11:46:58,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-16 11:46:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:46:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 11:46:58,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:46:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:46:58,874 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:46:58,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:46:58,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949221127] [2022-11-16 11:46:58,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949221127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:46:58,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:46:58,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:46:58,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074578193] [2022-11-16 11:46:58,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:46:58,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:46:58,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:46:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:46:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:46:58,877 INFO L87 Difference]: Start difference. First operand 1083 states and 1796 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:47:30,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:47:30,081 INFO L93 Difference]: Finished difference Result 4772 states and 8675 transitions. [2022-11-16 11:47:30,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:47:30,081 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 120 [2022-11-16 11:47:30,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:47:30,110 INFO L225 Difference]: With dead ends: 4772 [2022-11-16 11:47:30,110 INFO L226 Difference]: Without dead ends: 3767 [2022-11-16 11:47:30,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 399 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:47:30,121 INFO L413 NwaCegarLoop]: 1231 mSDtfsCounter, 5612 mSDsluCounter, 8054 mSDsCounter, 0 mSdLazyCounter, 20191 mSolverCounterSat, 3038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5612 SdHoareTripleChecker+Valid, 9285 SdHoareTripleChecker+Invalid, 23229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 3038 IncrementalHoareTripleChecker+Valid, 20191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:47:30,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5612 Valid, 9285 Invalid, 23229 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [3038 Valid, 20191 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-11-16 11:47:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2022-11-16 11:47:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 2674. [2022-11-16 11:47:31,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2674 states, 1955 states have (on average 1.621994884910486) internal successors, (3171), 2064 states have internal predecessors, (3171), 606 states have call successors, (606), 80 states have call predecessors, (606), 112 states have return successors, (828), 621 states have call predecessors, (828), 601 states have call successors, (828) [2022-11-16 11:47:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2674 states to 2674 states and 4605 transitions. [2022-11-16 11:47:31,593 INFO L78 Accepts]: Start accepts. Automaton has 2674 states and 4605 transitions. Word has length 120 [2022-11-16 11:47:31,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:47:31,593 INFO L495 AbstractCegarLoop]: Abstraction has 2674 states and 4605 transitions. [2022-11-16 11:47:31,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 9 states have internal predecessors, (83), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:47:31,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2674 states and 4605 transitions. [2022-11-16 11:47:31,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 11:47:31,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:47:31,600 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:47:31,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 11:47:31,600 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:47:31,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:47:31,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1565421579, now seen corresponding path program 1 times [2022-11-16 11:47:31,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:47:31,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17936549] [2022-11-16 11:47:31,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:47:31,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:47:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:47:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:47:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:31,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:47:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:32,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:47:32,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:47:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:47:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:47:32,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:47:32,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:47:32,288 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:47:32,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:47:32,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17936549] [2022-11-16 11:47:32,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17936549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:47:32,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:47:32,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:47:32,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311930945] [2022-11-16 11:47:32,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:47:32,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:47:32,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:47:32,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:47:32,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:47:32,291 INFO L87 Difference]: Start difference. First operand 2674 states and 4605 transitions. Second operand has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:48:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:06,897 INFO L93 Difference]: Finished difference Result 10198 states and 19474 transitions. [2022-11-16 11:48:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:48:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 122 [2022-11-16 11:48:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:06,946 INFO L225 Difference]: With dead ends: 10198 [2022-11-16 11:48:06,946 INFO L226 Difference]: Without dead ends: 7610 [2022-11-16 11:48:06,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=337, Invalid=1555, Unknown=0, NotChecked=0, Total=1892 [2022-11-16 11:48:06,964 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 5634 mSDsluCounter, 7976 mSDsCounter, 0 mSdLazyCounter, 20574 mSolverCounterSat, 2925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5634 SdHoareTripleChecker+Valid, 9195 SdHoareTripleChecker+Invalid, 23499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2925 IncrementalHoareTripleChecker+Valid, 20574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:06,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5634 Valid, 9195 Invalid, 23499 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2925 Valid, 20574 Invalid, 0 Unknown, 0 Unchecked, 24.0s Time] [2022-11-16 11:48:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7610 states. [2022-11-16 11:48:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7610 to 5010. [2022-11-16 11:48:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5010 states, 3448 states have (on average 1.6038283062645011) internal successors, (5530), 3698 states have internal predecessors, (5530), 1380 states have call successors, (1380), 118 states have call predecessors, (1380), 181 states have return successors, (2115), 1417 states have call predecessors, (2115), 1375 states have call successors, (2115) [2022-11-16 11:48:10,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5010 states to 5010 states and 9025 transitions. [2022-11-16 11:48:10,205 INFO L78 Accepts]: Start accepts. Automaton has 5010 states and 9025 transitions. Word has length 122 [2022-11-16 11:48:10,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:10,205 INFO L495 AbstractCegarLoop]: Abstraction has 5010 states and 9025 transitions. [2022-11-16 11:48:10,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.6) internal successors, (84), 9 states have internal predecessors, (84), 4 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-16 11:48:10,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5010 states and 9025 transitions. [2022-11-16 11:48:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-16 11:48:10,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:10,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:10,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 11:48:10,213 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 306218379, now seen corresponding path program 1 times [2022-11-16 11:48:10,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:10,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464059453] [2022-11-16 11:48:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:10,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:48:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:48:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:48:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:48:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:48:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:10,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:10,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-16 11:48:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:48:11,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,070 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 11:48:11,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464059453] [2022-11-16 11:48:11,071 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464059453] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:11,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872791039] [2022-11-16 11:48:11,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:11,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:11,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:11,079 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:11,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:48:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:11,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:48:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:11,532 