./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/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_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/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_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/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 2156ba1e79a86c856553f139302f2b9940a34efa4e31eb139d6bea893c29b00d --- 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 11:04:36,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:04:36,293 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:04:36,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:04:36,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:04:36,329 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:04:36,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:04:36,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:04:36,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:04:36,343 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:04:36,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:04:36,345 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:04:36,345 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:04:36,346 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:04:36,347 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:04:36,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:04:36,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:04:36,357 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:04:36,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:04:36,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:04:36,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:04:36,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:04:36,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:04:36,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:04:36,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:04:36,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:04:36,384 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:04:36,385 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:04:36,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:04:36,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:04:36,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:04:36,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:04:36,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:04:36,393 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:04:36,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:04:36,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:04:36,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:04:36,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:04:36,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:04:36,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:04:36,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:04:36,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:04:36,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:04:36,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:04:36,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:04:36,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:04:36,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:04:36,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:04:36,438 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:04:36,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:04:36,438 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:04:36,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:04:36,439 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:04:36,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:04:36,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:04:36,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:04:36,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:04:36,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:04:36,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:04:36,441 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:04:36,441 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:04:36,441 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:04:36,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:04:36,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:04:36,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:04:36,442 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:04:36,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:36,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:04:36,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:04:36,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:04:36,445 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:04:36,445 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:04:36,445 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:04:36,445 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:04:36,446 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:04:36,446 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_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2156ba1e79a86c856553f139302f2b9940a34efa4e31eb139d6bea893c29b00d [2022-11-16 11:04:36,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:04:36,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:04:36,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:04:36,745 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:04:36,746 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:04:36,748 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c [2022-11-16 11:04:36,841 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/data/6da41358e/faf167d3d6604e51817135f332cb9b27/FLAG858694543 [2022-11-16 11:04:37,546 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:04:37,546 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c [2022-11-16 11:04:37,579 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/data/6da41358e/faf167d3d6604e51817135f332cb9b27/FLAG858694543 [2022-11-16 11:04:37,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/data/6da41358e/faf167d3d6604e51817135f332cb9b27 [2022-11-16 11:04:37,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:04:37,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:04:37,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:37,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:04:37,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:04:37,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:37" (1/1) ... [2022-11-16 11:04:37,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8383732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:37, skipping insertion in model container [2022-11-16 11:04:37,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:04:37" (1/1) ... [2022-11-16 11:04:37,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:04:37,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:04:38,501 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_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c[71954,71967] [2022-11-16 11:04:38,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:38,527 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:04:38,648 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_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/sv-benchmarks/c/product-lines/elevator_spec9_product11.cil.c[71954,71967] [2022-11-16 11:04:38,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:04:38,673 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:04:38,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38 WrapperNode [2022-11-16 11:04:38,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:04:38,675 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:38,675 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:04:38,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:04:38,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,765 INFO L138 Inliner]: procedures = 93, calls = 335, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1088 [2022-11-16 11:04:38,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:04:38,766 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:04:38,766 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:04:38,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:04:38,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,821 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,833 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:04:38,834 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:04:38,834 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:04:38,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:04:38,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (1/1) ... [2022-11-16 11:04:38,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:04:38,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:04:38,889 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:04:38,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:04:38,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:04:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-16 11:04:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-16 11:04:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-16 11:04:38,951 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-16 11:04:38,951 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-16 11:04:38,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-16 11:04:38,954 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-16 11:04:38,954 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-16 11:04:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-16 11:04:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-16 11:04:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-16 11:04:38,955 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-16 11:04:38,955 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-16 11:04:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-16 11:04:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-16 11:04:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-16 11:04:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-16 11:04:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-16 11:04:38,956 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-16 11:04:38,956 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-16 11:04:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-16 11:04:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-16 11:04:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-16 11:04:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-16 11:04:38,957 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-16 11:04:38,957 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-16 11:04:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-16 11:04:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-16 11:04:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-16 11:04:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-16 11:04:38,958 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-16 11:04:38,958 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-16 11:04:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-16 11:04:38,959 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-16 11:04:38,959 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-16 11:04:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-16 11:04:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2022-11-16 11:04:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2022-11-16 11:04:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:04:38,960 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-16 11:04:38,960 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-16 11:04:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-16 11:04:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-16 11:04:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-16 11:04:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-16 11:04:38,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:04:38,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:04:38,962 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-16 11:04:38,962 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-16 11:04:39,178 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:04:39,197 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:04:40,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:04:40,576 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:04:40,578 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-16 11:04:40,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:40 BoogieIcfgContainer [2022-11-16 11:04:40,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:04:40,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:04:40,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:04:40,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:04:40,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:04:37" (1/3) ... [2022-11-16 11:04:40,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fa276c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:40, skipping insertion in model container [2022-11-16 11:04:40,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:04:38" (2/3) ... [2022-11-16 11:04:40,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8fa276c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:04:40, skipping insertion in model container [2022-11-16 11:04:40,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:04:40" (3/3) ... [2022-11-16 11:04:40,595 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product11.cil.c [2022-11-16 11:04:40,613 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:04:40,613 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:04:40,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:04:40,704 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;@7c06a812, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:04:40,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 11:04:40,711 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 450 states have internal predecessors, (729), 91 states have call successors, (91), 23 states have call predecessors, (91), 23 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-16 11:04:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-16 11:04:40,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:40,744 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] [2022-11-16 11:04:40,745 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:40,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1289670013, now seen