./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro --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 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a --- 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-8393723 [2022-11-18 20:57:28,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:57:28,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:57:28,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:57:28,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:57:28,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:57:28,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:57:28,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:57:28,874 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:57:28,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:57:28,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:57:28,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:57:28,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:57:28,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:57:28,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:57:28,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:57:28,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:57:28,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:57:28,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:57:28,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:57:28,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:57:28,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:57:28,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:57:28,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:57:28,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:57:28,924 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:57:28,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:57:28,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:57:28,928 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:57:28,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:57:28,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:57:28,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:57:28,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:57:28,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:57:28,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:57:28,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:57:28,943 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:57:28,943 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:57:28,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:57:28,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:57:28,945 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:57:28,947 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:57:29,001 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:57:29,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:57:29,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:57:29,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:57:29,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:57:29,009 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:57:29,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:57:29,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:57:29,010 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:57:29,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:57:29,012 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:57:29,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:57:29,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:57:29,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:57:29,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:57:29,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:57:29,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:57:29,014 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:57:29,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:57:29,015 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:57:29,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:57:29,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:57:29,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:57:29,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:57:29,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:57:29,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:57:29,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:57:29,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:57:29,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:57:29,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:57:29,018 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:57:29,018 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:57:29,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:57:29,019 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_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4246354e79d66df81a26382f92e3cfb9fdaf25fcf22b56dfc59f3e4dbd0d435a [2022-11-18 20:57:29,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:57:29,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:57:29,477 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:57:29,478 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:57:29,481 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:57:29,483 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2022-11-18 20:57:29,584 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/data/c86bc227e/8e1df4d45a9c496b8f617a8e951e10b7/FLAGb1ad950b2 [2022-11-18 20:57:30,344 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:57:30,345 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c [2022-11-18 20:57:30,367 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/data/c86bc227e/8e1df4d45a9c496b8f617a8e951e10b7/FLAGb1ad950b2 [2022-11-18 20:57:30,550 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/data/c86bc227e/8e1df4d45a9c496b8f617a8e951e10b7 [2022-11-18 20:57:30,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:57:30,555 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:57:30,558 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:57:30,558 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:57:30,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:57:30,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:30" (1/1) ... [2022-11-18 20:57:30,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b3180f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:30, skipping insertion in model container [2022-11-18 20:57:30,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:57:30" (1/1) ... [2022-11-18 20:57:30,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:57:30,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:57:31,293 WARN L234 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_5ea03370-504b-4c21-b02f-0a35252f0a3e/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2022-11-18 20:57:31,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:57:31,542 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:57:31,671 WARN L234 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_5ea03370-504b-4c21-b02f-0a35252f0a3e/sv-benchmarks/c/product-lines/elevator_spec2_product28.cil.c[35981,35994] [2022-11-18 20:57:31,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:57:31,861 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:57:31,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31 WrapperNode [2022-11-18 20:57:31,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:57:31,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:57:31,864 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:57:31,864 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:57:31,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:31,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:31,992 INFO L138 Inliner]: procedures = 97, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1178 [2022-11-18 20:57:31,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:57:31,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:57:31,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:57:31,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:57:32,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,131 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:57:32,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:57:32,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:57:32,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:57:32,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (1/1) ... [2022-11-18 20:57:32,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:57:32,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:57:32,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:57:32,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:57:32,312 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-18 20:57:32,312 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-18 20:57:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-18 20:57:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-18 20:57:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-18 20:57:32,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-18 20:57:32,313 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 20:57:32,314 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 20:57:32,314 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-18 20:57:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-18 20:57:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-18 20:57:32,315 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-18 20:57:32,315 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-18 20:57:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-18 20:57:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-18 20:57:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-18 20:57:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-18 20:57:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-18 20:57:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:57:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-18 20:57:32,334 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-18 20:57:32,334 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-18 20:57:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-18 20:57:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-18 20:57:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-18 20:57:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 20:57:32,335 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 20:57:32,335 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-18 20:57:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-18 20:57:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-18 20:57:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-18 20:57:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-18 20:57:32,336 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-18 20:57:32,336 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-18 20:57:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-18 20:57:32,337 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-18 20:57:32,337 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-11-18 20:57:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-18 20:57:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-18 20:57:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-18 20:57:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-18 20:57:32,338 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-18 20:57:32,338 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-18 20:57:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-18 20:57:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-18 20:57:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:57:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-18 20:57:32,339 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-18 20:57:32,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:57:32,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:57:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-18 20:57:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-18 20:57:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-18 20:57:32,341 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-18 20:57:32,640 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:57:32,643 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:57:34,351 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:57:34,378 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:57:34,378 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 20:57:34,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:34 BoogieIcfgContainer [2022-11-18 20:57:34,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:57:34,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:57:34,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:57:34,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:57:34,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:57:30" (1/3) ... [2022-11-18 20:57:34,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6973b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:34, skipping insertion in model container [2022-11-18 20:57:34,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:57:31" (2/3) ... [2022-11-18 20:57:34,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d6973b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:57:34, skipping insertion in model container [2022-11-18 20:57:34,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:57:34" (3/3) ... [2022-11-18 20:57:34,398 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c [2022-11-18 20:57:34,424 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:57:34,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:57:34,514 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:57:34,523 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;@197439ea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:57:34,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:57:34,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) [2022-11-18 20:57:34,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-18 20:57:34,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:34,552 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:34,553 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:34,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:34,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1274281264, now seen corresponding path program 1 times [2022-11-18 20:57:34,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:34,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911945323] [2022-11-18 20:57:34,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:34,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:57:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 20:57:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 20:57:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:35,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:57:35,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:35,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:36,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:36,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911945323] [2022-11-18 20:57:36,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911945323] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:36,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:36,009 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:57:36,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99369027] [2022-11-18 20:57:36,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:36,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:36,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:36,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:36,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:36,078 INFO L87 Difference]: Start difference. First operand has 578 states, 452 states have (on average 1.6880530973451326) internal successors, (763), 475 states have internal predecessors, (763), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 92 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:57:44,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:44,880 INFO L93 Difference]: Finished difference Result 1299 states and 2191 transitions. [2022-11-18 20:57:44,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:57:44,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-11-18 20:57:44,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:44,920 INFO L225 Difference]: With dead ends: 1299 [2022-11-18 20:57:44,920 INFO L226 Difference]: Without dead ends: 733 [2022-11-18 20:57:44,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:57:44,938 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1163 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 2973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:44,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1224 Invalid, 2973 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [279 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-18 20:57:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-18 20:57:45,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-18 20:57:45,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6838565022421526) internal successors, (751), 467 states have internal predecessors, (751), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:57:45,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 944 transitions. [2022-11-18 20:57:45,260 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 944 transitions. Word has length 60 [2022-11-18 20:57:45,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:45,261 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 944 transitions. [2022-11-18 20:57:45,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:57:45,262 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 944 transitions. [2022-11-18 20:57:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:57:45,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:45,267 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:45,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:57:45,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash -577179706, now seen corresponding path program 1 times [2022-11-18 20:57:45,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:45,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930245083] [2022-11-18 20:57:45,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:45,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:57:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:45,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:57:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 20:57:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:45,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:45,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:57:45,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:45,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:45,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:45,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930245083] [2022-11-18 20:57:45,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930245083] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:45,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:45,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:57:45,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432255563] [2022-11-18 20:57:45,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:45,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:45,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:45,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:45,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:45,943 INFO L87 Difference]: Start difference. First operand 570 states and 944 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:57:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:53,941 INFO L93 Difference]: Finished difference Result 1285 states and 2157 transitions. [2022-11-18 20:57:53,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:57:53,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-11-18 20:57:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:53,961 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:57:53,961 INFO L226 Difference]: Without dead ends: 733 [2022-11-18 20:57:53,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:57:53,974 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1155 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2696 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:53,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 1211 Invalid, 2971 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 2696 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:57:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-18 20:57:54,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-18 20:57:54,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6816143497757847) internal successors, (750), 467 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:57:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 943 transitions. [2022-11-18 