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:48:11,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:11,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872791039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:11,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:11,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-16 11:48:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856427649] [2022-11-16 11:48:11,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:11,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:48:11,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:48:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:48:11,535 INFO L87 Difference]: Start difference. First operand 5010 states and 9025 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:48:15,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:15,272 INFO L93 Difference]: Finished difference Result 9976 states and 18137 transitions. [2022-11-16 11:48:15,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:48:15,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2022-11-16 11:48:15,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:15,308 INFO L225 Difference]: With dead ends: 9976 [2022-11-16 11:48:15,308 INFO L226 Difference]: Without dead ends: 5060 [2022-11-16 11:48:15,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 144 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:48:15,353 INFO L413 NwaCegarLoop]: 824 mSDtfsCounter, 785 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:15,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2135 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:48:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5060 states. [2022-11-16 11:48:18,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5060 to 5052. [2022-11-16 11:48:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5052 states, 3482 states have (on average 1.6065479609419873) internal successors, (5594), 3740 states have internal predecessors, (5594), 1380 states have call successors, (1380), 124 states have call predecessors, (1380), 189 states have return successors, (2089), 1411 states have call predecessors, (2089), 1375 states have call successors, (2089) [2022-11-16 11:48:18,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5052 states to 5052 states and 9063 transitions. [2022-11-16 11:48:18,970 INFO L78 Accepts]: Start accepts. Automaton has 5052 states and 9063 transitions. Word has length 122 [2022-11-16 11:48:18,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:48:18,970 INFO L495 AbstractCegarLoop]: Abstraction has 5052 states and 9063 transitions. [2022-11-16 11:48:18,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:48:18,971 INFO L276 IsEmpty]: Start isEmpty. Operand 5052 states and 9063 transitions. [2022-11-16 11:48:18,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 11:48:18,978 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:48:18,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:48:18,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:19,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:19,185 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:48:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:19,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1822492423, now seen corresponding path program 1 times [2022-11-16 11:48:19,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:19,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328595571] [2022-11-16 11:48:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:19,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:48:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:48:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:48:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:19,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:19,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:48:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:48:20,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:48:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:48:20,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:48:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-16 11:48:20,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:20,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328595571] [2022-11-16 11:48:20,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328595571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:20,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:20,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-16 11:48:20,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804003552] [2022-11-16 11:48:20,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:20,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-16 11:48:20,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:20,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-16 11:48:20,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:48:20,085 INFO L87 Difference]: Start difference. First operand 5052 states and 9063 transitions. Second operand has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-16 11:48:58,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:48:58,968 INFO L93 Difference]: Finished difference Result 14321 states and 27335 transitions. [2022-11-16 11:48:58,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-16 11:48:58,969 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) Word has length 124 [2022-11-16 11:48:58,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:48:59,030 INFO L225 Difference]: With dead ends: 14321 [2022-11-16 11:48:59,031 INFO L226 Difference]: Without dead ends: 9363 [2022-11-16 11:48:59,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 558 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=418, Invalid=1838, Unknown=0, NotChecked=0, Total=2256 [2022-11-16 11:48:59,075 INFO L413 NwaCegarLoop]: 1380 mSDtfsCounter, 5131 mSDsluCounter, 9228 mSDsCounter, 0 mSdLazyCounter, 22465 mSolverCounterSat, 2805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5137 SdHoareTripleChecker+Valid, 10608 SdHoareTripleChecker+Invalid, 25270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2805 IncrementalHoareTripleChecker+Valid, 22465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:48:59,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5137 Valid, 10608 Invalid, 25270 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2805 Valid, 22465 Invalid, 0 Unknown, 0 Unchecked, 27.2s Time] [2022-11-16 11:48:59,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9363 states. [2022-11-16 11:49:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9363 to 5630. [2022-11-16 11:49:02,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5630 states, 4119 states have (on average 1.6283078417091528) internal successors, (6707), 4328 states have internal predecessors, (6707), 1270 states have call successors, (1270), 164 states have call predecessors, (1270), 240 states have return successors, (2005), 1303 states have call predecessors, (2005), 1265 states have call successors, (2005) [2022-11-16 11:49:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5630 states to 5630 states and 9982 transitions. [2022-11-16 11:49:02,950 INFO L78 Accepts]: Start accepts. Automaton has 5630 states and 9982 transitions. Word has length 124 [2022-11-16 11:49:02,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:02,951 INFO L495 AbstractCegarLoop]: Abstraction has 5630 states and 9982 transitions. [2022-11-16 11:49:02,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.3125) internal successors, (85), 10 states have internal predecessors, (85), 5 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-16 11:49:02,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5630 states and 9982 transitions. [2022-11-16 11:49:02,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 11:49:02,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:02,960 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:02,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 11:49:02,961 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:02,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:02,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1530434547, now seen corresponding path program 1 times [2022-11-16 11:49:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:02,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259086223] [2022-11-16 11:49:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:02,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:49:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:49:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:49:03,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:49:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:49:03,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:03,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:49:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:49:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:03,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:49:03,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:03,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259086223] [2022-11-16 11:49:03,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259086223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:03,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:03,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:49:03,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409067930] [2022-11-16 11:49:03,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:03,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:49:03,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:03,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:49:03,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:49:03,444 INFO L87 Difference]: Start difference. First operand 5630 states and 9982 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:49:14,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:14,406 INFO L93 Difference]: Finished difference Result 9871 states and 17997 transitions. [2022-11-16 11:49:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:49:14,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 123 [2022-11-16 11:49:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:14,445 INFO L225 Difference]: With dead ends: 9871 [2022-11-16 11:49:14,445 INFO L226 Difference]: Without dead ends: 6989 [2022-11-16 11:49:14,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:49:14,461 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 949 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 2843 