corresponding path program 1 times [2022-11-16 11:04:40,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:40,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614339114] [2022-11-16 11:04:40,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:40,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-16 11:04:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-16 11:04:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:04:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:04:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:04:41,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:04:41,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:04:41,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:41,932 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 11:04:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614339114] [2022-11-16 11:04:41,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614339114] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:41,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:41,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:04:41,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386675729] [2022-11-16 11:04:41,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:04:41,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:41,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:04:41,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:04:41,990 INFO L87 Difference]: Start difference. First operand has 545 states, 429 states have (on average 1.6993006993006994) internal successors, (729), 450 states have internal predecessors, (729), 91 states have call successors, (91), 23 states have call predecessors, (91), 23 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) 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, (14), 5 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 11:04:49,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:49,484 INFO L93 Difference]: Finished difference Result 1313 states and 2243 transitions. [2022-11-16 11:04:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:04:49,488 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, (14), 5 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 104 [2022-11-16 11:04:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:49,550 INFO L225 Difference]: With dead ends: 1313 [2022-11-16 11:04:49,551 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:04:49,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:04:49,573 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1402 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 3233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:49,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1710 Invalid, 3233 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [384 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 11:04:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:04:49,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:04:49,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6950354609929077) internal successors, (717), 442 states have internal predecessors, (717), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:04:49,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 894 transitions. [2022-11-16 11:04:49,876 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 894 transitions. Word has length 104 [2022-11-16 11:04:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:49,876 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 894 transitions. [2022-11-16 11:04:49,878 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, (14), 5 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 11:04:49,878 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 894 transitions. [2022-11-16 11:04:49,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-16 11:04:49,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:49,888 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 11:04:49,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:04:49,888 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:49,889 INFO L85 PathProgramCache]: Analyzing trace with hash 851010391, now seen corresponding path program 1 times [2022-11-16 11:04:49,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:49,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763819444] [2022-11-16 11:04:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-16 11:04:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:04:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:04:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:04:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:04:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:04:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:50,582 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 11:04:50,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:50,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763819444] [2022-11-16 11:04:50,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763819444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:50,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:50,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:04:50,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465410179] [2022-11-16 11:04:50,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:50,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:04:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:04:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:04:50,586 INFO L87 Difference]: Start difference. First operand 537 states and 894 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, (14), 5 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 11:04:57,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:04:57,176 INFO L93 Difference]: Finished difference Result 1299 states and 2205 transitions. [2022-11-16 11:04:57,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:04:57,177 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, (14), 5 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 107 [2022-11-16 11:04:57,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:04:57,185 INFO L225 Difference]: With dead ends: 1299 [2022-11-16 11:04:57,185 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:04:57,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 11:04:57,190 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1826 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2802 mSolverCounterSat, 519 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 3321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 519 IncrementalHoareTripleChecker+Valid, 2802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-16 11:04:57,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 1639 Invalid, 3321 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [519 Valid, 2802 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-11-16 11:04:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:04:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:04:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6926713947990544) internal successors, (716), 442 states have internal predecessors, (716), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:04:57,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2022-11-16 11:04:57,376 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 107 [2022-11-16 11:04:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:04:57,378 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2022-11-16 11:04:57,378 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, (14), 5 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 11:04:57,378 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2022-11-16 11:04:57,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-16 11:04:57,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:04:57,388 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 11:04:57,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:04:57,389 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:04:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:04:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1290038099, now seen corresponding path program 1 times [2022-11-16 11:04:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:04:57,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937311073] [2022-11-16 11:04:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:04:57,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:04:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:04:57,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:57,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-16 11:04:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-16 11:04:57,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:57,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:57,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:57,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:04:57,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:04:58,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:58,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:04:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:04:58,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:04:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:04:58,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:04:58,035 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 11:04:58,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:04:58,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937311073] [2022-11-16 11:04:58,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937311073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:04:58,036 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:04:58,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:04:58,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320625629] [2022-11-16 11:04:58,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:04:58,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:04:58,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:04:58,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:04:58,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:04:58,040 INFO L87 Difference]: Start difference. First operand 537 states and 893 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, (14), 5 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 11:05:05,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:05,362 INFO L93 Difference]: Finished difference Result 1299 states and 2204 transitions. [2022-11-16 11:05:05,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:05:05,363 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, (14), 5 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 108 [2022-11-16 11:05:05,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:05,370 INFO L225 Difference]: With dead ends: 1299 [2022-11-16 11:05:05,370 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:05,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 11:05:05,375 INFO L413 NwaCegarLoop]: 446 mSDtfsCounter, 952 mSDsluCounter, 1293 mSDsCounter, 0 mSdLazyCounter, 3056 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 3293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 3056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:05,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 1739 Invalid, 3293 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 3056 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-16 11:05:05,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:05,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:05,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.690307328605201) internal successors, (715), 442 states have internal predecessors, (715), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 892 transitions. [2022-11-16 11:05:05,538 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 892 transitions. Word has length 108 [2022-11-16 11:05:05,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:05,539 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 892 transitions. [2022-11-16 11:05:05,539 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, (14), 5 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 11:05:05,539 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 892 transitions. [2022-11-16 11:05:05,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-16 11:05:05,546 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:05,546 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 11:05:05,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:05:05,547 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:05,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:05,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1222954669, now seen corresponding path program 1 times [2022-11-16 11:05:05,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:05,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902977813] [2022-11-16 11:05:05,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:05,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:05,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:05,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:05,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 11:05:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-16 11:05:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:06,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:06,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:06,156 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 11:05:06,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:06,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902977813] [2022-11-16 11:05:06,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902977813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:06,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:06,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:06,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798169373] [2022-11-16 11:05:06,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:06,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:06,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:06,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:06,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:06,159 INFO L87 Difference]: Start difference. First operand 537 states and 892 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, (14), 5 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 