20:57:54,160 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 943 transitions. Word has length 63 [2022-11-18 20:57:54,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:54,162 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 943 transitions. [2022-11-18 20:57:54,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:57:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 943 transitions. [2022-11-18 20:57:54,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-18 20:57:54,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:54,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:57:54,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash 766305152, now seen corresponding path program 1 times [2022-11-18 20:57:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:54,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591274058] [2022-11-18 20:57:54,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:54,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:54,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:57:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:57:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:57:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:57:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:54,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:57:54,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:54,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591274058] [2022-11-18 20:57:54,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591274058] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:54,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:54,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:57:54,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954296347] [2022-11-18 20:57:54,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:54,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:54,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:54,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:54,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:54,906 INFO L87 Difference]: Start difference. First operand 570 states and 943 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:03,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:03,591 INFO L93 Difference]: Finished difference Result 1285 states and 2156 transitions. [2022-11-18 20:58:03,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:58:03,592 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-11-18 20:58:03,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:03,599 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:58:03,600 INFO L226 Difference]: Without dead ends: 733 [2022-11-18 20:58:03,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:03,615 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 706 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2872 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1191 SdHoareTripleChecker+Invalid, 3001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 1191 Invalid, 3001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2872 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-11-18 20:58:03,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-18 20:58:03,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-18 20:58:03,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6793721973094171) internal successors, (749), 467 states have internal predecessors, (749), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:58:03,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 942 transitions. [2022-11-18 20:58:03,756 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 942 transitions. Word has length 64 [2022-11-18 20:58:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:03,757 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 942 transitions. [2022-11-18 20:58:03,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:03,757 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 942 transitions. [2022-11-18 20:58:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:58:03,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:03,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:03,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:58:03,771 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:03,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1497497726, now seen corresponding path program 1 times [2022-11-18 20:58:03,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:03,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302130048] [2022-11-18 20:58:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:03,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:58:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 20:58:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:04,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:04,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:04,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302130048] [2022-11-18 20:58:04,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302130048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:04,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:04,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:04,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211812936] [2022-11-18 20:58:04,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:04,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:04,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:04,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:04,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:04,414 INFO L87 Difference]: Start difference. First operand 570 states and 942 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:12,590 INFO L93 Difference]: Finished difference Result 1285 states and 2155 transitions. [2022-11-18 20:58:12,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:58:12,591 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 20:58:12,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:12,598 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:58:12,598 INFO L226 Difference]: Without dead ends: 733 [2022-11-18 20:58:12,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:12,603 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 702 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2874 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 2874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:12,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1221 Invalid, 2999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [125 Valid, 2874 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-18 20:58:12,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-18 20:58:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-18 20:58:12,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6771300448430493) internal successors, (748), 467 states have internal predecessors, (748), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:58:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 941 transitions. [2022-11-18 20:58:12,740 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 941 transitions. Word has length 65 [2022-11-18 20:58:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:12,741 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 941 transitions. [2022-11-18 20:58:12,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:12,741 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 941 transitions. [2022-11-18 20:58:12,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:58:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:12,743 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:12,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:58:12,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:12,745 INFO L85 PathProgramCache]: Analyzing trace with hash 376896572, now seen corresponding path program 1 times [2022-11-18 20:58:12,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:12,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267893499] [2022-11-18 20:58:12,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:12,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:12,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:58:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:58:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:13,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:13,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:13,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:13,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267893499] [2022-11-18 20:58:13,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267893499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:13,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:13,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:13,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474012039] [2022-11-18 20:58:13,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:13,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:13,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:13,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:13,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:13,365 INFO L87 Difference]: Start difference. First operand 570 states and 941 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:21,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:21,054 INFO L93 Difference]: Finished difference Result 1285 states and 2154 transitions. [2022-11-18 20:58:21,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:58:21,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 20:58:21,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:21,066 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:58:21,066 INFO L226 Difference]: Without dead ends: 733 [2022-11-18 20:58:21,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:21,071 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 1147 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1196 SdHoareTripleChecker+Invalid, 2965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:21,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1196 Invalid, 2965 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [279 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:58:21,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-18 20:58:21,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 570. [2022-11-18 20:58:21,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 446 states have (on average 1.6748878923766817) internal successors, (747), 467 states have internal predecessors, (747), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:58:21,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 940 transitions. [2022-11-18 20:58:21,259 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 940 transitions. Word has length 66 [2022-11-18 20:58:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:21,260 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 940 transitions. [2022-11-18 20:58:21,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:21,260 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 940 transitions. [2022-11-18 20:58:21,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:58:21,262 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:21,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:21,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:58:21,263 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:21,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1686384446, now seen corresponding path program 1 times [2022-11-18 20:58:21,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:21,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342875795] [2022-11-18 20:58:21,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:21,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:21,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:21,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:21,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:58:21,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:58:22,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:22,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:22,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342875795] [2022-11-18 20:58:22,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342875795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:22,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:22,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:58:22,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415746823] [2022-11-18 20:58:22,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:22,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:58:22,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:22,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:58:22,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:58:22,111 INFO L87 Difference]: Start difference. First operand 570 states and 940 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:58:32,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:32,247 INFO L93 Difference]: Finished difference Result 1262 states and 2104 transitions. [2022-11-18 20:58:32,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:58:32,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-11-18 20:58:32,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:32,255 INFO L225 Difference]: With dead ends: 1262 [2022-11-18 20:58:32,255 INFO L226 Difference]: Without dead ends: 759 [2022-11-18 20:58:32,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:58:32,261 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 810 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 5237 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 5369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 5237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:32,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 2116 Invalid, 5369 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 5237 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-11-18 20:58:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2022-11-18 20:58:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 583. [2022-11-18 20:58:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6710526315789473) internal successors, (762), 479 states have internal predecessors, (762), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:58:32,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 959 transitions. [2022-11-18 20:58:32,424 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 959 transitions. Word has length 67 [2022-11-18 20:58:32,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:32,425 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 959 transitions. [2022-11-18 20:58:32,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:58:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 959 transitions. [2022-11-18 20:58:32,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:58:32,428 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:32,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:32,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:58:32,429 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:32,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:32,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1445844317, now seen corresponding path program 1 times [2022-11-18 20:58:32,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:32,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838411255] [2022-11-18 20:58:32,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:32,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:32,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:32,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:32,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:58:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 20:58:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:33,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:33,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838411255] [2022-11-18 20:58:33,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838411255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:33,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:33,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:33,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276870176] [2022-11-18 20:58:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:33,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:33,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:33,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:33,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:33,078 INFO L87 Difference]: Start difference. First operand 583 states and 959 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:40,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:40,513 INFO L93 Difference]: Finished difference Result 1276 states and 2127 transitions. [2022-11-18 20:58:40,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:40,515 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-11-18 20:58:40,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:40,521 INFO L225 Difference]: With dead ends: 1276 [2022-11-18 20:58:40,522 INFO L226 Difference]: Without dead ends: 755 [2022-11-18 20:58:40,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:40,526 INFO L413 NwaCegarLoop]: 363 mSDtfsCounter, 1241 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2606 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1326 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 2888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:40,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1326 Valid, 1178 Invalid, 2888 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [282 Valid, 2606 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 20:58:40,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-18 20:58:40,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-18 20:58:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6600877192982457) internal successors, (757), 479 states have internal predecessors, (757), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:58:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 954 transitions. [2022-11-18 20:58:40,693 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 954 transitions. Word has length 67 [2022-11-18 20:58:40,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:40,693 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 954 transitions. [2022-11-18 20:58:40,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:40,694 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 954 transitions. [2022-11-18 20:58:40,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-18 20:58:40,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:40,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:40,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:58:40,697 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:40,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:40,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1491983771, now seen corresponding path program 1 times [2022-11-18 20:58:40,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:40,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7270546] [2022-11-18 20:58:40,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:40,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:40,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:40,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:58:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:58:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:41,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:41,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:41,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:41,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:41,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7270546] [2022-11-18 20:58:41,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7270546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:41,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:41,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:41,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958054819] [2022-11-18 20:58:41,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:41,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:41,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:41,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:41,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:41,299 INFO L87 Difference]: Start difference. First operand 583 states and 954 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:48,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:48,670 INFO L93 Difference]: Finished difference Result 1276 states and 2122 transitions. [2022-11-18 20:58:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:48,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-11-18 20:58:48,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:48,678 INFO L225 Difference]: With dead ends: 1276 [2022-11-18 