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 3089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 2843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:14,461 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1986 Invalid, 3089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 2843 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:49:14,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6989 states. [2022-11-16 11:49:18,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6989 to 5636. [2022-11-16 11:49:18,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5636 states, 4125 states have (on average 1.6273939393939394) internal successors, (6713), 4334 states have internal predecessors, (6713), 1270 states have call successors, (1270), 164 states have call predecessors, (1270), 240 states have return successors, (2005), 1303 states have call predecessors, (2005), 1265 states have call successors, (2005) [2022-11-16 11:49:18,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5636 states to 5636 states and 9988 transitions. [2022-11-16 11:49:18,093 INFO L78 Accepts]: Start accepts. Automaton has 5636 states and 9988 transitions. Word has length 123 [2022-11-16 11:49:18,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:18,093 INFO L495 AbstractCegarLoop]: Abstraction has 5636 states and 9988 transitions. [2022-11-16 11:49:18,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-16 11:49:18,094 INFO L276 IsEmpty]: Start isEmpty. Operand 5636 states and 9988 transitions. [2022-11-16 11:49:18,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-16 11:49:18,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:18,103 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:18,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 11:49:18,103 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:18,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:18,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1999746357, now seen corresponding path program 1 times [2022-11-16 11:49:18,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:18,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216427380] [2022-11-16 11:49:18,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:18,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:49:18,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:49:18,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:49:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:49:18,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-16 11:49:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:18,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:49:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:49:18,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:18,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:49:18,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:18,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216427380] [2022-11-16 11:49:18,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216427380] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:18,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:18,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:49:18,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002310091] [2022-11-16 11:49:18,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:18,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:49:18,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:49:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:49:18,664 INFO L87 Difference]: Start difference. First operand 5636 states and 9988 transitions. Second operand has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:49:29,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:29,337 INFO L93 Difference]: Finished difference Result 8591 states and 15685 transitions. [2022-11-16 11:49:29,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:49:29,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 127 [2022-11-16 11:49:29,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:29,377 INFO L225 Difference]: With dead ends: 8591 [2022-11-16 11:49:29,378 INFO L226 Difference]: Without dead ends: 5423 [2022-11-16 11:49:29,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:49:29,396 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 1360 mSDsluCounter, 2906 mSDsCounter, 0 mSdLazyCounter, 4907 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 3419 SdHoareTripleChecker+Invalid, 5289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 4907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:29,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 3419 Invalid, 5289 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [382 Valid, 4907 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-16 11:49:29,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2022-11-16 11:49:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 4439. [2022-11-16 11:49:31,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4439 states, 3231 states have (on average 1.6224079232435777) internal successors, (5242), 3399 states have internal predecessors, (5242), 1022 states have call successors, (1022), 124 states have call predecessors, (1022), 185 states have return successors, (1636), 1047 states have call predecessors, (1636), 1017 states have call successors, (1636) [2022-11-16 11:49:31,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4439 states to 4439 states and 7900 transitions. [2022-11-16 11:49:31,802 INFO L78 Accepts]: Start accepts. Automaton has 4439 states and 7900 transitions. Word has length 127 [2022-11-16 11:49:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:31,802 INFO L495 AbstractCegarLoop]: Abstraction has 4439 states and 7900 transitions. [2022-11-16 11:49:31,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.0) internal successors, (90), 6 states have internal predecessors, (90), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:49:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 4439 states and 7900 transitions. [2022-11-16 11:49:31,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-16 11:49:31,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:31,808 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:49:31,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 11:49:31,808 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:31,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:31,809 INFO L85 PathProgramCache]: Analyzing trace with hash -958490172, now seen corresponding path program 1 times [2022-11-16 11:49:31,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:31,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121802160] [2022-11-16 11:49:31,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:31,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:49:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:31,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:49:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:49:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:49:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:49:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-16 11:49:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-16 11:49:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:32,444 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:49:32,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:32,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121802160] [2022-11-16 11:49:32,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121802160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:32,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:32,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:49:32,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198414185] [2022-11-16 11:49:32,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:32,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:49:32,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:32,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:49:32,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:49:32,448 INFO L87 Difference]: Start difference. First operand 4439 states and 7900 transitions. Second operand has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:49:46,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:46,970 INFO L93 Difference]: Finished difference Result 11834 states and 22245 transitions. [2022-11-16 11:49:46,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 11:49:46,971 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 128 [2022-11-16 11:49:46,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:47,023 INFO L225 Difference]: With dead ends: 11834 [2022-11-16 11:49:47,023 INFO L226 Difference]: Without dead ends: 7489 [2022-11-16 11:49:47,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2022-11-16 11:49:47,046 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 2705 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 4621 mSolverCounterSat, 1355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2715 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 5976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1355 IncrementalHoareTripleChecker+Valid, 4621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:47,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2715 Valid, 3615 Invalid, 5976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1355 Valid, 4621 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-16 11:49:47,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7489 states. [2022-11-16 11:49:49,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7489 to 4469. [2022-11-16 11:49:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4469 states, 3255 states have (on average 1.6178187403993856) internal successors, (5266), 3423 states have internal predecessors, (5266), 1022 states have call successors, (1022), 124 states have call predecessors, (1022), 191 states have return successors, (1644), 1053 states have call predecessors, (1644), 1017 states have call successors, (1644) [2022-11-16 11:49:49,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4469 states to 4469 states and 7932 transitions. [2022-11-16 11:49:49,777 INFO L78 Accepts]: Start accepts. Automaton has 4469 states and 7932 transitions. Word has length 128 [2022-11-16 11:49:49,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:49:49,777 INFO L495 AbstractCegarLoop]: Abstraction has 4469 states and 7932 transitions. [2022-11-16 11:49:49,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.8) internal successors, (88), 6 states have internal predecessors, (88), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:49:49,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4469 