11:05:12,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:12,448 INFO L93 Difference]: Finished difference Result 1299 states and 2203 transitions. [2022-11-16 11:05:12,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:05:12,449 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, (14), 5 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 109 [2022-11-16 11:05:12,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:12,454 INFO L225 Difference]: With dead ends: 1299 [2022-11-16 11:05:12,455 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:12,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 11:05:12,459 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1816 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 520 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 3316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 520 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:12,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 1643 Invalid, 3316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [520 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-11-16 11:05:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:12,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:12,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6879432624113475) internal successors, (714), 442 states have internal predecessors, (714), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 891 transitions. [2022-11-16 11:05:12,583 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 891 transitions. Word has length 109 [2022-11-16 11:05:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:12,583 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 891 transitions. [2022-11-16 11:05:12,583 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, (14), 5 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 11:05:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 891 transitions. [2022-11-16 11:05:12,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-16 11:05:12,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:12,588 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 11:05:12,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:05:12,588 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash -759301681, now seen corresponding path program 1 times [2022-11-16 11:05:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:12,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527098932] [2022-11-16 11:05:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:12,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:12,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:12,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:12,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-16 11:05:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-16 11:05:13,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:13,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:13,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:13,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:13,103 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 11:05:13,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:13,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527098932] [2022-11-16 11:05:13,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527098932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:13,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:13,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:13,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681083553] [2022-11-16 11:05:13,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:13,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:13,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:13,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:13,108 INFO L87 Difference]: Start difference. First operand 537 states and 891 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, (14), 5 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 11:05:19,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:19,533 INFO L93 Difference]: Finished difference Result 1299 states and 2202 transitions. [2022-11-16 11:05:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:05:19,534 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, (14), 5 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 110 [2022-11-16 11:05:19,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:19,539 INFO L225 Difference]: With dead ends: 1299 [2022-11-16 11:05:19,540 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:19,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 11:05:19,543 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 1807 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 3313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1648 Invalid, 3313 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [517 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-16 11:05:19,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:19,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6855791962174942) internal successors, (713), 442 states have internal predecessors, (713), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:19,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 890 transitions. [2022-11-16 11:05:19,687 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 890 transitions. Word has length 110 [2022-11-16 11:05:19,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:19,688 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 890 transitions. [2022-11-16 11:05:19,688 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, (14), 5 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 11:05:19,688 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 890 transitions. [2022-11-16 11:05:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-16 11:05:19,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:19,692 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 11:05:19,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:05:19,692 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:19,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:19,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1786056527, now seen corresponding path program 1 times [2022-11-16 11:05:19,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:19,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942450746] [2022-11-16 11:05:19,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:19,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:19,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-16 11:05:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:20,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:20,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:20,298 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 11:05:20,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:20,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942450746] [2022-11-16 11:05:20,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942450746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:20,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:20,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:20,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609252126] [2022-11-16 11:05:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:20,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:20,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:20,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:20,301 INFO L87 Difference]: Start difference. First operand 537 states and 890 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, (14), 5 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 11:05:26,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:26,344 INFO L93 Difference]: Finished difference Result 1259 states and 2126 transitions. [2022-11-16 11:05:26,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:26,345 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, (14), 5 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 111 [2022-11-16 11:05:26,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:26,350 INFO L225 Difference]: With dead ends: 1259 [2022-11-16 11:05:26,351 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:26,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 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 11:05:26,355 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 1920 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 2702 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1992 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 3230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:26,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1992 Valid, 1628 Invalid, 3230 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [528 Valid, 2702 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-16 11:05:26,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:26,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.673758865248227) internal successors, (708), 442 states have internal predecessors, (708), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 885 transitions. [2022-11-16 11:05:26,506 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 885 transitions. Word has length 111 [2022-11-16 11:05:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:26,506 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 885 transitions. [2022-11-16 11:05:26,506 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, (14), 5 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 11:05:26,507 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 885 transitions. [2022-11-16 11:05:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-16 11:05:26,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:26,511 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 11:05:26,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:05:26,511 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:26,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1641699311, now seen corresponding path program 1 times [2022-11-16 11:05:26,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:26,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546096976] [2022-11-16 11:05:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:26,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:26,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-16 11:05:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:27,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:27,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:27,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:27,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:27,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:27,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:27,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:27,077 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 11:05:27,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:27,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546096976] [2022-11-16 11:05:27,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546096976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:27,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:27,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936333360] [2022-11-16 11:05:27,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:27,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:27,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:27,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:27,080 INFO L87 Difference]: Start difference. First operand 537 states and 885 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, (14), 5 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 11:05:33,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:33,868 INFO L93 Difference]: Finished difference Result 1259 states and 2121 transitions. [2022-11-16 11:05:33,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:33,868 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, (14), 5 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 112 [2022-11-16 11:05:33,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:33,873 INFO L225 Difference]: With dead ends: 1259 [2022-11-16 11:05:33,874 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 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 11:05:33,877 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1044 mSDsluCounter, 1292 mSDsCounter, 0 mSdLazyCounter, 2941 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 3183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 2941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:33,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1737 Invalid, 3183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 2941 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-11-16 11:05:33,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6619385342789599) internal successors, (703), 442 states have internal predecessors, (703), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:34,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 880 transitions. [2022-11-16 11:05:34,048 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 880 transitions. Word has length 112 [2022-11-16 11:05:34,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:34,049 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 880 transitions. [2022-11-16 11:05:34,049 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, (14), 5 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 11:05:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 880 transitions. [2022-11-16 11:05:34,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-16 11:05:34,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:34,053 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 11:05:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:05:34,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 153845204, now seen corresponding path program 1 times [2022-11-16 11:05:34,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:34,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496827933] [2022-11-16 11:05:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:34,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-16 11:05:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:34,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:34,603 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 11:05:34,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:34,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496827933] [2022-11-16 