20:58:48,678 INFO L226 Difference]: Without dead ends: 755 [2022-11-18 20:58:48,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:48,682 INFO L413 NwaCegarLoop]: 370 mSDtfsCounter, 1230 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 2595 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1199 SdHoareTripleChecker+Invalid, 2871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 2595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:48,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1199 Invalid, 2871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [276 Valid, 2595 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:58:48,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-18 20:58:48,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-18 20:58:48,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6491228070175439) internal successors, (752), 479 states have internal predecessors, (752), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:58:48,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 949 transitions. [2022-11-18 20:58:48,885 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 949 transitions. Word has length 68 [2022-11-18 20:58:48,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:48,886 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 949 transitions. [2022-11-18 20:58:48,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:48,886 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 949 transitions. [2022-11-18 20:58:48,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:58:48,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:48,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:58:48,890 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:48,891 INFO L85 PathProgramCache]: Analyzing trace with hash 678823650, now seen corresponding path program 1 times [2022-11-18 20:58:48,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891450860] [2022-11-18 20:58:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:48,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:58:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:58:49,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:49,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:49,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891450860] [2022-11-18 20:58:49,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891450860] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:49,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:49,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:49,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468116675] [2022-11-18 20:58:49,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:49,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:49,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:49,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:49,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:49,481 INFO L87 Difference]: Start difference. First operand 583 states and 949 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:57,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:57,132 INFO L93 Difference]: Finished difference Result 1276 states and 2117 transitions. [2022-11-18 20:58:57,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:58:57,133 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-11-18 20:58:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:57,139 INFO L225 Difference]: With dead ends: 1276 [2022-11-18 20:58:57,140 INFO L226 Difference]: Without dead ends: 755 [2022-11-18 20:58:57,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:58:57,143 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 784 mSDsluCounter, 821 mSDsCounter, 0 mSdLazyCounter, 2748 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:57,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [869 Valid, 1182 Invalid, 2881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [133 Valid, 2748 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 20:58:57,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-18 20:58:57,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-18 20:58:57,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.638157894736842) internal successors, (747), 479 states have internal predecessors, (747), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:58:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 944 transitions. [2022-11-18 20:58:57,341 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 944 transitions. Word has length 69 [2022-11-18 20:58:57,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:57,342 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 944 transitions. [2022-11-18 20:58:57,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:58:57,342 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 944 transitions. [2022-11-18 20:58:57,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:58:57,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:57,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:57,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:58:57,344 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:57,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:57,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1867098464, now seen corresponding path program 1 times [2022-11-18 20:58:57,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:57,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670138656] [2022-11-18 20:58:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:57,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:57,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:58:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:57,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:58:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:58:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:57,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:58:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:57,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:58:57,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:57,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670138656] [2022-11-18 20:58:57,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670138656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:57,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:57,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:58:57,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371496540] [2022-11-18 20:58:57,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:57,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:58:57,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:57,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:58:57,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:58:57,979 INFO L87 Difference]: Start difference. First operand 583 states and 944 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:08,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:08,575 INFO L93 Difference]: Finished difference Result 1268 states and 2094 transitions. [2022-11-18 20:59:08,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:59:08,576 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-11-18 20:59:08,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:08,582 INFO L225 Difference]: With dead ends: 1268 [2022-11-18 20:59:08,582 INFO L226 Difference]: Without dead ends: 762 [2022-11-18 20:59:08,584 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:59:08,585 INFO L413 NwaCegarLoop]: 361 mSDtfsCounter, 776 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 5140 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2100 SdHoareTripleChecker+Invalid, 5275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 5140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:08,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 2100 Invalid, 5275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [135 Valid, 5140 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-18 20:59:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-18 20:59:08,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 583. [2022-11-18 20:59:08,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.6359649122807018) internal successors, (746), 479 states have internal predecessors, (746), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:59:08,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 943 transitions. [2022-11-18 20:59:08,758 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 943 transitions. Word has length 70 [2022-11-18 20:59:08,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:08,758 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 943 transitions. [2022-11-18 20:59:08,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:08,759 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 943 transitions. [2022-11-18 20:59:08,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-11-18 20:59:08,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:08,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:08,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:59:08,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:08,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:08,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1002819520, now seen corresponding path program 1 times [2022-11-18 20:59:08,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:08,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655637736] [2022-11-18 20:59:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:08,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:59:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:09,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:09,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:09,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:09,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:09,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655637736] [2022-11-18 20:59:09,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655637736] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:09,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:09,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:59:09,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756996211] [2022-11-18 20:59:09,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:09,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:09,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:09,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:09,366 INFO L87 Difference]: Start difference. First operand 583 states and 943 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:16,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:16,699 INFO L93 Difference]: Finished difference Result 1276 states and 2109 transitions. [2022-11-18 20:59:16,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:16,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-11-18 20:59:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:16,705 INFO L225 Difference]: With dead ends: 1276 [2022-11-18 20:59:16,705 INFO L226 Difference]: Without dead ends: 755 [2022-11-18 20:59:16,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:16,709 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 1230 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1315 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:16,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1315 Valid, 1180 Invalid, 2843 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [278 Valid, 2565 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:59:16,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-18 20:59:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 583. [2022-11-18 20:59:16,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 456 states have (on average 1.625) internal successors, (741), 479 states have internal predecessors, (741), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:59:16,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 938 transitions. [2022-11-18 20:59:16,879 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 938 transitions. Word has length 70 [2022-11-18 20:59:16,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:16,880 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 938 transitions. [2022-11-18 20:59:16,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:16,880 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 938 transitions. [2022-11-18 20:59:16,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:59:16,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:16,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:16,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:59:16,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:16,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:16,884 INFO L85 PathProgramCache]: Analyzing trace with hash -465333563, now seen corresponding path program 1 times [2022-11-18 20:59:16,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:16,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995510566] [2022-11-18 20:59:16,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:16,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:16,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:59:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:17,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:17,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995510566] [2022-11-18 20:59:17,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995510566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:17,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:17,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:59:17,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522846619] [2022-11-18 20:59:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:17,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:59:17,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:59:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:17,608 INFO L87 Difference]: Start difference. First operand 583 states and 938 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:27,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:27,594 INFO L93 Difference]: Finished difference Result 1289 states and 2119 transitions. [2022-11-18 20:59:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:59:27,595 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-11-18 20:59:27,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:27,600 INFO L225 Difference]: With dead ends: 1289 [2022-11-18 20:59:27,600 INFO L226 Difference]: Without dead ends: 780 [2022-11-18 20:59:27,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:59:27,603 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 1242 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 4881 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1328 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 5172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:27,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1328 Valid, 2076 Invalid, 5172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [291 Valid, 4881 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-18 20:59:27,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-18 20:59:27,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 586. [2022-11-18 20:59:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.618736383442266) internal successors, (743), 482 states have internal predecessors, (743), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:59:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 940 transitions. [2022-11-18 20:59:27,768 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 940 transitions. Word has length 71 [2022-11-18 20:59:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:27,769 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 940 transitions. [2022-11-18 20:59:27,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 940 transitions. [2022-11-18 20:59:27,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-18 20:59:27,771 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:27,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:27,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:59:27,772 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash 457333863, now seen corresponding path program 1 times [2022-11-18 20:59:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040988656] [2022-11-18 20:59:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:27,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:27,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:27,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:27,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:28,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:59:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:28,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:28,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:28,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:28,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:28,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:28,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040988656] [2022-11-18 20:59:28,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040988656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:28,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:28,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:59:28,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014742046] [2022-11-18 20:59:28,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:28,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:28,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:28,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:28,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:28,346 INFO L87 Difference]: Start difference. First operand 586 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:36,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:36,485 INFO L93 Difference]: Finished difference Result 1285 states and 2110 transitions. [2022-11-18 20:59:36,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:36,487 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-11-18 20:59:36,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:36,493 INFO L225 Difference]: With dead ends: 1285 [2022-11-18 20:59:36,493 INFO L226 Difference]: Without dead ends: 761 [2022-11-18 20:59:36,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:36,497 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 780 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1182 SdHoareTripleChecker+Invalid, 2844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:36,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1182 Invalid, 2844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [132 Valid, 2712 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-11-18 20:59:36,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-11-18 20:59:36,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 586. [2022-11-18 20:59:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 459 states have (on average 1.607843137254902) internal successors, (738), 482 states have internal predecessors, (738), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:59:36,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 935 transitions. [2022-11-18 20:59:36,706 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 935 transitions. Word has length 71 [2022-11-18 20:59:36,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:36,706 INFO L495 AbstractCegarLoop]: Abstraction has 586 states and 935 transitions. [2022-11-18 20:59:36,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:36,707 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 935 transitions. [2022-11-18 20:59:36,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:59:36,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:36,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:36,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:59:36,710 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:36,711 INFO L85 PathProgramCache]: Analyzing trace with hash -844649211, now seen corresponding path program 1 times [2022-11-18 20:59:36,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:36,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275131184] [2022-11-18 20:59:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:36,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:59:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:37,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:37,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:37,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:37,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275131184] [2022-11-18 20:59:37,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275131184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:37,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:37,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:59:37,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656632441] [2022-11-18 