states and 7932 transitions. [2022-11-16 11:49:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-16 11:49:49,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:49:49,785 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:49:49,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 11:49:49,786 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:49:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:49:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2060413049, now seen corresponding path program 1 times [2022-11-16 11:49:49,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:49:49,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043891143] [2022-11-16 11:49:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:49:49,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:49:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:49:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:49:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:49:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:49:50,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-16 11:49:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:49:50,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-16 11:49:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:49:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:49:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:49:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:49:50,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043891143] [2022-11-16 11:49:50,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043891143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:49:50,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:49:50,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:49:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525976610] [2022-11-16 11:49:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:49:50,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:49:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:49:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:49:50,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:49:50,321 INFO L87 Difference]: Start difference. First operand 4469 states and 7932 transitions. Second operand has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:49:59,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:49:59,949 INFO L93 Difference]: Finished difference Result 7037 states and 12827 transitions. [2022-11-16 11:49:59,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:49:59,949 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 129 [2022-11-16 11:49:59,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:49:59,971 INFO L225 Difference]: With dead ends: 7037 [2022-11-16 11:49:59,971 INFO L226 Difference]: Without dead ends: 3776 [2022-11-16 11:49:59,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:49:59,988 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 1721 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 4789 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3203 SdHoareTripleChecker+Invalid, 5321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:49:59,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3203 Invalid, 5321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [532 Valid, 4789 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:49:59,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2022-11-16 11:50:01,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3188. [2022-11-16 11:50:01,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2297 states have (on average 1.6129734436221157) internal successors, (3705), 2423 states have internal predecessors, (3705), 760 states have call successors, (760), 84 states have call predecessors, (760), 130 states have return successors, (1240), 778 states have call predecessors, (1240), 755 states have call successors, (1240) [2022-11-16 11:50:01,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5705 transitions. [2022-11-16 11:50:02,000 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5705 transitions. Word has length 129 [2022-11-16 11:50:02,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:02,000 INFO L495 AbstractCegarLoop]: Abstraction has 3188 states and 5705 transitions. [2022-11-16 11:50:02,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 11:50:02,000 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5705 transitions. [2022-11-16 11:50:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-16 11:50:02,004 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:02,004 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 11:50:02,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 11:50:02,005 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:02,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:02,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1066623536, now seen corresponding path program 1 times [2022-11-16 11:50:02,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:02,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275586471] [2022-11-16 11:50:02,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:02,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:02,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-16 11:50:02,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:50:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:02,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:50:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-16 11:50:02,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-16 11:50:02,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275586471] [2022-11-16 11:50:02,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275586471] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:02,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545061135] [2022-11-16 11:50:02,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:02,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:02,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:02,617 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:02,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:50:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:02,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:50:02,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 11:50:03,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:03,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545061135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:03,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:03,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-11-16 11:50:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674120049] [2022-11-16 11:50:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:03,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:03,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:03,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:03,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:03,062 INFO L87 Difference]: Start difference. First operand 3188 states and 5705 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:50:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:05,437 INFO L93 Difference]: Finished difference Result 6339 states and 11505 transitions. [2022-11-16 11:50:05,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:05,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2022-11-16 11:50:05,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:05,454 INFO L225 Difference]: With dead ends: 6339 [2022-11-16 11:50:05,454 INFO L226 Difference]: Without dead ends: 3220 [2022-11-16 11:50:05,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:50:05,469 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 756 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:05,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [774 Valid, 2063 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:50:05,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2022-11-16 11:50:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3220. [2022-11-16 11:50:07,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 2325 states have (on average 1.6141935483870968) internal successors, (3753), 2451 states have internal predecessors, (3753), 760 states have call successors, (760), 88 states have call predecessors, (760), 134 states have return successors, (1244), 778 states have call predecessors, (1244), 755 states have call successors, (1244) [2022-11-16 11:50:07,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 5757 transitions. [2022-11-16 11:50:07,373 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 5757 transitions. Word has length 131 [2022-11-16 11:50:07,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:07,373 INFO L495 AbstractCegarLoop]: Abstraction has 3220 states and 5757 transitions. [2022-11-16 11:50:07,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 11:50:07,373 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 5757 transitions. [2022-11-16 11:50:07,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-16 11:50:07,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:07,377 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 11:50:07,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:07,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-16 11:50:07,577 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:07,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1211575526, now seen corresponding path program 1 times [2022-11-16 11:50:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:07,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673931919] [2022-11-16 11:50:07,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:07,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:08,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:08,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:08,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:50:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:50:08,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:50:08,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:08,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673931919] [2022-11-16 11:50:08,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673931919] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:08,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152085243] [2022-11-16 11:50:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:08,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:08,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:08,191 