11:05:34,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496827933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:34,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:34,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:34,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710986433] [2022-11-16 11:05:34,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:34,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:34,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:34,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:34,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:34,606 INFO L87 Difference]: Start difference. First operand 537 states and 880 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, (14), 5 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 11:05:40,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:40,547 INFO L93 Difference]: Finished difference Result 1259 states and 2116 transitions. [2022-11-16 11:05:40,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:40,548 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, (14), 5 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 113 [2022-11-16 11:05:40,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:40,552 INFO L225 Difference]: With dead ends: 1259 [2022-11-16 11:05:40,552 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:40,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 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 11:05:40,555 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1892 mSDsluCounter, 1190 mSDsCounter, 0 mSdLazyCounter, 2669 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1642 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:40,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 1642 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2669 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-16 11:05:40,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6501182033096926) internal successors, (698), 442 states have internal predecessors, (698), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 875 transitions. [2022-11-16 11:05:40,692 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 875 transitions. Word has length 113 [2022-11-16 11:05:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:40,693 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 875 transitions. [2022-11-16 11:05:40,693 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, (14), 5 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 11:05:40,693 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 875 transitions. [2022-11-16 11:05:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:05:40,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:40,697 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 11:05:40,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:05:40,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 662943414, now seen corresponding path program 1 times [2022-11-16 11:05:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:40,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199736375] [2022-11-16 11:05:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:40,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:40,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:05:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:41,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:41,222 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 11:05:41,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:41,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199736375] [2022-11-16 11:05:41,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199736375] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:41,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:41,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152672656] [2022-11-16 11:05:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:41,225 INFO L87 Difference]: Start difference. First operand 537 states and 875 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, (14), 5 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 11:05:47,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:47,131 INFO L93 Difference]: Finished difference Result 1259 states and 2111 transitions. [2022-11-16 11:05:47,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:05:47,131 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, (14), 5 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 114 [2022-11-16 11:05:47,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:47,136 INFO L225 Difference]: With dead ends: 1259 [2022-11-16 11:05:47,136 INFO L226 Difference]: Without dead ends: 780 [2022-11-16 11:05:47,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 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 11:05:47,139 INFO L413 NwaCegarLoop]: 448 mSDtfsCounter, 1909 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 530 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1981 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 530 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:47,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1981 Valid, 1631 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [530 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 11:05:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-16 11:05:47,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 537. [2022-11-16 11:05:47,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 423 states have (on average 1.6382978723404256) internal successors, (693), 442 states have internal predecessors, (693), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:47,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 870 transitions. [2022-11-16 11:05:47,334 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 870 transitions. Word has length 114 [2022-11-16 11:05:47,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:47,334 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 870 transitions. [2022-11-16 11:05:47,335 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, (14), 5 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 11:05:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 870 transitions. [2022-11-16 11:05:47,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-16 11:05:47,339 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:47,339 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 11:05:47,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:05:47,340 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:47,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:47,340 INFO L85 PathProgramCache]: Analyzing trace with hash 936457175, now seen corresponding path program 1 times [2022-11-16 11:05:47,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:47,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311693555] [2022-11-16 11:05:47,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:47,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:47,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-16 11:05:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:47,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:47,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:47,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:47,938 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 11:05:47,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:47,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311693555] [2022-11-16 11:05:47,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311693555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:47,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:47,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:47,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885329980] [2022-11-16 11:05:47,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:47,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:47,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:47,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:47,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:47,941 INFO L87 Difference]: Start difference. First operand 537 states and 870 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:05:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:05:55,016 INFO L93 Difference]: Finished difference Result 1274 states and 2126 transitions. [2022-11-16 11:05:55,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:05:55,017 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 114 [2022-11-16 11:05:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:05:55,021 INFO L225 Difference]: With dead ends: 1274 [2022-11-16 11:05:55,022 INFO L226 Difference]: Without dead ends: 801 [2022-11-16 11:05:55,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-11-16 11:05:55,025 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 1009 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:05:55,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 1728 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 2912 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:05:55,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-11-16 11:05:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 539. [2022-11-16 11:05:55,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 425 states have (on average 1.6352941176470588) internal successors, (695), 444 states have internal predecessors, (695), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:05:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 872 transitions. [2022-11-16 11:05:55,193 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 872 transitions. Word has length 114 [2022-11-16 11:05:55,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:05:55,194 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 872 transitions. [2022-11-16 11:05:55,194 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:05:55,194 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 872 transitions. [2022-11-16 11:05:55,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 11:05:55,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:05:55,198 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 11:05:55,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:05:55,198 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:05:55,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:05:55,199 INFO L85 PathProgramCache]: Analyzing trace with hash -53088167, now seen corresponding path program 1 times [2022-11-16 11:05:55,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:05:55,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914250934] [2022-11-16 11:05:55,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:05:55,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:05:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:05:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:05:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:05:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:05:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:05:55,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:05:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:05:55,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:05:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:05:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:05:55,720 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 11:05:55,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:05:55,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914250934] [2022-11-16 11:05:55,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914250934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:05:55,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:05:55,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:05:55,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934083596] [2022-11-16 11:05:55,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:05:55,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:05:55,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:05:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:05:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:05:55,723 INFO L87 Difference]: Start difference. First operand 539 states and 872 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, (14), 5 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 11:06:01,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:01,577 INFO L93 Difference]: Finished difference Result 1265 states and 2112 transitions. [2022-11-16 11:06:01,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:06:01,578 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, (14), 5 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 115 [2022-11-16 11:06:01,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:01,583 INFO L225 Difference]: With dead ends: 1265 [2022-11-16 11:06:01,583 INFO L226 Difference]: Without dead ends: 784 [2022-11-16 11:06:01,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 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 11:06:01,585 INFO L413 NwaCegarLoop]: 452 mSDtfsCounter, 1890 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2629 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1962 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 2629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:01,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1962 Valid, 1643 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 2629 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-16 11:06:01,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-16 11:06:01,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 539. [2022-11-16 11:06:01,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 425 states have (on average 1.6235294117647059) internal successors, (690), 444 states have internal predecessors, (690), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:06:01,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 867 transitions. [2022-11-16 11:06:01,721 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 867 transitions. Word has length 115 [2022-11-16 11:06:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:01,722 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 867 transitions. [2022-11-16 11:06:01,722 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, (14), 5 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 11:06:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 867 transitions. [2022-11-16 