20:59:37,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:37,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:59:37,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:37,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:59:37,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:37,394 INFO L87 Difference]: Start difference. First operand 586 states and 935 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:47,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:47,733 INFO L93 Difference]: Finished difference Result 1295 states and 2116 transitions. [2022-11-18 20:59:47,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:59:47,734 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-11-18 20:59:47,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:47,738 INFO L225 Difference]: With dead ends: 1295 [2022-11-18 20:59:47,738 INFO L226 Difference]: Without dead ends: 786 [2022-11-18 20:59:47,740 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:59:47,741 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 773 mSDsluCounter, 1735 mSDsCounter, 0 mSdLazyCounter, 5024 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 5161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 5024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:47,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 2093 Invalid, 5161 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 5024 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-18 20:59:47,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2022-11-18 20:59:47,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 590. [2022-11-18 20:59:47,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 463 states have (on average 1.6004319654427646) internal successors, (741), 486 states have internal predecessors, (741), 100 states have call successors, (100), 25 states have call predecessors, (100), 26 states have return successors, (97), 92 states have call predecessors, (97), 95 states have call successors, (97) [2022-11-18 20:59:47,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 938 transitions. [2022-11-18 20:59:47,949 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 938 transitions. Word has length 72 [2022-11-18 20:59:47,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:47,949 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 938 transitions. [2022-11-18 20:59:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:59:47,950 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 938 transitions. [2022-11-18 20:59:47,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:59:47,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:47,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:59:47,954 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:47,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash 528932581, now seen corresponding path program 1 times [2022-11-18 20:59:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:47,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338304138] [2022-11-18 20:59:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 20:59:48,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:48,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:48,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:48,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338304138] [2022-11-18 20:59:48,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338304138] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:48,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:48,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:59:48,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100151124] [2022-11-18 20:59:48,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:48,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:48,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:48,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:48,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:48,524 INFO L87 Difference]: Start difference. First operand 590 states and 938 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:56,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:56,798 INFO L93 Difference]: Finished difference Result 1333 states and 2155 transitions. [2022-11-18 20:59:56,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:59:56,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 20:59:56,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:56,804 INFO L225 Difference]: With dead ends: 1333 [2022-11-18 20:59:56,804 INFO L226 Difference]: Without dead ends: 741 [2022-11-18 20:59:56,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:56,808 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 694 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 2742 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:56,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1176 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [128 Valid, 2742 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-18 20:59:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-11-18 20:59:56,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 571. [2022-11-18 20:59:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 447 states have (on average 1.6085011185682327) internal successors, (719), 468 states have internal predecessors, (719), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 20:59:56,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 912 transitions. [2022-11-18 20:59:56,974 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 912 transitions. Word has length 72 [2022-11-18 20:59:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:56,974 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 912 transitions. [2022-11-18 20:59:56,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:59:56,975 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 912 transitions. [2022-11-18 20:59:56,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:59:56,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:56,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:56,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:59:56,977 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:56,978 INFO L85 PathProgramCache]: Analyzing trace with hash -806899254, now seen corresponding path program 1 times [2022-11-18 20:59:56,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:56,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970963877] [2022-11-18 20:59:56,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:56,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:59:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:59:57,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:59:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:57,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:59:57,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:57,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:59:57,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:57,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970963877] [2022-11-18 20:59:57,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970963877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:57,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:57,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:59:57,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849193332] [2022-11-18 20:59:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:57,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:59:57,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:57,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:59:57,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:57,667 INFO L87 Difference]: Start difference. First operand 571 states and 912 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 21:00:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:07,631 INFO L93 Difference]: Finished difference Result 1268 states and 2070 transitions. [2022-11-18 21:00:07,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:00:07,637 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-11-18 21:00:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:07,642 INFO L225 Difference]: With dead ends: 1268 [2022-11-18 21:00:07,642 INFO L226 Difference]: Without dead ends: 762 [2022-11-18 21:00:07,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:00:07,645 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 747 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 4940 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 5074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 4940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:07,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 2085 Invalid, 5074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [134 Valid, 4940 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-18 21:00:07,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-18 21:00:07,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 576. [2022-11-18 21:00:07,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 452 states have (on average 1.6017699115044248) internal successors, (724), 473 states have internal predecessors, (724), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 91 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-18 21:00:07,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 917 transitions. [2022-11-18 21:00:07,818 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 917 transitions. Word has length 73 [2022-11-18 21:00:07,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:07,818 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 917 transitions. [2022-11-18 21:00:07,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 21:00:07,819 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 917 transitions. [2022-11-18 21:00:07,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 21:00:07,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:07,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:07,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 21:00:07,821 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:07,821 INFO L85 PathProgramCache]: Analyzing trace with hash -688964934, now seen corresponding path program 1 times [2022-11-18 21:00:07,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:07,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449574488] [2022-11-18 21:00:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:07,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:00:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:00:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 21:00:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 21:00:08,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:08,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449574488] [2022-11-18 21:00:08,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449574488] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:08,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:08,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:00:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563013561] [2022-11-18 21:00:08,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:08,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:00:08,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:00:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:00:08,696 INFO L87 Difference]: Start difference. First operand 576 states and 917 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 21:00:26,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:26,128 INFO L93 Difference]: Finished difference Result 2081 states and 3485 transitions. [2022-11-18 21:00:26,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 21:00:26,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-11-18 21:00:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:26,142 INFO L225 Difference]: With dead ends: 2081 [2022-11-18 21:00:26,142 INFO L226 Difference]: Without dead ends: 1583 [2022-11-18 21:00:26,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:00:26,146 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2751 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 5136 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2842 SdHoareTripleChecker+Valid, 1776 SdHoareTripleChecker+Invalid, 5919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 5136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:26,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2842 Valid, 1776 Invalid, 5919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [783 Valid, 5136 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-11-18 21:00:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1583 states. [2022-11-18 21:00:26,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1583 to 1091. [2022-11-18 21:00:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1091 states, 854 states have (on average 1.6346604215456675) internal successors, (1396), 884 states have internal predecessors, (1396), 192 states have call successors, (192), 43 states have call predecessors, (192), 44 states have return successors, (194), 176 states have call predecessors, (194), 187 states have call successors, (194) [2022-11-18 21:00:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1782 transitions. [2022-11-18 21:00:26,468 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1782 transitions. Word has length 74 [2022-11-18 21:00:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:26,469 INFO L495 AbstractCegarLoop]: Abstraction has 1091 states and 1782 transitions. [2022-11-18 21:00:26,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 6 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 21:00:26,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1782 transitions. [2022-11-18 21:00:26,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-18 21:00:26,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:26,477 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, 1, 1] [2022-11-18 21:00:26,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 21:00:26,478 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:26,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:26,478 INFO L85 PathProgramCache]: Analyzing trace with hash -15934398, now seen corresponding path program 1 times [2022-11-18 21:00:26,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:26,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830932104] [2022-11-18 21:00:26,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:26,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:26,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:00:26,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:26,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:00:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:27,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:27,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:27,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:27,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:27,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:00:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:28,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 21:00:28,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 21:00:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:00:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 21:00:28,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:00:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:28,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830932104] [2022-11-18 21:00:28,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830932104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:28,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:28,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-11-18 21:00:28,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230290658] [2022-11-18 21:00:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:28,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 21:00:28,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:28,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 21:00:28,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:00:28,308 INFO L87 Difference]: Start difference. First operand 1091 states and 1782 transitions. Second operand has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 21:01:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:05,741 INFO L93 Difference]: Finished difference Result 3971 states and 6874 transitions. [2022-11-18 21:01:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 21:01:05,742 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) Word has length 126 [2022-11-18 21:01:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:05,769 INFO L225 Difference]: With dead ends: 3971 [2022-11-18 21:01:05,770 INFO L226 Difference]: Without dead ends: 2958 [2022-11-18 21:01:05,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1198 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=827, Invalid=3729, Unknown=0, NotChecked=0, Total=4556 [2022-11-18 21:01:05,781 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 5339 mSDsluCounter, 5654 mSDsCounter, 0 mSdLazyCounter, 18162 mSolverCounterSat, 2880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5339 SdHoareTripleChecker+Valid, 6315 SdHoareTripleChecker+Invalid, 21042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2880 IncrementalHoareTripleChecker+Valid, 18162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:05,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5339 Valid, 6315 Invalid, 21042 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2880 Valid, 18162 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time] [2022-11-18 21:01:05,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2022-11-18 21:01:06,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 1406. [2022-11-18 21:01:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1093 states have (on average 1.5919487648673376) internal successors, (1740), 1119 states have internal predecessors, (1740), 240 states have call successors, (240), 61 states have call predecessors, (240), 72 states have return successors, (313), 236 states have call predecessors, (313), 235 states have call successors, (313) [2022-11-18 21:01:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2293 transitions. [2022-11-18 21:01:06,467 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2293 transitions. Word has length 126 [2022-11-18 21:01:06,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:06,468 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2293 transitions. [2022-11-18 21:01:06,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.578947368421052) internal successors, (87), 12 states have internal predecessors, (87), 5 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 21:01:06,468 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2293 transitions. [2022-11-18 21:01:06,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 21:01:06,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:06,474 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:06,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 21:01:06,474 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:06,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:06,475 INFO L85 PathProgramCache]: Analyzing trace with hash 869484430, now seen corresponding path program 1 times [2022-11-18 21:01:06,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:06,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859896087] [2022-11-18 21:01:06,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:06,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:01:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:06,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:06,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:01:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:01:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:07,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:01:07,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:07,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 21:01:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:01:08,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:08,051 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 21:01:08,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:08,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859896087] [2022-11-18 21:01:08,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859896087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:08,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:08,053 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 21:01:08,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936285952] [2022-11-18 21:01:08,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:08,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:01:08,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:08,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:01:08,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:01:08,056 INFO L87 Difference]: Start difference. First operand 1406 states and 2293 transitions. Second operand has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:02:02,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:02,658 INFO L93 Difference]: Finished difference Result 7227 states and 12993 transitions. [2022-11-18 21:02:02,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-11-18 21:02:02,659 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 128 [2022-11-18 21:02:02,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:02,714 INFO L225 Difference]: With dead ends: 7227 [2022-11-18 21:02:02,714 INFO L226 Difference]: Without dead ends: 5899 [2022-11-18 21:02:02,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1642 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=760, Invalid=4496, Unknown=0, NotChecked=0, Total=5256 [2022-11-18 21:02:02,738 INFO L413 NwaCegarLoop]: 1250 mSDtfsCounter, 7140 mSDsluCounter, 8852 mSDsCounter, 0 mSdLazyCounter, 27686 mSolverCounterSat, 3699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7152 SdHoareTripleChecker+Valid, 10102 SdHoareTripleChecker+Invalid, 31385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3699 IncrementalHoareTripleChecker+Valid, 27686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:02,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7152 Valid, 10102 Invalid, 31385 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3699 Valid, 27686 Invalid, 0 Unknown, 0 Unchecked, 39.9s Time] [2022-11-18 21:02:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5899 states. [2022-11-18 21:02:04,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5899 to 3336. [2022-11-18 21:02:04,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3336 states, 2500 states have (on average 1.5884) internal successors, (3971), 2580 states have internal predecessors, (3971), 670 states have call successors, (670), 118 states have call predecessors, (670), 165 states have return successors, (1036), 680 states have call predecessors, (1036), 665 states have call successors, (1036) [2022-11-18 21:02:04,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 5677 transitions. [2022-11-18 21:02:04,226 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 5677 transitions. Word has length 128 [2022-11-18 21:02:04,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:04,227 INFO L495 AbstractCegarLoop]: Abstraction has 3336 states and 5677 transitions. [2022-11-18 21:02:04,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.5) internal successors, (88), 9 states have internal predecessors, (88), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:02:04,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 5677 transitions. [2022-11-18 21:02:04,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-18 21:02:04,242 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:04,242 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, 1, 1, 1, 1] [2022-11-18 21:02:04,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 21:02:04,243 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:04,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:04,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1169298699, now seen corresponding path program 1 times [2022-11-18 21:02:04,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:04,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295914049] [2022-11-18 21:02:04,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:04,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:04,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:02:04,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:04,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:04,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:04,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:02:04,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:02:04,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 21:02:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 21:02:05,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:02:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 21:02:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 21:02:05,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:05,545 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 21:02:05,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:05,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295914049] [2022-11-18 21:02:05,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295914049] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:05,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966817472] [2022-11-18 21:02:05,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:05,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:05,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:05,554 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:05,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 21:02:06,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:06,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 21:02:06,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-18 21:02:06,442 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:06,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966817472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:06,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:06,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [13] total 19 [2022-11-18 21:02:06,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918911857] [2022-11-18 21:02:06,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:06,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:02:06,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:06,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:02:06,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:02:06,446 INFO L87 Difference]: Start difference. First operand 3336 states and 5677 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:02:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:13,424 INFO L93 Difference]: Finished difference Result 8558 states and 14702 transitions. [2022-11-18 21:02:13,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:02:13,425 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 127 [2022-11-18 21:02:13,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:13,473 INFO L225 Difference]: With dead ends: 8558 [2022-11-18 21:02:13,474 INFO L226 Difference]: Without dead ends: 5180 [2022-11-18 21:02:13,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=109, Invalid=703, Unknown=0, NotChecked=0, Total=812 [2022-11-18 21:02:13,501 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1698 mSDsluCounter, 1637 mSDsCounter, 0 mSdLazyCounter, 5219 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 5554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 5219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:13,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1781 Valid, 2080 Invalid, 5554 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [335 Valid, 5219 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-18 21:02:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5180 states. [2022-11-18 21:02:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5180 to 4959. [2022-11-18 21:02:15,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4959 states, 3742 states have (on average 1.5836451095670765) internal successors, (5926), 3836 states have internal predecessors, (5926), 970 states have call successors, (970), 170 states have call predecessors, (970), 246 states have return successors, (1540), 995 states have call predecessors, (1540), 965 states have call successors, (1540) [2022-11-18 21:02:15,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4959 states to 4959 states and 8436 transitions. [2022-11-18 21:02:15,524 INFO L78 Accepts]: Start accepts. Automaton has 4959 states and 8436 transitions. Word has length 127 [2022-11-18 21:02:15,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:15,525 INFO L495 AbstractCegarLoop]: Abstraction has 4959 states and 8436 transitions. [2022-11-18 21:02:15,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 5 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:02:15,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4959 states and 8436 transitions. [2022-11-18 21:02:15,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-11-18 21:02:15,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:15,542 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, 1, 1, 1, 1, 1] [2022-11-18 21:02:15,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 21:02:15,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:15,754 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:15,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:15,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1641972810, now seen corresponding path program 1 times [2022-11-18 21:02:15,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:15,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901867839] [2022-11-18 21:02:15,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:15,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:02:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:02:16,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:02:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:16,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:02:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:17,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:17,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 21:02:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:02:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:17,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 21:02:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 21:02:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 21:02:17,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901867839] [2022-11-18 21:02:17,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901867839] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:02:17,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265465158] [2022-11-18 21:02:17,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:17,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:17,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:02:17,374 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:02:17,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 21:02:17,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:17,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 1705 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:02:17,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:02:18,087 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:02:18,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:02:18,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265465158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:18,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:02:18,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [17] total 20 [2022-11-18 21:02:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316434931] [2022-11-18 21:02:18,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:18,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:02:18,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:02:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:02:18,097 INFO L87 Difference]: Start difference. First operand 4959 states and 8436 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 21:02:21,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:21,150 INFO L93 Difference]: Finished difference Result 9914 states and 17272 transitions. [2022-11-18 21:02:21,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:02:21,151 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-11-18 21:02:21,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:21,191 INFO L225 Difference]: With dead ends: 9914 [2022-11-18 21:02:21,191 INFO L226 Difference]: Without dead ends: 5041 [2022-11-18 21:02:21,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2022-11-18 21:02:21,239 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 847 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:21,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 2268 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:02:21,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2022-11-18 21:02:22,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 2188. [2022-11-18 21:02:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2188 states, 1692 states have (on average 1.589243498817967) internal successors, (2689), 1732 states have internal predecessors, (2689), 374 states have call successors, (374), 93 states have call predecessors, (374), 121 states have return successors, (508), 373 states have call predecessors, (508), 369 states have call successors, (508) [2022-11-18 21:02:22,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2188 states to 2188 states and 3571 transitions. [2022-11-18 21:02:22,406 INFO L78 Accepts]: Start accepts. Automaton has 2188 states and 3571 transitions. Word has length 128 [2022-11-18 21:02:22,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:22,407 INFO L495 AbstractCegarLoop]: Abstraction has 2188 states and 3571 transitions. [2022-11-18 21:02:22,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 21:02:22,407 INFO L276 IsEmpty]: Start isEmpty. Operand 2188 states and 3571 transitions. [2022-11-18 21:02:22,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-18 21:02:22,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:22,414 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:22,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 21:02:22,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:02:22,624 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:22,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:22,625 INFO L85 PathProgramCache]: Analyzing trace with hash 677248839, now seen corresponding path program 1 times [2022-11-18 21:02:22,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:22,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346565537] [2022-11-18 21:02:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:22,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:02:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:22,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:02:22,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:02:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:23,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:02:23,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:23,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:24,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 21:02:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:24,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 21:02:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 21:02:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-18 21:02:24,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:24,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346565537] [2022-11-18 21:02:24,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346565537] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:24,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:24,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-18 21:02:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674478921] [2022-11-18 21:02:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 21:02:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 21:02:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:02:24,215 INFO L87 Difference]: Start difference. First operand 2188 states and 3571 transitions. Second operand has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:03:07,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:07,263 INFO L93 Difference]: Finished difference Result 8589 states and 15121 transitions. [2022-11-18 21:03:07,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-18 21:03:07,268 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-11-18 21:03:07,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:07,342 INFO L225 Difference]: With dead ends: 8589 [2022-11-18 21:03:07,342 INFO L226 Difference]: Without dead ends: 6479 [2022-11-18 21:03:07,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=396, Invalid=1766, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 21:03:07,369 INFO L413 NwaCegarLoop]: 1043 mSDtfsCounter, 6621 mSDsluCounter, 6837 mSDsCounter, 0 mSdLazyCounter, 20797 mSolverCounterSat, 3388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6621 SdHoareTripleChecker+Valid, 7880 SdHoareTripleChecker+Invalid, 24185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3388 IncrementalHoareTripleChecker+Valid, 20797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:07,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6621 Valid, 7880 Invalid, 24185 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3388 Valid, 20797 Invalid, 0 Unknown, 0 Unchecked, 31.6s Time] [2022-11-18 21:03:07,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2022-11-18 21:03:10,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 5079. [2022-11-18 21:03:10,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5079 states, 3838 states have (on average 1.5846795205836373) internal successors, (6082), 3944 states have internal predecessors, (6082), 970 states have call successors, (970), 182 states have call predecessors, (970), 270 states have return successors, (1524), 995 states have call predecessors, (1524), 965 states have call successors, (1524) [2022-11-18 21:03:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5079 states to 5079 states and 8576 transitions. [2022-11-18 21:03:10,347 INFO L78 Accepts]: Start accepts. Automaton has 5079 states and 8576 transitions. Word has length 131 [2022-11-18 21:03:10,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:10,348 INFO L495 AbstractCegarLoop]: Abstraction has 5079 states and 8576 transitions. [2022-11-18 21:03:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.625) internal successors, (90), 9 states have internal predecessors, (90), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-18 21:03:10,349 INFO L276 IsEmpty]: Start isEmpty. Operand 5079 states and 8576 transitions. [2022-11-18 21:03:10,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 21:03:10,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:10,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:10,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 21:03:10,363 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 595592522, now seen corresponding path program 1 times [2022-11-18 21:03:10,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273568874] [2022-11-18 21:03:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:10,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:10,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:03:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:10,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:03:10,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:03:10,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:03:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 21:03:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 21:03:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 21:03:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 21:03:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:11,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 21:03:11,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:11,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273568874] [2022-11-18 21:03:11,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273568874] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:03:11,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711553498] [2022-11-18 21:03:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:11,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:03:11,659 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:03:11,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 21:03:12,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:12,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 1709 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:03:12,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:03:12,359 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 21:03:12,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:03:12,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711553498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:12,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:03:12,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 16 [2022-11-18 21:03:12,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248542607] [2022-11-18 21:03:12,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:12,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:03:12,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:12,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:03:12,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:03:12,363 