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:08,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:50:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:08,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 1471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 11:50:08,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:08,763 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 11:50:08,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:08,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152085243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:08,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:08,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-11-16 11:50:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793153523] [2022-11-16 11:50:08,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:08,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:08,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:08,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:08,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:08,765 INFO L87 Difference]: Start difference. First operand 3220 states and 5757 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-16 11:50:11,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:11,271 INFO L93 Difference]: Finished difference Result 3505 states and 6273 transitions. [2022-11-16 11:50:11,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:50:11,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 133 [2022-11-16 11:50:11,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:11,301 INFO L225 Difference]: With dead ends: 3505 [2022-11-16 11:50:11,301 INFO L226 Difference]: Without dead ends: 3486 [2022-11-16 11:50:11,305 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:11,306 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 795 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:11,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [803 Valid, 2098 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:50:11,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3486 states. [2022-11-16 11:50:13,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3486 to 3244. [2022-11-16 11:50:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 2349 states have (on average 1.607918263090677) internal successors, (3777), 2475 states have internal predecessors, (3777), 760 states have call successors, (760), 88 states have call predecessors, (760), 134 states have return successors, (1244), 778 states have call predecessors, (1244), 755 states have call successors, (1244) [2022-11-16 11:50:13,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5781 transitions. [2022-11-16 11:50:13,143 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5781 transitions. Word has length 133 [2022-11-16 11:50:13,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:13,143 INFO L495 AbstractCegarLoop]: Abstraction has 3244 states and 5781 transitions. [2022-11-16 11:50:13,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-11-16 11:50:13,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5781 transitions. [2022-11-16 11:50:13,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-16 11:50:13,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:13,147 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-16 11:50:13,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:13,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:13,348 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:13,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:13,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1528372511, now seen corresponding path program 1 times [2022-11-16 11:50:13,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:13,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348230645] [2022-11-16 11:50:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:13,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:13,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:13,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:50:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:50:13,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:50:13,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:13,962 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:50:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348230645] [2022-11-16 11:50:13,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348230645] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:13,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551824400] [2022-11-16 11:50:13,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:13,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:13,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:13,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:13,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:50:14,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:14,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:50:14,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-16 11:50:14,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:14,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551824400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:14,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:14,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2022-11-16 11:50:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073404596] [2022-11-16 11:50:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:14,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:14,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:14,328 INFO L87 Difference]: Start difference. First operand 3244 states and 5781 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 11:50:16,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:16,092 INFO L93 Difference]: Finished difference Result 3279 states and 5828 transitions. [2022-11-16 11:50:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:16,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 139 [2022-11-16 11:50:16,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:16,113 INFO L225 Difference]: With dead ends: 3279 [2022-11-16 11:50:16,114 INFO L226 Difference]: Without dead ends: 3260 [2022-11-16 11:50:16,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 165 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:50:16,117 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 37 mSDsluCounter, 2425 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3250 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:16,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3250 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:50:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-16 11:50:17,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3244. [2022-11-16 11:50:17,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3244 states, 2349 states have (on average 1.602809706257982) internal successors, (3765), 2475 states have internal predecessors, (3765), 760 states have call successors, (760), 88 states have call predecessors, (760), 134 states have return successors, (1244), 778 states have call predecessors, (1244), 755 states have call successors, (1244) [2022-11-16 11:50:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3244 states to 3244 states and 5769 transitions. [2022-11-16 11:50:17,856 INFO L78 Accepts]: Start accepts. Automaton has 3244 states and 5769 transitions. Word has length 139 [2022-11-16 11:50:17,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:17,857 INFO L495 AbstractCegarLoop]: Abstraction has 3244 states and 5769 transitions. [2022-11-16 11:50:17,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-16 11:50:17,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3244 states and 5769 transitions. [2022-11-16 11:50:17,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:50:17,861 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:17,861 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:50:17,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:18,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:18,062 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:18,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:18,062 INFO L85 PathProgramCache]: Analyzing trace with hash -106409074, now seen corresponding path program 1 times [2022-11-16 11:50:18,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:18,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741988632] [2022-11-16 11:50:18,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:18,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:18,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:50:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:50:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:50:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:50:18,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:18,736 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:50:18,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741988632] [2022-11-16 11:50:18,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741988632] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:18,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129831855] [2022-11-16 11:50:18,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:18,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:18,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:18,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:18,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:50:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:19,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 1524 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:50:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-16 11:50:19,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:19,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129831855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:19,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:19,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-16 11:50:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765193169] [2022-11-16 11:50:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 11:50:19,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 11:50:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:50:19,174 INFO L87 Difference]: Start difference. First operand 3244 states and 5769 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:50:21,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:21,680 INFO L93 Difference]: Finished difference Result 6427 states and 11669 transitions. [2022-11-16 11:50:21,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:21,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 