11:06:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-16 11:06:01,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:01,726 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 11:06:01,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:06:01,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:01,727 INFO L85 PathProgramCache]: Analyzing trace with hash 2140462550, now seen corresponding path program 1 times [2022-11-16 11:06:01,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:01,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025222724] [2022-11-16 11:06:01,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:01,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-16 11:06:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:02,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:02,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:02,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:02,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:02,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:02,261 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 11:06:02,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:02,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025222724] [2022-11-16 11:06:02,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025222724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:02,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:02,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:06:02,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297699498] [2022-11-16 11:06:02,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:02,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:06:02,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:02,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:06:02,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:06:02,263 INFO L87 Difference]: Start difference. First operand 539 states and 867 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:08,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:08,691 INFO L93 Difference]: Finished difference Result 1278 states and 2123 transitions. [2022-11-16 11:06:08,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:06:08,691 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 115 [2022-11-16 11:06:08,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:08,695 INFO L225 Difference]: With dead ends: 1278 [2022-11-16 11:06:08,695 INFO L226 Difference]: Without dead ends: 805 [2022-11-16 11:06:08,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 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 11:06:08,697 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1467 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2675 mSolverCounterSat, 385 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1539 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 3060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:08,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1539 Valid, 1681 Invalid, 3060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2675 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-11-16 11:06:08,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-11-16 11:06:08,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 542. [2022-11-16 11:06:08,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 428 states have (on average 1.6191588785046729) internal successors, (693), 447 states have internal predecessors, (693), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:06:08,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 870 transitions. [2022-11-16 11:06:08,836 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 870 transitions. Word has length 115 [2022-11-16 11:06:08,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:08,837 INFO L495 AbstractCegarLoop]: Abstraction has 542 states and 870 transitions. [2022-11-16 11:06:08,837 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:08,837 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 870 transitions. [2022-11-16 11:06:08,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 11:06:08,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:08,841 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 11:06:08,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:06:08,841 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -93437605, now seen corresponding path program 1 times [2022-11-16 11:06:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:08,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540587365] [2022-11-16 11:06:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:08,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:06:09,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:09,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:09,407 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 11:06:09,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:09,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540587365] [2022-11-16 11:06:09,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540587365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:09,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:09,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 11:06:09,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338113121] [2022-11-16 11:06:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:09,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 11:06:09,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 11:06:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-16 11:06:09,410 INFO L87 Difference]: Start difference. First operand 542 states and 870 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, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:06:17,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:17,720 INFO L93 Difference]: Finished difference Result 1282 states and 2129 transitions. [2022-11-16 11:06:17,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 11:06:17,721 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, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 116 [2022-11-16 11:06:17,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:17,727 INFO L225 Difference]: With dead ends: 1282 [2022-11-16 11:06:17,727 INFO L226 Difference]: Without dead ends: 812 [2022-11-16 11:06:17,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 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 11:06:17,731 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 1453 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 5192 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 5192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:17,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 3019 Invalid, 5579 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [387 Valid, 5192 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-16 11:06:17,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2022-11-16 11:06:17,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 553. [2022-11-16 11:06:17,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 436 states have (on average 1.614678899082569) internal successors, (704), 457 states have internal predecessors, (704), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-11-16 11:06:17,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 885 transitions. [2022-11-16 11:06:17,943 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 885 transitions. Word has length 116 [2022-11-16 11:06:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 885 transitions. [2022-11-16 11:06:17,945 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, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-16 11:06:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 885 transitions. [2022-11-16 11:06:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 11:06:17,951 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:17,951 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 11:06:17,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:06:17,951 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:17,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:17,952 INFO L85 PathProgramCache]: Analyzing trace with hash -941320388, now seen corresponding path program 1 times [2022-11-16 11:06:17,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:17,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259674856] [2022-11-16 11:06:17,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:17,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:18,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:06:18,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:18,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:18,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:18,480 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 11:06:18,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:18,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259674856] [2022-11-16 11:06:18,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259674856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:18,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:18,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:06:18,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542643897] [2022-11-16 11:06:18,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:18,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:06:18,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:18,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:06:18,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:06:18,483 INFO L87 Difference]: Start difference. First operand 553 states and 885 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:25,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:25,678 INFO L93 Difference]: Finished difference Result 1305 states and 2160 transitions. [2022-11-16 11:06:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:06:25,679 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 116 [2022-11-16 11:06:25,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:25,684 INFO L225 Difference]: With dead ends: 1305 [2022-11-16 11:06:25,685 INFO L226 Difference]: Without dead ends: 829 [2022-11-16 11:06:25,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 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 11:06:25,688 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1006 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 2873 mSolverCounterSat, 237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1078 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 3110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 2873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:25,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1078 Valid, 1769 Invalid, 3110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [237 Valid, 2873 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:06:25,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2022-11-16 11:06:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 557. [2022-11-16 11:06:25,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 440 states have (on average 1.606818181818182) internal successors, (707), 461 states have internal predecessors, (707), 92 states have call successors, (92), 23 states have call predecessors, (92), 24 states have return successors, (89), 85 states have call predecessors, (89), 87 states have call successors, (89) [2022-11-16 11:06:25,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 888 transitions. [2022-11-16 11:06:25,901 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 888 transitions. Word has length 116 [2022-11-16 11:06:25,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:25,901 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 888 transitions. [2022-11-16 11:06:25,902 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:25,902 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 888 transitions. [2022-11-16 11:06:25,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-16 11:06:25,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:25,905 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 11:06:25,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:06:25,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:25,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:25,906 INFO L85 PathProgramCache]: Analyzing trace with hash 422082844, now seen corresponding path program 1 times [2022-11-16 11:06:25,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:25,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60166826] [2022-11-16 11:06:25,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:25,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-16 11:06:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:26,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:26,370 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 11:06:26,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:26,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60166826] [2022-11-16 11:06:26,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60166826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:26,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:26,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:06:26,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753424515] [2022-11-16 11:06:26,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:26,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:06:26,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:26,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:06:26,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:06:26,373 INFO L87 Difference]: Start difference. First operand 557 states and 888 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, (14), 5 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 11:06:33,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:33,236 INFO L93 Difference]: Finished difference Result 1347 states and 2203 transitions. [2022-11-16 11:06:33,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:06:33,237 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, (14), 5 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 116 [2022-11-16 11:06:33,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:33,241 INFO L225 Difference]: With dead ends: 1347 [2022-11-16 11:06:33,241 INFO L226 Difference]: Without dead ends: 788 [2022-11-16 11:06:33,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 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 