INFO L87 Difference]: Start difference. First operand 5079 states and 8576 transitions. Second operand has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 21:03:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:15,777 INFO L93 Difference]: Finished difference Result 10154 states and 17542 transitions. [2022-11-18 21:03:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:03:15,778 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-11-18 21:03:15,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:15,816 INFO L225 Difference]: With dead ends: 10154 [2022-11-18 21:03:15,816 INFO L226 Difference]: Without dead ends: 5161 [2022-11-18 21:03:15,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 157 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:03:15,860 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 829 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:15,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 2268 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-18 21:03:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5161 states. [2022-11-18 21:03:18,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5161 to 5137. [2022-11-18 21:03:18,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5137 states, 3890 states have (on average 1.592287917737789) internal successors, (6194), 4006 states have internal predecessors, (6194), 970 states have call successors, (970), 194 states have call predecessors, (970), 276 states have return successors, (1432), 979 states have call predecessors, (1432), 965 states have call successors, (1432) [2022-11-18 21:03:18,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5137 states to 5137 states and 8596 transitions. [2022-11-18 21:03:18,529 INFO L78 Accepts]: Start accepts. Automaton has 5137 states and 8596 transitions. Word has length 132 [2022-11-18 21:03:18,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:18,529 INFO L495 AbstractCegarLoop]: Abstraction has 5137 states and 8596 transitions. [2022-11-18 21:03:18,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.4) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-18 21:03:18,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5137 states and 8596 transitions. [2022-11-18 21:03:18,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 21:03:18,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:18,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:18,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 21:03:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:03:18,756 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:18,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1462667079, now seen corresponding path program 1 times [2022-11-18 21:03:18,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:18,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254339958] [2022-11-18 21:03:18,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:18,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:03:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:03:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:03:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:19,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:03:20,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:03:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 21:03:20,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:03:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:03:20,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 21:03:20,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:03:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:03:20,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:03:20,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254339958] [2022-11-18 21:03:20,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254339958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:03:20,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:03:20,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-18 21:03:20,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526441495] [2022-11-18 21:03:20,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:03:20,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 21:03:20,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:03:20,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 21:03:20,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:03:20,712 INFO L87 Difference]: Start difference. First operand 5137 states and 8596 transitions. Second operand has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 21:04:12,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:12,951 INFO L93 Difference]: Finished difference Result 16306 states and 29571 transitions. [2022-11-18 21:04:12,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-11-18 21:04:12,952 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) Word has length 135 [2022-11-18 21:04:12,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:13,052 INFO L225 Difference]: With dead ends: 16306 [2022-11-18 21:04:13,052 INFO L226 Difference]: Without dead ends: 11255 [2022-11-18 21:04:13,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=483, Invalid=2067, Unknown=0, NotChecked=0, Total=2550 [2022-11-18 21:04:13,111 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 4994 mSDsluCounter, 7180 mSDsCounter, 0 mSdLazyCounter, 21434 mSolverCounterSat, 2446 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5000 SdHoareTripleChecker+Valid, 8182 SdHoareTripleChecker+Invalid, 23880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 2446 IncrementalHoareTripleChecker+Valid, 21434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:13,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5000 Valid, 8182 Invalid, 23880 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [2446 Valid, 21434 Invalid, 0 Unknown, 0 Unchecked, 38.3s Time] [2022-11-18 21:04:13,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11255 states. [2022-11-18 21:04:18,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11255 to 8348. [2022-11-18 21:04:18,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8348 states, 6355 states have (on average 1.5946498819826909) internal successors, (10134), 6523 states have internal predecessors, (10134), 1563 states have call successors, (1563), 289 states have call predecessors, (1563), 429 states have return successors, (2646), 1593 states have call predecessors, (2646), 1558 states have call successors, (2646) [2022-11-18 21:04:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8348 states to 8348 states and 14343 transitions. [2022-11-18 21:04:18,643 INFO L78 Accepts]: Start accepts. Automaton has 8348 states and 14343 transitions. Word has length 135 [2022-11-18 21:04:18,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:18,644 INFO L495 AbstractCegarLoop]: Abstraction has 8348 states and 14343 transitions. [2022-11-18 21:04:18,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.411764705882353) internal successors, (92), 10 states have internal predecessors, (92), 5 states have call successors, (15), 6 states have call predecessors, (15), 7 states have return successors, (14), 9 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-18 21:04:18,644 INFO L276 IsEmpty]: Start isEmpty. Operand 8348 states and 14343 transitions. [2022-11-18 21:04:18,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 21:04:18,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:18,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:18,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 21:04:18,663 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:18,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:18,664 INFO L85 PathProgramCache]: Analyzing trace with hash 744721718, now seen corresponding path program 1 times [2022-11-18 21:04:18,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:18,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410193844] [2022-11-18 21:04:18,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:18,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:18,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:04:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:04:19,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:04:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:04:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:04:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 21:04:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:04:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 21:04:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:04:19,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:19,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410193844] [2022-11-18 21:04:19,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410193844] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:19,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:19,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:04:19,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21069271] [2022-11-18 21:04:19,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:19,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:04:19,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:19,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:04:19,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:04:19,800 INFO L87 Difference]: Start difference. First operand 8348 states and 14343 transitions. Second operand has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 21:04:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:04:37,737 INFO L93 Difference]: Finished difference Result 15335 states and 26581 transitions. [2022-11-18 21:04:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:04:37,738 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 135 [2022-11-18 21:04:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:04:37,822 INFO L225 Difference]: With dead ends: 15335 [2022-11-18 21:04:37,822 INFO L226 Difference]: Without dead ends: 10002 [2022-11-18 21:04:37,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-11-18 21:04:37,854 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 2366 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 5365 mSolverCounterSat, 711 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2454 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 6076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 711 IncrementalHoareTripleChecker+Valid, 5365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:04:37,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2454 Valid, 3228 Invalid, 6076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [711 Valid, 5365 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-11-18 21:04:37,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10002 states. [2022-11-18 21:04:43,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10002 to 8354. [2022-11-18 21:04:43,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8354 states, 6361 states have (on average 1.5940889797201698) internal successors, (10140), 6529 states have internal predecessors, (10140), 1563 states have call successors, (1563), 289 states have call predecessors, (1563), 429 states have return successors, (2646), 1593 states have call predecessors, (2646), 1558 states have call successors, (2646) [2022-11-18 21:04:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8354 states to 8354 states and 14349 transitions. [2022-11-18 21:04:43,196 INFO L78 Accepts]: Start accepts. Automaton has 8354 states and 14349 transitions. Word has length 135 [2022-11-18 21:04:43,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:04:43,197 INFO L495 AbstractCegarLoop]: Abstraction has 8354 states and 14349 transitions. [2022-11-18 21:04:43,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.3) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 21:04:43,197 INFO L276 IsEmpty]: Start isEmpty. Operand 8354 states and 14349 transitions. [2022-11-18 21:04:43,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 21:04:43,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:04:43,214 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:04:43,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 21:04:43,214 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:04:43,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:04:43,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1251842829, now seen corresponding path program 1 times [2022-11-18 21:04:43,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:04:43,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718938918] [2022-11-18 21:04:43,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:04:43,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:04:43,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:04:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:43,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:04:43,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:04:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:04:44,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:04:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 21:04:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:04:44,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 21:04:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 21:04:44,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:04:44,986 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 21:04:44,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:04:44,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718938918] [2022-11-18 21:04:44,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718938918] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:04:44,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:04:44,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 21:04:44,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160409632] [2022-11-18 21:04:44,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:04:44,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 21:04:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:04:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 21:04:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:04:44,994 INFO L87 Difference]: Start difference. First operand 8354 states and 14349 transitions. Second operand has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-18 21:05:07,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:07,264 INFO L93 Difference]: Finished difference Result 20093 states and 35858 transitions. [2022-11-18 21:05:07,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:05:07,265 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-11-18 21:05:07,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:07,373 INFO L225 Difference]: With dead ends: 20093 [2022-11-18 21:05:07,373 INFO L226 Difference]: Without dead ends: 11853 [2022-11-18 21:05:07,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2022-11-18 21:05:07,428 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 3685 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 1777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 3271 SdHoareTripleChecker+Invalid, 6900 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1777 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:07,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 3271 Invalid, 6900 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1777 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-11-18 21:05:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11853 states. [2022-11-18 21:05:13,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11853 to 8874. [2022-11-18 21:05:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8874 states, 6737 states have (on average 1.588837761614962) internal successors, (10704), 6922 states have internal predecessors, (10704), 1676 states have call successors, (1676), 289 states have call predecessors, (1676), 460 states have return successors, (3062), 1725 states have call predecessors, (3062), 1671 states have call successors, (3062) [2022-11-18 21:05:13,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8874 states to 8874 states and 15442 transitions. [2022-11-18 21:05:13,601 INFO L78 Accepts]: Start accepts. Automaton has 8874 states and 15442 transitions. Word has length 141 [2022-11-18 21:05:13,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:13,602 INFO L495 AbstractCegarLoop]: Abstraction has 8874 states and 15442 transitions. [2022-11-18 21:05:13,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.384615384615385) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (16), 6 states have call predecessors, (16), 5 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-18 21:05:13,603 INFO L276 IsEmpty]: Start isEmpty. Operand 8874 states and 15442 transitions. [2022-11-18 21:05:13,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 21:05:13,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:13,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:13,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 21:05:13,624 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:13,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1572130410, now seen corresponding path program 1 times [2022-11-18 21:05:13,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:13,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885698534] [2022-11-18 21:05:13,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:13,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:13,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:13,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:13,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:05:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:05:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:05:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 21:05:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:05:14,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 21:05:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:05:14,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885698534] [2022-11-18 21:05:14,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885698534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:14,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:14,749 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:05:14,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066044470] [2022-11-18 21:05:14,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:14,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:05:14,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:14,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:05:14,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:05:14,753 INFO L87 Difference]: Start difference. First operand 8874 states and 15442 transitions. Second operand has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 21:05:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:28,318 INFO L93 Difference]: Finished difference Result 13240 states and 23458 transitions. [2022-11-18 21:05:28,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 21:05:28,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 141 [2022-11-18 21:05:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:28,343 INFO L225 Difference]: With dead ends: 13240 [2022-11-18 21:05:28,344 INFO L226 Difference]: Without dead ends: 4380 [2022-11-18 21:05:28,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:05:28,376 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1952 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 5294 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2037 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 5863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 5294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:28,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2037 Valid, 3138 Invalid, 5863 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [569 Valid, 5294 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-11-18 21:05:28,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2022-11-18 21:05:29,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 2145. [2022-11-18 21:05:29,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1659 states have (on average 1.6033755274261603) internal successors, (2660), 1713 states have internal predecessors, (2660), 358 states have call successors, (358), 99 states have call predecessors, (358), 127 states have return successors, (468), 343 states have call predecessors, (468), 353 states have call successors, (468) [2022-11-18 21:05:29,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 3486 transitions. [2022-11-18 21:05:29,813 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 3486 transitions. Word has length 141 [2022-11-18 21:05:29,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:29,813 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 3486 transitions. [2022-11-18 21:05:29,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 9.9) internal successors, (99), 6 states have internal