150 [2022-11-16 11:50:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:21,701 INFO L225 Difference]: With dead ends: 6427 [2022-11-16 11:50:21,702 INFO L226 Difference]: Without dead ends: 3252 [2022-11-16 11:50:21,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:21,721 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 753 mSDsluCounter, 1265 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2060 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:21,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [771 Valid, 2060 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-16 11:50:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2022-11-16 11:50:23,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3252. [2022-11-16 11:50:23,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 2353 states have (on average 1.5966850828729282) internal successors, (3757), 2483 states have internal predecessors, (3757), 760 states have call successors, (760), 88 states have call predecessors, (760), 138 states have return successors, (1248), 778 states have call predecessors, (1248), 755 states have call successors, (1248) [2022-11-16 11:50:23,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 5765 transitions. [2022-11-16 11:50:23,663 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 5765 transitions. Word has length 150 [2022-11-16 11:50:23,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:23,663 INFO L495 AbstractCegarLoop]: Abstraction has 3252 states and 5765 transitions. [2022-11-16 11:50:23,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 11:50:23,663 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 5765 transitions. [2022-11-16 11:50:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:50:23,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:23,668 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:50:23,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:23,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-11-16 11:50:23,869 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:23,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -413231220, now seen corresponding path program 1 times [2022-11-16 11:50:23,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:23,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933556535] [2022-11-16 11:50:23,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:23,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:24,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:50:24,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:50:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:50:24,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:50:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:50:24,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:24,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933556535] [2022-11-16 11:50:24,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933556535] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:24,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223653817] [2022-11-16 11:50:24,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:24,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:24,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:24,475 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:24,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:50:24,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:24,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 1526 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:50:24,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:50:25,060 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:25,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [223653817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:25,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:25,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2022-11-16 11:50:25,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258175073] [2022-11-16 11:50:25,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:25,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:50:25,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:25,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:50:25,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:50:25,063 INFO L87 Difference]: Start difference. First operand 3252 states and 5765 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:50:30,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:30,748 INFO L93 Difference]: Finished difference Result 8814 states and 15835 transitions. [2022-11-16 11:50:30,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 11:50:30,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 150 [2022-11-16 11:50:30,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:30,781 INFO L225 Difference]: With dead ends: 8814 [2022-11-16 11:50:30,781 INFO L226 Difference]: Without dead ends: 5647 [2022-11-16 11:50:30,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-11-16 11:50:30,796 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 1467 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2123 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1568 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 2476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 2123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:30,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1568 Valid, 1278 Invalid, 2476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 2123 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-16 11:50:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5647 states. [2022-11-16 11:50:34,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5647 to 5430. [2022-11-16 11:50:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 3769 states have (on average 1.5608914831520297) internal successors, (5883), 4015 states have internal predecessors, (5883), 1452 states have call successors, (1452), 128 states have call predecessors, (1452), 208 states have return successors, (2378), 1482 states have call predecessors, (2378), 1447 states have call successors, (2378) [2022-11-16 11:50:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 9713 transitions. [2022-11-16 11:50:34,234 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 9713 transitions. Word has length 150 [2022-11-16 11:50:34,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:34,235 INFO L495 AbstractCegarLoop]: Abstraction has 5430 states and 9713 transitions. [2022-11-16 11:50:34,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 6 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:50:34,235 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 9713 transitions. [2022-11-16 11:50:34,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-16 11:50:34,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:34,243 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:50:34,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:34,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:34,452 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:34,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:34,453 INFO L85 PathProgramCache]: Analyzing trace with hash -1300454066, now seen corresponding path program 1 times [2022-11-16 11:50:34,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:34,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259028172] [2022-11-16 11:50:34,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:34,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:34,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:34,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:34,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:34,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:35,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-16 11:50:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-16 11:50:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-16 11:50:35,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-16 11:50:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-16 11:50:35,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:35,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259028172] [2022-11-16 11:50:35,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259028172] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:50:35,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767021096] [2022-11-16 11:50:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:35,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:50:35,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:50:35,122 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:50:35,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:50:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:35,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1529 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-16 11:50:35,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:50:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 11:50:35,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:50:35,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767021096] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:35,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:50:35,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 18 [2022-11-16 11:50:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078928864] [2022-11-16 11:50:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:35,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:50:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:35,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:50:35,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:50:35,620 INFO L87 Difference]: Start difference. First operand 5430 states and 9713 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 11:50:43,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:50:43,877 INFO L93 Difference]: Finished difference Result 11940 states and 21454 transitions. [2022-11-16 11:50:43,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:50:43,877 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 150 [2022-11-16 11:50:43,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:50:43,923 INFO L225 Difference]: With dead ends: 11940 [2022-11-16 11:50:43,924 INFO L226 Difference]: Without dead ends: 6599 [2022-11-16 11:50:43,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=132, Invalid=738, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:50:43,955 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2840 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 4296 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2916 