11:06:33,244 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 919 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 1773 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:33,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [991 Valid, 1773 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 2897 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 11:06:33,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-16 11:06:33,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 538. [2022-11-16 11:06:33,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 424 states have (on average 1.615566037735849) internal successors, (685), 443 states have internal predecessors, (685), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:06:33,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 862 transitions. [2022-11-16 11:06:33,450 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 862 transitions. Word has length 116 [2022-11-16 11:06:33,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:33,450 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 862 transitions. [2022-11-16 11:06:33,450 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, (14), 5 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 11:06:33,451 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 862 transitions. [2022-11-16 11:06:33,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-16 11:06:33,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:33,454 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, 1] [2022-11-16 11:06:33,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:06:33,454 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:33,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:33,455 INFO L85 PathProgramCache]: Analyzing trace with hash 556412443, now seen corresponding path program 1 times [2022-11-16 11:06:33,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:33,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321914583] [2022-11-16 11:06:33,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-16 11:06:33,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:33,979 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 11:06:33,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:33,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321914583] [2022-11-16 11:06:33,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321914583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:33,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:33,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:06:33,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098197416] [2022-11-16 11:06:33,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:33,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:06:33,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:33,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:06:33,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:06:33,984 INFO L87 Difference]: Start difference. First operand 538 states and 862 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:40,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:40,835 INFO L93 Difference]: Finished difference Result 1282 states and 2118 transitions. [2022-11-16 11:06:40,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:06:40,836 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-11-16 11:06:40,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:40,841 INFO L225 Difference]: With dead ends: 1282 [2022-11-16 11:06:40,841 INFO L226 Difference]: Without dead ends: 809 [2022-11-16 11:06:40,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 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 11:06:40,844 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1399 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 3152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:40,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1712 Invalid, 3152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [379 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-16 11:06:40,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-11-16 11:06:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 543. [2022-11-16 11:06:41,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 429 states have (on average 1.6083916083916083) internal successors, (690), 448 states have internal predecessors, (690), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:06:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 867 transitions. [2022-11-16 11:06:41,018 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 867 transitions. Word has length 117 [2022-11-16 11:06:41,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:41,018 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 867 transitions. [2022-11-16 11:06:41,018 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, (14), 5 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-16 11:06:41,019 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 867 transitions. [2022-11-16 11:06:41,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:06:41,022 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:41,022 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, 1, 1] [2022-11-16 11:06:41,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:06:41,022 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:41,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:41,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1360459153, now seen corresponding path program 1 times [2022-11-16 11:06:41,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:41,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933508527] [2022-11-16 11:06:41,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:41,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:41,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:41,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:41,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:41,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:41,496 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 11:06:41,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:41,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933508527] [2022-11-16 11:06:41,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933508527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:41,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:41,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:06:41,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39045562] [2022-11-16 11:06:41,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:41,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:06:41,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:41,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:06:41,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:06:41,500 INFO L87 Difference]: Start difference. First operand 543 states and 867 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 5 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 11:06:48,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:06:48,366 INFO L93 Difference]: Finished difference Result 1280 states and 2113 transitions. [2022-11-16 11:06:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 11:06:48,367 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 5 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 118 [2022-11-16 11:06:48,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:06:48,372 INFO L225 Difference]: With dead ends: 1280 [2022-11-16 11:06:48,372 INFO L226 Difference]: Without dead ends: 786 [2022-11-16 11:06:48,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:06:48,375 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 966 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 2819 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1038 SdHoareTripleChecker+Valid, 1766 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:06:48,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1038 Valid, 1766 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2819 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 11:06:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-16 11:06:48,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 543. [2022-11-16 11:06:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 429 states have (on average 1.599067599067599) internal successors, (686), 448 states have internal predecessors, (686), 91 states have call successors, (91), 23 states have call predecessors, (91), 22 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2022-11-16 11:06:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 863 transitions. [2022-11-16 11:06:48,557 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 863 transitions. Word has length 118 [2022-11-16 11:06:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:06:48,557 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 863 transitions. [2022-11-16 11:06:48,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (14), 5 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 11:06:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 863 transitions. [2022-11-16 11:06:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-16 11:06:48,560 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:06:48,560 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, 1, 1] [2022-11-16 11:06:48,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:06:48,561 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:06:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:06:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -365765455, now seen corresponding path program 1 times [2022-11-16 11:06:48,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:06:48,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601630298] [2022-11-16 11:06:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:06:48,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:06:48,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:06:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:06:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:48,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:06:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:49,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:49,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-16 11:06:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-16 11:06:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:06:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-16 11:06:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-16 11:06:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-16 11:06:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:06:49,331 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 11:06:49,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:06:49,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601630298] [2022-11-16 11:06:49,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601630298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:06:49,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:06:49,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:06:49,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401192276] [2022-11-16 11:06:49,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:06:49,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:06:49,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:06:49,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:06:49,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:06:49,334 INFO L87 Difference]: Start difference. First operand 543 states and 863 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:07:04,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:04,187 INFO L93 Difference]: Finished difference Result 1493 states and 2593 transitions. [2022-11-16 11:07:04,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 11:07:04,188 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 118 [2022-11-16 11:07:04,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:04,194 INFO L225 Difference]: With dead ends: 1493 [2022-11-16 11:07:04,195 INFO L226 Difference]: Without dead ends: 1028 [2022-11-16 11:07:04,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2022-11-16 11:07:04,199 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 3043 mSDsluCounter, 3065 mSDsCounter, 0 mSdLazyCounter, 10103 mSolverCounterSat, 1506 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3573 SdHoareTripleChecker+Invalid, 11609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1506 IncrementalHoareTripleChecker+Valid, 10103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:04,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3573 Invalid, 11609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1506 Valid, 10103 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-11-16 11:07:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2022-11-16 11:07:04,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 552. [2022-11-16 11:07:04,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 436 states have (on average 1.5894495412844036) internal successors, (693), 454 states have internal predecessors, (693), 91 states have call successors, (91), 23 states have call predecessors, (91), 24 states have return successors, (105), 87 states have call predecessors, (105), 86 states have call successors, (105) [2022-11-16 11:07:04,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 889 transitions. [2022-11-16 11:07:04,419 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 889 transitions. Word has length 118 [2022-11-16 11:07:04,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:04,420 INFO L495 AbstractCegarLoop]: Abstraction has 552 states and 889 transitions. [2022-11-16 11:07:04,420 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:07:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 889 transitions. [2022-11-16 11:07:04,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:07:04,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:04,424 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] [2022-11-16 11:07:04,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 11:07:04,424 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:04,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:04,425 INFO L85 PathProgramCache]: Analyzing trace with hash 1709795483, now seen corresponding path program 1 times [2022-11-16 11:07:04,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:04,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896136042] [2022-11-16 