predecessors, (99), 3 states have call successors, (15), 6 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 21:05:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 3486 transitions. [2022-11-18 21:05:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-18 21:05:29,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:29,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:29,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 21:05:29,817 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:29,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:29,817 INFO L85 PathProgramCache]: Analyzing trace with hash 364483103, now seen corresponding path program 1 times [2022-11-18 21:05:29,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:29,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654807884] [2022-11-18 21:05:29,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:29,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:05:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:05:30,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:30,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:05:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:05:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:05:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:05:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,431 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-18 21:05:31,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:31,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654807884] [2022-11-18 21:05:31,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654807884] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:05:31,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116029932] [2022-11-18 21:05:31,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:31,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:05:31,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:05:31,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:05:31,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 21:05:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:31,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1748 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 21:05:31,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:05:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 21:05:32,188 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:05:32,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116029932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:32,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:05:32,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 19 [2022-11-18 21:05:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026642594] [2022-11-18 21:05:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:05:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:05:32,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:05:32,191 INFO L87 Difference]: Start difference. First operand 2145 states and 3486 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 21:05:33,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:05:33,899 INFO L93 Difference]: Finished difference Result 2292 states and 3745 transitions. [2022-11-18 21:05:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:05:33,899 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 144 [2022-11-18 21:05:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:05:33,912 INFO L225 Difference]: With dead ends: 2292 [2022-11-18 21:05:33,912 INFO L226 Difference]: Without dead ends: 2277 [2022-11-18 21:05:33,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 175 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-11-18 21:05:33,916 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 857 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:05:33,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 1526 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 21:05:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-11-18 21:05:35,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2157. [2022-11-18 21:05:35,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2157 states, 1671 states have (on average 1.5990424895272293) internal successors, (2672), 1725 states have internal predecessors, (2672), 358 states have call successors, (358), 99 states have call predecessors, (358), 127 states have return successors, (468), 343 states have call predecessors, (468), 353 states have call successors, (468) [2022-11-18 21:05:35,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2157 states to 2157 states and 3498 transitions. [2022-11-18 21:05:35,265 INFO L78 Accepts]: Start accepts. Automaton has 2157 states and 3498 transitions. Word has length 144 [2022-11-18 21:05:35,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:05:35,266 INFO L495 AbstractCegarLoop]: Abstraction has 2157 states and 3498 transitions. [2022-11-18 21:05:35,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 21:05:35,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2157 states and 3498 transitions. [2022-11-18 21:05:35,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-11-18 21:05:35,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:05:35,270 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:05:35,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 21:05:35,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 21:05:35,471 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:05:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:05:35,472 INFO L85 PathProgramCache]: Analyzing trace with hash 912693114, now seen corresponding path program 1 times [2022-11-18 21:05:35,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:05:35,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586119972] [2022-11-18 21:05:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:05:35,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:05:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:05:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:05:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:05:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:05:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:05:36,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:05:36,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:05:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:05:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 21:05:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:05:36,522 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-18 21:05:36,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:05:36,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586119972] [2022-11-18 21:05:36,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586119972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:05:36,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:05:36,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:05:36,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064080699] [2022-11-18 21:05:36,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:05:36,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:05:36,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:05:36,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:05:36,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:05:36,528 INFO L87 Difference]: Start difference. First operand 2157 states and 3498 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 21:06:06,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:06,466 INFO L93 Difference]: Finished difference Result 8236 states and 13968 transitions. [2022-11-18 21:06:06,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-18 21:06:06,467 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 150 [2022-11-18 21:06:06,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:06,509 INFO L225 Difference]: With dead ends: 8236 [2022-11-18 21:06:06,509 INFO L226 Difference]: Without dead ends: 6132 [2022-11-18 21:06:06,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=558, Invalid=2304, Unknown=0, NotChecked=0, Total=2862 [2022-11-18 21:06:06,522 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 4605 mSDsluCounter, 2753 mSDsCounter, 0 mSdLazyCounter, 6818 mSolverCounterSat, 1880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4622 SdHoareTripleChecker+Valid, 3347 SdHoareTripleChecker+Invalid, 8698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1880 IncrementalHoareTripleChecker+Valid, 6818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:06,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4622 Valid, 3347 Invalid, 8698 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1880 Valid, 6818 Invalid, 0 Unknown, 0 Unchecked, 20.8s Time] [2022-11-18 21:06:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6132 states. [2022-11-18 21:06:09,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6132 to 4592. [2022-11-18 21:06:09,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4592 states, 3577 states have (on average 1.5977075761811574) internal successors, (5715), 3674 states have internal predecessors, (5715), 732 states have call successors, (732), 225 states have call predecessors, (732), 282 states have return successors, (1044), 714 states have call predecessors, (1044), 727 states have call successors, (1044) [2022-11-18 21:06:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4592 states to 4592 states and 7491 transitions. [2022-11-18 21:06:09,389 INFO L78 Accepts]: Start accepts. Automaton has 4592 states and 7491 transitions. Word has length 150 [2022-11-18 21:06:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:09,389 INFO L495 AbstractCegarLoop]: Abstraction has 4592 states and 7491 transitions. [2022-11-18 21:06:09,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-18 21:06:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4592 states and 7491 transitions. [2022-11-18 21:06:09,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-18 21:06:09,394 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:09,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:09,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 21:06:09,394 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:09,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:09,395 INFO L85 PathProgramCache]: Analyzing trace with hash 471964120, now seen corresponding path program 1 times [2022-11-18 21:06:09,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:09,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640687193] [2022-11-18 21:06:09,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:09,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:09,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:09,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:06:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:06:10,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:10,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:10,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:06:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:10,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:06:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:06:11,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 21:06:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 21:06:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 21:06:11,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-18 21:06:11,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:11,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640687193] [2022-11-18 21:06:11,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640687193] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:06:11,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988590873] [2022-11-18 21:06:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:11,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:06:11,135 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:06:11,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 21:06:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:11,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1801 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 21:06:11,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:06:11,961 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 21:06:11,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:06:11,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988590873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:11,962 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:06:11,962 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 23 [2022-11-18 21:06:11,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955153977] [2022-11-18 21:06:11,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:11,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:06:11,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:11,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:06:11,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-11-18 21:06:11,964 INFO L87 Difference]: Start difference. First operand 4592 states and 7491 transitions. Second operand has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 21:06:19,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:19,493 INFO L93 Difference]: Finished difference Result 10742 states and 17732 transitions. [2022-11-18 21:06:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 21:06:19,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 161 [2022-11-18 21:06:19,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:19,520 INFO L225 Difference]: With dead ends: 10742 [2022-11-18 21:06:19,520 INFO L226 Difference]: Without dead ends: 6203 [2022-11-18 21:06:19,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 21:06:19,535 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 2964 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 613 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3042 SdHoareTripleChecker+Valid, 2382 SdHoareTripleChecker+Invalid, 5072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 613 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:19,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3042 Valid, 2382 Invalid, 5072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [613 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-18 21:06:19,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6203 states. [2022-11-18 21:06:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6203 to 5668. [2022-11-18 21:06:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 4403 states have (on average 1.6045877810583693) internal successors, (7065), 4536 states have internal predecessors, (7065), 914 states have call successors, (914), 257 states have call predecessors, (914), 350 states have return successors, (1302), 896 states have call predecessors, (1302), 909 states have call successors, (1302) [2022-11-18 21:06:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 9281 transitions. [2022-11-18 21:06:22,511 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 9281 transitions. Word has length 161 [2022-11-18 21:06:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:22,512 INFO L495 AbstractCegarLoop]: Abstraction has 5668 states and 9281 transitions. [2022-11-18 21:06:22,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.625) internal successors, (109), 8 states have internal predecessors, (109), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-18 21:06:22,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 9281 transitions. [2022-11-18 21:06:22,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-18 21:06:22,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:22,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:22,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 21:06:22,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:06:22,725 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:22,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:22,725 INFO L85 PathProgramCache]: Analyzing trace with hash 596946938, now seen corresponding path program 1 times [2022-11-18 21:06:22,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:22,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704029895] [2022-11-18 21:06:22,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:22,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:22,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:06:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:06:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:06:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:06:23,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 21:06:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:06:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 21:06:23,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 21:06:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-18 21:06:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:23,877 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-18 21:06:23,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:23,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704029895] [2022-11-18 21:06:23,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704029895] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:23,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:23,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 21:06:23,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571156845] [2022-11-18 21:06:23,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:23,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 21:06:23,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:23,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 21:06:23,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:06:23,880 INFO L87 Difference]: Start difference. First operand 5668 states and 9281 transitions. Second operand has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-18 21:06:49,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:06:49,880 INFO L93 Difference]: Finished difference Result 13363 states and 22581 transitions. [2022-11-18 21:06:49,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-18 21:06:49,881 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 166 [2022-11-18 21:06:49,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:06:49,917 INFO L225 Difference]: With dead ends: 13363 [2022-11-18 21:06:49,917 INFO L226 Difference]: Without dead ends: 7748 [2022-11-18 21:06:49,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=249, Invalid=807, Unknown=0, NotChecked=0, Total=1056 [2022-11-18 21:06:49,937 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 4114 mSDsluCounter, 3200 mSDsCounter, 0 mSdLazyCounter, 7592 mSolverCounterSat, 1300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 8892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1300 IncrementalHoareTripleChecker+Valid, 7592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:06:49,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4185 Valid, 3711 Invalid, 8892 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1300 Valid, 7592 Invalid, 0 Unknown, 0 Unchecked, 17.2s Time] [2022-11-18 21:06:49,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7748 states. [2022-11-18 21:06:53,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7748 to 6220. [2022-11-18 21:06:53,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6220 states, 4867 states have (on average 1.611054037394699) internal successors, (7841), 5000 states have internal predecessors, (7841), 970 states have call successors, (970), 289 states have call predecessors, (970), 382 states have return successors, (1376), 952 states have call predecessors, (1376), 965 states have call successors, (1376) [2022-11-18 21:06:53,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6220 states to 6220 states and 10187 transitions. [2022-11-18 21:06:53,495 INFO L78 Accepts]: Start accepts. Automaton has 6220 states and 10187 transitions. Word has length 166 [2022-11-18 21:06:53,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:06:53,496 INFO L495 AbstractCegarLoop]: Abstraction has 6220 states and 10187 transitions. [2022-11-18 21:06:53,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.333333333333334) internal successors, (112), 8 states have internal predecessors, (112), 5 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-18 21:06:53,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6220 states and 10187 transitions. [2022-11-18 21:06:53,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-18 21:06:53,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:06:53,501 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:06:53,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 21:06:53,501 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:06:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:06:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash 260532643, now seen corresponding path program 1 times [2022-11-18 21:06:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:06:53,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041855553] [2022-11-18 