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 4874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 4296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:50:43,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2916 Valid, 2844 Invalid, 4874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 4296 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 11:50:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6599 states. [2022-11-16 11:50:48,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6599 to 6050. [2022-11-16 11:50:48,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6050 states, 4245 states have (on average 1.5667844522968197) internal successors, (6651), 4513 states have internal predecessors, (6651), 1564 states have call successors, (1564), 146 states have call predecessors, (1564), 240 states have return successors, (2538), 1586 states have call predecessors, (2538), 1559 states have call successors, (2538) [2022-11-16 11:50:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6050 states to 6050 states and 10753 transitions. [2022-11-16 11:50:48,085 INFO L78 Accepts]: Start accepts. Automaton has 6050 states and 10753 transitions. Word has length 150 [2022-11-16 11:50:48,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:50:48,086 INFO L495 AbstractCegarLoop]: Abstraction has 6050 states and 10753 transitions. [2022-11-16 11:50:48,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 8 states have internal predecessors, (102), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-16 11:50:48,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6050 states and 10753 transitions. [2022-11-16 11:50:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-16 11:50:48,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:50:48,091 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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 11:50:48,099 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:50:48,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-16 11:50:48,292 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:50:48,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:50:48,292 INFO L85 PathProgramCache]: Analyzing trace with hash 2146278543, now seen corresponding path program 1 times [2022-11-16 11:50:48,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:50:48,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094278467] [2022-11-16 11:50:48,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:50:48,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:50:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:50:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:50:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:50:48,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:50:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:50:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:50:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:50:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:50:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 11:50:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-16 11:50:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-16 11:50:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:50:48,908 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-16 11:50:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:50:48,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094278467] [2022-11-16 11:50:48,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094278467] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:50:48,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:50:48,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-16 11:50:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389272937] [2022-11-16 11:50:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:50:48,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-16 11:50:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:50:48,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-16 11:50:48,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:50:48,911 INFO L87 Difference]: Start difference. First operand 6050 states and 10753 transitions. Second operand has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:51:11,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:11,027 INFO L93 Difference]: Finished difference Result 13155 states and 23944 transitions. [2022-11-16 11:51:11,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:51:11,028 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) Word has length 155 [2022-11-16 11:51:11,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:11,073 INFO L225 Difference]: With dead ends: 13155 [2022-11-16 11:51:11,074 INFO L226 Difference]: Without dead ends: 7194 [2022-11-16 11:51:11,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2022-11-16 11:51:11,100 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 3038 mSDsluCounter, 3721 mSDsCounter, 0 mSdLazyCounter, 7229 mSolverCounterSat, 923 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3100 SdHoareTripleChecker+Valid, 4329 SdHoareTripleChecker+Invalid, 8152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 923 IncrementalHoareTripleChecker+Valid, 7229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:11,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3100 Valid, 4329 Invalid, 8152 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [923 Valid, 7229 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-16 11:51:11,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7194 states. [2022-11-16 11:51:15,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7194 to 6340. [2022-11-16 11:51:15,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6340 states, 4489 states have (on average 1.5711739808420584) internal successors, (7053), 4757 states have internal predecessors, (7053), 1592 states have call successors, (1592), 164 states have call predecessors, (1592), 258 states have return successors, (2578), 1614 states have call predecessors, (2578), 1587 states have call successors, (2578) [2022-11-16 11:51:15,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6340 states to 6340 states and 11223 transitions. [2022-11-16 11:51:15,265 INFO L78 Accepts]: Start accepts. Automaton has 6340 states and 11223 transitions. Word has length 155 [2022-11-16 11:51:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:15,265 INFO L495 AbstractCegarLoop]: Abstraction has 6340 states and 11223 transitions. [2022-11-16 11:51:15,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.545454545454545) internal successors, (105), 8 states have internal predecessors, (105), 5 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 5 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-16 11:51:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 6340 states and 11223 transitions. [2022-11-16 11:51:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-16 11:51:15,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:15,271 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:51:15,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-16 11:51:15,272 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:15,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1260133001, now seen corresponding path program 1 times [2022-11-16 11:51:15,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:15,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619910412] [2022-11-16 11:51:15,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:15,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:51:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:51:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:51:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:51:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:51:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:51:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:51:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:51:16,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:51:16,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:51:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:51:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,036 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:51:16,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:16,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619910412] [2022-11-16 11:51:16,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619910412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:16,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23230249] [2022-11-16 11:51:16,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:16,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:16,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:16,038 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:16,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:51:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:16,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 1566 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:51:16,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:16,510 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 11:51:16,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:51:16,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23230249] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:16,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:16,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-16 11:51:16,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035601758] [2022-11-16 11:51:16,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:16,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:16,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:16,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:16,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:51:16,513 INFO L87 Difference]: Start difference. First operand 6340 states and 11223 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 11:51:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:51:29,923 INFO L93 Difference]: Finished difference Result 22463 states and 41989 transitions. [2022-11-16 11:51:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:51:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-11-16 11:51:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:51:30,044 INFO L225 Difference]: With dead ends: 22463 [2022-11-16 11:51:30,045 INFO L226 Difference]: Without dead ends: 16192 [2022-11-16 11:51:30,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:51:30,082 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 1815 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 