11:07:04,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:04,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:04,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:07:04,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:04,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:05,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:07:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:05,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-16 11:07:05,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-16 11:07:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-16 11:07:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:05,216 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 11:07:05,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:05,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896136042] [2022-11-16 11:07:05,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896136042] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:05,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:07:05,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-16 11:07:05,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713384714] [2022-11-16 11:07:05,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:05,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 11:07:05,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:05,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 11:07:05,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-11-16 11:07:05,219 INFO L87 Difference]: Start difference. First operand 552 states and 889 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:07:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:34,633 INFO L93 Difference]: Finished difference Result 2410 states and 4362 transitions. [2022-11-16 11:07:34,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 11:07:34,633 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) Word has length 120 [2022-11-16 11:07:34,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:34,650 INFO L225 Difference]: With dead ends: 2410 [2022-11-16 11:07:34,651 INFO L226 Difference]: Without dead ends: 1936 [2022-11-16 11:07:34,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 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 11:07:34,656 INFO L413 NwaCegarLoop]: 1122 mSDtfsCounter, 5549 mSDsluCounter, 7332 mSDsCounter, 0 mSdLazyCounter, 20226 mSolverCounterSat, 2720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5549 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 22946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2720 IncrementalHoareTripleChecker+Valid, 20226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:34,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5549 Valid, 8454 Invalid, 22946 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2720 Valid, 20226 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2022-11-16 11:07:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2022-11-16 11:07:35,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1298. [2022-11-16 11:07:35,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1298 states, 956 states have (on average 1.604602510460251) internal successors, (1534), 1013 states have internal predecessors, (1534), 287 states have call successors, (287), 42 states have call predecessors, (287), 54 states have return successors, (392), 290 states have call predecessors, (392), 282 states have call successors, (392) [2022-11-16 11:07:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1298 states to 1298 states and 2213 transitions. [2022-11-16 11:07:35,236 INFO L78 Accepts]: Start accepts. Automaton has 1298 states and 2213 transitions. Word has length 120 [2022-11-16 11:07:35,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:35,237 INFO L495 AbstractCegarLoop]: Abstraction has 1298 states and 2213 transitions. [2022-11-16 11:07:35,237 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, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 7 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-16 11:07:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1298 states and 2213 transitions. [2022-11-16 11:07:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-16 11:07:35,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:35,243 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, 1, 1] [2022-11-16 11:07:35,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 11:07:35,243 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:35,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:35,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1848923998, now seen corresponding path program 1 times [2022-11-16 11:07:35,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:35,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784357289] [2022-11-16 11:07:35,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:35,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:07:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:07:35,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:07:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:07:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:07:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:35,948 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 11:07:35,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784357289] [2022-11-16 11:07:35,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784357289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:35,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685524788] [2022-11-16 11:07:35,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:35,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:35,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:35,953 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:35,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:07:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:36,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1460 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:36,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:36,359 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 11:07:36,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:36,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685524788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:36,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:36,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:07:36,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071155196] [2022-11-16 11:07:36,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:36,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:36,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:36,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:36,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:07:36,362 INFO L87 Difference]: Start difference. First operand 1298 states and 2213 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 11:07:37,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:37,850 INFO L93 Difference]: Finished difference Result 3713 states and 6493 transitions. [2022-11-16 11:07:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:37,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 119 [2022-11-16 11:07:37,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:37,869 INFO L225 Difference]: With dead ends: 3713 [2022-11-16 11:07:37,869 INFO L226 Difference]: Without dead ends: 2501 [2022-11-16 11:07:37,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 144 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 11:07:37,877 INFO L413 NwaCegarLoop]: 1021 mSDtfsCounter, 835 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:37,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 1788 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:07:37,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2501 states. [2022-11-16 11:07:39,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2501 to 2499. [2022-11-16 11:07:39,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2499 states, 1833 states have (on average 1.6219312602291325) internal successors, (2973), 1941 states have internal predecessors, (2973), 562 states have call successors, (562), 78 states have call predecessors, (562), 103 states have return successors, (825), 575 states have call predecessors, (825), 557 states have call successors, (825) [2022-11-16 11:07:39,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2499 states to 2499 states and 4360 transitions. [2022-11-16 11:07:39,366 INFO L78 Accepts]: Start accepts. Automaton has 2499 states and 4360 transitions. Word has length 119 [2022-11-16 11:07:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:39,366 INFO L495 AbstractCegarLoop]: Abstraction has 2499 states and 4360 transitions. [2022-11-16 11:07:39,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 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 11:07:39,366 INFO L276 IsEmpty]: Start isEmpty. Operand 2499 states and 4360 transitions. [2022-11-16 11:07:39,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-16 11:07:39,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:39,370 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, 1, 1, 1] [2022-11-16 11:07:39,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:07:39,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:39,571 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:39,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:39,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1481941856, now seen corresponding path program 1 times [2022-11-16 11:07:39,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:39,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841227109] [2022-11-16 11:07:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:39,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:39,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:39,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:07:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:40,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:40,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:07:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:40,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:07:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:07:40,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:07:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,308 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 11:07:40,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841227109] [2022-11-16 11:07:40,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841227109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:40,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078171608] [2022-11-16 11:07:40,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:40,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:40,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:40,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:40,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:07:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:40,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1462 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:40,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:40,695 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 11:07:40,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:40,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078171608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:40,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:40,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:07:40,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628053148] [2022-11-16 11:07:40,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:40,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:40,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:40,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:40,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:07:40,698 INFO L87 Difference]: Start difference. First operand 2499 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 11:07:43,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:43,035 INFO L93 Difference]: Finished difference Result 7318 states and 13039 transitions. [2022-11-16 11:07:43,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:43,036 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 120 [2022-11-16 11:07:43,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:43,083 INFO L225 Difference]: With dead ends: 7318 [2022-11-16 11:07:43,083 INFO L226 Difference]: Without dead ends: 4905 [2022-11-16 11:07:43,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 145 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 11:07:43,098 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 834 mSDsluCounter, 770 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:43,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 1742 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:07:43,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4905 states. [2022-11-16 11:07:45,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4905 to 4902. [2022-11-16 11:07:45,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 3588 states have (on average 1.6301560758082496) internal successors, (5849), 3798 states have internal predecessors, (5849), 1112 states have call successors, (1112), 150 states have call predecessors, (1112), 201 states have return successors, (1769), 1145 states have call predecessors, (1769), 1107 states have call successors, (1769) [2022-11-16 11:07:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 8730 transitions. [2022-11-16 11:07:45,356 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 8730 transitions. Word has length 120 [2022-11-16 11:07:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:45,357 INFO L495 AbstractCegarLoop]: Abstraction has 4902 states and 8730 transitions. [2022-11-16 11:07:45,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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 11:07:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 8730 transitions. [2022-11-16 11:07:45,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-16 11:07:45,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:45,362 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, 1, 1, 1, 1] [2022-11-16 11:07:45,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:45,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:45,564 