21:06:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:06:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:06:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:53,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:53,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:53,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:06:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:06:54,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:06:54,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:06:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:06:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:06:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 21:06:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:06:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:06:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:06:54,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 21:06:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:06:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:06:54,648 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 21:06:54,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:06:54,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041855553] [2022-11-18 21:06:54,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041855553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:06:54,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:06:54,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 21:06:54,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233462898] [2022-11-18 21:06:54,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:06:54,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 21:06:54,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:06:54,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 21:06:54,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-18 21:06:54,652 INFO L87 Difference]: Start difference. First operand 6220 states and 10187 transitions. Second operand has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:07:34,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:34,113 INFO L93 Difference]: Finished difference Result 21012 states and 35697 transitions. [2022-11-18 21:07:34,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-18 21:07:34,114 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 171 [2022-11-18 21:07:34,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:34,209 INFO L225 Difference]: With dead ends: 21012 [2022-11-18 21:07:34,209 INFO L226 Difference]: Without dead ends: 14853 [2022-11-18 21:07:34,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=406, Invalid=1316, Unknown=0, NotChecked=0, Total=1722 [2022-11-18 21:07:34,242 INFO L413 NwaCegarLoop]: 791 mSDtfsCounter, 3433 mSDsluCounter, 3244 mSDsCounter, 0 mSdLazyCounter, 11678 mSolverCounterSat, 1735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3480 SdHoareTripleChecker+Valid, 4035 SdHoareTripleChecker+Invalid, 13413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1735 IncrementalHoareTripleChecker+Valid, 11678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:34,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3480 Valid, 4035 Invalid, 13413 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1735 Valid, 11678 Invalid, 0 Unknown, 0 Unchecked, 23.3s Time] [2022-11-18 21:07:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14853 states. [2022-11-18 21:07:38,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14853 to 7950. [2022-11-18 21:07:38,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 6241 states have (on average 1.6120813972119852) internal successors, (10061), 6402 states have internal predecessors, (10061), 1212 states have call successors, (1212), 375 states have call predecessors, (1212), 496 states have return successors, (1730), 1194 states have call predecessors, (1730), 1207 states have call successors, (1730) [2022-11-18 21:07:39,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 13003 transitions. [2022-11-18 21:07:39,063 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 13003 transitions. Word has length 171 [2022-11-18 21:07:39,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:39,063 INFO L495 AbstractCegarLoop]: Abstraction has 7950 states and 13003 transitions. [2022-11-18 21:07:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.272727272727273) internal successors, (113), 6 states have internal predecessors, (113), 3 states have call successors, (20), 6 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:07:39,064 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 13003 transitions. [2022-11-18 21:07:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-18 21:07:39,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:39,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:39,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 21:07:39,066 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:07:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:07:39,067 INFO L85 PathProgramCache]: Analyzing trace with hash -2106161951, now seen corresponding path program 1 times [2022-11-18 21:07:39,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:07:39,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251276209] [2022-11-18 21:07:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:39,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:07:39,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:07:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:39,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:39,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:39,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:07:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:39,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:07:39,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:39,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:39,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:07:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:07:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:07:40,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:07:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 21:07:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:07:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:07:40,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:07:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 21:07:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:07:40,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,508 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 21:07:40,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:07:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251276209] [2022-11-18 21:07:40,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251276209] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:07:40,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110162116] [2022-11-18 21:07:40,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:07:40,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:07:40,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:07:40,513 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:07:40,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 21:07:40,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:07:40,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1834 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:07:40,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:07:41,130 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 21:07:41,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:07:41,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110162116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:07:41,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:07:41,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-18 21:07:41,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895742847] [2022-11-18 21:07:41,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:07:41,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:07:41,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:07:41,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:07:41,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:07:41,133 INFO L87 Difference]: Start difference. First operand 7950 states and 13003 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:07:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:07:51,906 INFO L93 Difference]: Finished difference Result 21004 states and 34996 transitions. [2022-11-18 21:07:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:07:51,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 171 [2022-11-18 21:07:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:07:51,963 INFO L225 Difference]: With dead ends: 21004 [2022-11-18 21:07:51,963 INFO L226 Difference]: Without dead ends: 13099 [2022-11-18 21:07:51,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:07:51,986 INFO L413 NwaCegarLoop]: 420 mSDtfsCounter, 1903 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 398 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1978 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 1795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:07:51,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1978 Valid, 959 Invalid, 1795 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-18 21:07:51,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13099 states. [2022-11-18 21:07:59,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13099 to 12463. [2022-11-18 21:07:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12463 states, 9747 states have (on average 1.603980712013953) internal successors, (15634), 10031 states have internal predecessors, (15634), 1911 states have call successors, (1911), 588 states have call predecessors, (1911), 804 states have return successors, (2970), 1897 states have call predecessors, (2970), 1906 states have call successors, (2970) [2022-11-18 21:07:59,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12463 states to 12463 states and 20515 transitions. [2022-11-18 21:07:59,954 INFO L78 Accepts]: Start accepts. Automaton has 12463 states and 20515 transitions. Word has length 171 [2022-11-18 21:07:59,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:07:59,955 INFO L495 AbstractCegarLoop]: Abstraction has 12463 states and 20515 transitions. [2022-11-18 21:07:59,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:07:59,955 INFO L276 IsEmpty]: Start isEmpty. Operand 12463 states and 20515 transitions. [2022-11-18 21:07:59,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-11-18 21:07:59,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:07:59,961 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:07:59,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:00,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 21:08:00,166 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:00,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:00,166 INFO L85 PathProgramCache]: Analyzing trace with hash -866791959, now seen corresponding path program 1 times [2022-11-18 21:08:00,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:00,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028445954] [2022-11-18 21:08:00,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:00,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:08:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:00,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:08:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:08:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:00,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:08:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:08:01,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 21:08:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:08:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:08:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:08:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 21:08:01,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:08:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 21:08:01,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:01,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028445954] [2022-11-18 21:08:01,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028445954] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:01,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781584000] [2022-11-18 21:08:01,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:01,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:01,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:01,520 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:01,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 21:08:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:01,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:08:01,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 21:08:02,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:02,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [781584000] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:02,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:02,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-18 21:08:02,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710144531] [2022-11-18 21:08:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:02,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:02,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:02,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:02,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:02,164 INFO L87 Difference]: Start difference. First operand 12463 states and 20515 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:08:18,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:08:18,018 INFO L93 Difference]: Finished difference Result 35595 states and 60812 transitions. [2022-11-18 21:08:18,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:08:18,018 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 172 [2022-11-18 21:08:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:08:18,160 INFO L225 Difference]: With dead ends: 35595 [2022-11-18 21:08:18,161 INFO L226 Difference]: Without dead ends: 23177 [2022-11-18 21:08:18,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 212 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:08:18,217 INFO L413 NwaCegarLoop]: 396 mSDtfsCounter, 1906 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 1378 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1980 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 1378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 21:08:18,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1980 Valid, 918 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 1378 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 21:08:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23177 states. [2022-11-18 21:08:32,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23177 to 21986. [2022-11-18 21:08:32,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21986 states, 17084 states have (on average 1.595527979395926) internal successors, (27258), 17656 states have internal predecessors, (27258), 3445 states have call successors, (3445), 1014 states have call predecessors, (3445), 1456 states have return successors, (6188), 3451 states have call predecessors, (6188), 3440 states have call successors, (6188) [2022-11-18 21:08:32,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21986 states to 21986 states and 36891 transitions. [2022-11-18 21:08:32,191 INFO L78 Accepts]: Start accepts. Automaton has 21986 states and 36891 transitions. Word has length 172 [2022-11-18 21:08:32,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:08:32,192 INFO L495 AbstractCegarLoop]: Abstraction has 21986 states and 36891 transitions. [2022-11-18 21:08:32,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 4 states have internal predecessors, (114), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:08:32,192 INFO L276 IsEmpty]: Start isEmpty. Operand 21986 states and 36891 transitions. [2022-11-18 21:08:32,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-11-18 21:08:32,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:08:32,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:08:32,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 21:08:32,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:32,398 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:08:32,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:08:32,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1101023965, now seen corresponding path program 1 times [2022-11-18 21:08:32,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:08:32,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570979334] [2022-11-18 21:08:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:32,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:08:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:08:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:32,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:32,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 21:08:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:08:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 21:08:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 21:08:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 21:08:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:08:33,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-18 21:08:33,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-18 21:08:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 21:08:33,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-11-18 21:08:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-18 21:08:33,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-18 21:08:33,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:33,823 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-18 21:08:33,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:08:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570979334] [2022-11-18 21:08:33,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570979334] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 21:08:33,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35421989] [2022-11-18 21:08:33,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:08:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 21:08:33,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 21:08:33,825 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 21:08:33,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5ea03370-504b-4c21-b02f-0a35252f0a3e/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 21:08:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:08:34,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 21:08:34,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 21:08:34,431 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-18 21:08:34,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 21:08:34,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35421989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:08:34,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 21:08:34,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2022-11-18 21:08:34,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721786803] [2022-11-18 21:08:34,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:08:34,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:08:34,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:08:34,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:08:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-11-18 21:08:34,434 INFO L87 Difference]: Start difference. First operand 21986 states and 36891 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 21:09:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:09:05,361 INFO L93 Difference]: Finished difference Result 66554 states and 119839 transitions. [2022-11-18 21:09:05,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 21:09:05,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 173 [2022-11-18 21:09:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:09:05,619 INFO L225 Difference]: With dead ends: 66554 [2022-11-18 21:09:05,619 INFO L226 Difference]: Without dead ends: 44613 [2022-11-18 21:09:05,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 213 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-18 21:09:05,717 INFO L413 NwaCegarLoop]: 399 mSDtfsCounter, 1893 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 1376 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1966 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 1376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:09:05,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1966 Valid, 918 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 1376 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 21:09:05,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44613 states.