1693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:51:30,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 930 Invalid, 1693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 1314 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 11:51:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16192 states. [2022-11-16 11:51:40,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16192 to 14772. [2022-11-16 11:51:40,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14772 states, 10160 states have (on average 1.5659448818897639) internal successors, (15910), 10854 states have internal predecessors, (15910), 4052 states have call successors, (4052), 322 states have call predecessors, (4052), 559 states have return successors, (7547), 4127 states have call predecessors, (7547), 4047 states have call successors, (7547) [2022-11-16 11:51:41,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14772 states to 14772 states and 27509 transitions. [2022-11-16 11:51:41,026 INFO L78 Accepts]: Start accepts. Automaton has 14772 states and 27509 transitions. Word has length 160 [2022-11-16 11:51:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:51:41,026 INFO L495 AbstractCegarLoop]: Abstraction has 14772 states and 27509 transitions. [2022-11-16 11:51:41,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 11:51:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 14772 states and 27509 transitions. [2022-11-16 11:51:41,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-16 11:51:41,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:51:41,041 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:51:41,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:51:41,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:41,243 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:51:41,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:51:41,244 INFO L85 PathProgramCache]: Analyzing trace with hash -409552112, now seen corresponding path program 1 times [2022-11-16 11:51:41,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:51:41,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40951752] [2022-11-16 11:51:41,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:41,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:51:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:51:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:51:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:51:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:51:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:51:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:51:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:51:41,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:51:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:51:41,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:51:41,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:51:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:41,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:51:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:51:42,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:51:42,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40951752] [2022-11-16 11:51:42,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40951752] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:51:42,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337953522] [2022-11-16 11:51:42,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:51:42,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:51:42,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:51:42,025 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:51:42,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:51:42,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:51:42,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:51:42,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:51:42,477 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 11:51:42,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:51:42,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [337953522] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:51:42,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:51:42,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-16 11:51:42,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994599639] [2022-11-16 11:51:42,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:51:42,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:51:42,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:51:42,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:51:42,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:51:42,479 INFO L87 Difference]: Start difference. First operand 14772 states and 27509 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 11:52:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:52:14,891 INFO L93 Difference]: Finished difference Result 53439 states and 107680 transitions. [2022-11-16 11:52:14,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:52:14,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 161 [2022-11-16 11:52:14,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:52:15,195 INFO L225 Difference]: With dead ends: 53439 [2022-11-16 11:52:15,195 INFO L226 Difference]: Without dead ends: 38736 [2022-11-16 11:52:15,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 196 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-16 11:52:15,310 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 1817 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1889 SdHoareTripleChecker+Valid, 888 SdHoareTripleChecker+Invalid, 1680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:52:15,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1889 Valid, 888 Invalid, 1680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-16 11:52:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38736 states. [2022-11-16 11:52:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38736 to 35673. [2022-11-16 11:52:42,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35673 states, 23855 states have (on average 1.5581639069377489) internal successors, (37170), 25673 states have internal predecessors, (37170), 10580 states have call successors, (10580), 638 states have call predecessors, (10580), 1237 states have return successors, (22989), 10817 states have call predecessors, (22989), 10575 states have call successors, (22989) [2022-11-16 11:52:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35673 states to 35673 states and 70739 transitions. [2022-11-16 11:52:43,284 INFO L78 Accepts]: Start accepts. Automaton has 35673 states and 70739 transitions. Word has length 161 [2022-11-16 11:52:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:52:43,285 INFO L495 AbstractCegarLoop]: Abstraction has 35673 states and 70739 transitions. [2022-11-16 11:52:43,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-16 11:52:43,285 INFO L276 IsEmpty]: Start isEmpty. Operand 35673 states and 70739 transitions. [2022-11-16 11:52:43,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 11:52:43,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:52:43,317 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-16 11:52:43,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-11-16 11:52:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-16 11:52:43,524 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:52:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:52:43,525 INFO L85 PathProgramCache]: Analyzing trace with hash 188655577, now seen corresponding path program 1 times [2022-11-16 11:52:43,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:52:43,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187037897] [2022-11-16 11:52:43,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:43,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:52:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:52:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:43,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:52:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:52:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 11:52:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:52:44,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:52:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-16 11:52:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-16 11:52:44,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-16 11:52:44,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 11:52:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-16 11:52:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-11-16 11:52:44,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,329 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-16 11:52:44,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:52:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187037897] [2022-11-16 11:52:44,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187037897] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:52:44,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812122188] [2022-11-16 11:52:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:52:44,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:52:44,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:52:44,331 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:52:44,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7a1ce10-d884-46e4-86eb-ba5fcd38c131/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 11:52:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:52:44,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1570 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-16 11:52:44,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:52:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-16 11:52:44,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:52:44,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812122188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:52:44,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:52:44,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-11-16 11:52:44,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627805470] [2022-11-16 11:52:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:52:44,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:52:44,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:52:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:52:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:52:44,807 INFO L87 Difference]: Start difference. First operand 35673 states and 70739 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 4 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17)