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:45,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:45,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1304566048, now seen corresponding path program 1 times [2022-11-16 11:07:45,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:45,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524643845] [2022-11-16 11:07:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:45,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:45,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:45,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:07:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:07:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:46,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:07:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:07:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:07:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,309 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 11:07:46,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524643845] [2022-11-16 11:07:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524643845] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361664999] [2022-11-16 11:07:46,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:46,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:46,319 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:46,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:07:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:46,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:46,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:46,715 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 11:07:46,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:46,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361664999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:46,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:46,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:07:46,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119683226] [2022-11-16 11:07:46,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:46,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:46,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:46,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:46,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:07:46,718 INFO L87 Difference]: Start difference. First operand 4902 states and 8730 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, (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 11:07:51,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:07:51,313 INFO L93 Difference]: Finished difference Result 14529 states and 26500 transitions. [2022-11-16 11:07:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:07:51,314 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, (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 121 [2022-11-16 11:07:51,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:07:51,389 INFO L225 Difference]: With dead ends: 14529 [2022-11-16 11:07:51,389 INFO L226 Difference]: Without dead ends: 9713 [2022-11-16 11:07:51,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 146 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 11:07:51,420 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 833 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:07:51,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 1750 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:07:51,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9713 states. [2022-11-16 11:07:56,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9713 to 9709. [2022-11-16 11:07:56,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9709 states, 7099 states have (on average 1.633328637836315) internal successors, (11595), 7513 states have internal predecessors, (11595), 2212 states have call successors, (2212), 294 states have call predecessors, (2212), 397 states have return successors, (3909), 2285 states have call predecessors, (3909), 2207 states have call successors, (3909) [2022-11-16 11:07:56,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9709 states to 9709 states and 17716 transitions. [2022-11-16 11:07:56,384 INFO L78 Accepts]: Start accepts. Automaton has 9709 states and 17716 transitions. Word has length 121 [2022-11-16 11:07:56,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:07:56,384 INFO L495 AbstractCegarLoop]: Abstraction has 9709 states and 17716 transitions. [2022-11-16 11:07:56,385 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, (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 11:07:56,385 INFO L276 IsEmpty]: Start isEmpty. Operand 9709 states and 17716 transitions. [2022-11-16 11:07:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-16 11:07:56,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:07:56,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:07:56,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:07:56,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-16 11:07:56,591 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:07:56,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:07:56,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1546990074, now seen corresponding path program 1 times [2022-11-16 11:07:56,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:07:56,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341660607] [2022-11-16 11:07:56,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:56,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:07:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:56,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:07:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:56,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:56,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:56,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:07:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:07:57,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:57,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:07:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:07:57,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:57,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:07:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-16 11:07:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 11:07:57,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-16 11:07:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-16 11:07:57,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:07:57,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341660607] [2022-11-16 11:07:57,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341660607] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:07:57,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716107350] [2022-11-16 11:07:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:07:57,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:07:57,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:07:57,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:07:57,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:07:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:07:57,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:07:57,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:07:57,618 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 11:07:57,618 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:07:57,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716107350] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:07:57,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:07:57,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:07:57,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304537966] [2022-11-16 11:07:57,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:07:57,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:07:57,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:07:57,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:07:57,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:07:57,621 INFO L87 Difference]: Start difference. First operand 9709 states and 17716 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 11:08:06,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:06,289 INFO L93 Difference]: Finished difference Result 28952 states and 54733 transitions. [2022-11-16 11:08:06,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:06,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 124 [2022-11-16 11:08:06,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:06,465 INFO L225 Difference]: With dead ends: 28952 [2022-11-16 11:08:06,465 INFO L226 Difference]: Without dead ends: 19329 [2022-11-16 11:08:06,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:08:06,536 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 832 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:06,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1781 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19329 states. [2022-11-16 11:08:16,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19329 to 19324. [2022-11-16 11:08:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19324 states, 14122 states have (on average 1.6338337345984988) internal successors, (23073), 14944 states have internal predecessors, (23073), 4412 states have call successors, (4412), 582 states have call predecessors, (4412), 789 states have return successors, (9077), 4565 states have call predecessors, (9077), 4407 states have call successors, (9077) [2022-11-16 11:08:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19324 states to 19324 states and 36562 transitions. [2022-11-16 11:08:16,576 INFO L78 Accepts]: Start accepts. Automaton has 19324 states and 36562 transitions. Word has length 124 [2022-11-16 11:08:16,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 11:08:16,577 INFO L495 AbstractCegarLoop]: Abstraction has 19324 states and 36562 transitions. [2022-11-16 11:08:16,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 11:08:16,577 INFO L276 IsEmpty]: Start isEmpty. Operand 19324 states and 36562 transitions. [2022-11-16 11:08:16,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-16 11:08:16,587 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 11:08:16,588 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, 1, 1, 1, 1, 1, 1] [2022-11-16 11:08:16,602 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:08:16,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-16 11:08:16,797 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 11:08:16,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:08:16,797 INFO L85 PathProgramCache]: Analyzing trace with hash 438660706, now seen corresponding path program 1 times [2022-11-16 11:08:16,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:08:16,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042081651] [2022-11-16 11:08:16,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:16,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:08:16,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:16,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-16 11:08:17,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 11:08:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 11:08:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-16 11:08:17,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 11:08:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 11:08:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-16 11:08:17,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-16 11:08:17,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-16 11:08:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,430 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 11:08:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:08:17,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042081651] [2022-11-16 11:08:17,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042081651] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:08:17,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628954033] [2022-11-16 11:08:17,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:08:17,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:08:17,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:08:17,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:08:17,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92e7a15c-4c8e-4a9e-a87c-01bf72a9e58c/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:08:17,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:08:17,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-16 11:08:17,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:08:17,798 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 11:08:17,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:08:17,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628954033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:08:17,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:08:17,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-11-16 11:08:17,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570307436] [2022-11-16 11:08:17,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:08:17,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:08:17,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:08:17,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:08:17,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-16 11:08:17,801 INFO L87 Difference]: Start difference. First operand 19324 states and 36562 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 11:08:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 11:08:34,567 INFO L93 Difference]: Finished difference Result 57799 states and 116121 transitions. [2022-11-16 11:08:34,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:08:34,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 123 [2022-11-16 11:08:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 11:08:34,940 INFO L225 Difference]: With dead ends: 57799 [2022-11-16 11:08:34,940 INFO L226 Difference]: Without dead ends: 38549 [2022-11-16 11:08:35,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 148 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 11:08:35,283 INFO L413 NwaCegarLoop]: 1026 mSDtfsCounter, 830 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 11:08:35,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1805 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 11:08:35,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38549 states.