./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8 --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 d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 --- 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-2329fc7 [2022-12-13 14:29:00,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 14:29:00,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 14:29:00,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 14:29:00,838 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 14:29:00,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 14:29:00,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 14:29:00,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 14:29:00,848 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 14:29:00,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 14:29:00,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 14:29:00,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 14:29:00,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 14:29:00,850 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 14:29:00,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 14:29:00,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 14:29:00,853 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 14:29:00,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 14:29:00,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 14:29:00,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 14:29:00,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 14:29:00,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 14:29:00,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 14:29:00,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 14:29:00,861 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 14:29:00,861 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 14:29:00,861 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 14:29:00,862 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 14:29:00,862 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 14:29:00,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 14:29:00,863 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 14:29:00,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 14:29:00,864 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 14:29:00,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 14:29:00,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 14:29:00,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 14:29:00,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 14:29:00,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 14:29:00,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 14:29:00,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 14:29:00,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 14:29:00,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 14:29:00,880 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 14:29:00,881 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 14:29:00,881 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 14:29:00,881 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 14:29:00,881 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 14:29:00,881 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 14:29:00,882 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 14:29:00,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 14:29:00,882 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 14:29:00,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 14:29:00,883 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 14:29:00,884 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 14:29:00,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:29:00,885 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 14:29:00,885 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 14:29:00,886 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 14:29:00,886 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 14:29:00,886 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d51a9662ec11e877bdc62fbff8cdf19fcc101bb2b0234c411e7900fe51bd7f38 [2022-12-13 14:29:01,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 14:29:01,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 14:29:01,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 14:29:01,086 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 14:29:01,087 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 14:29:01,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2022-12-13 14:29:03,658 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 14:29:03,904 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 14:29:03,905 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c [2022-12-13 14:29:03,916 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/data/39d56edab/7a8e234eca534ad590fba092cd087649/FLAG0373eaae2 [2022-12-13 14:29:03,927 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/data/39d56edab/7a8e234eca534ad590fba092cd087649 [2022-12-13 14:29:03,929 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 14:29:03,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 14:29:03,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 14:29:03,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 14:29:03,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 14:29:03,934 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:29:03" (1/1) ... [2022-12-13 14:29:03,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d7765a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:03, skipping insertion in model container [2022-12-13 14:29:03,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 02:29:03" (1/1) ... [2022-12-13 14:29:03,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 14:29:03,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 14:29:04,151 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,154 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,158 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,268 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,306 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,309 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,316 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,318 WARN L237 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_e58dbe22-7f9c-4d5a-b463-29896090d967/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2022-12-13 14:29:04,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:29:04,339 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 14:29:04,349 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,350 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,351 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,381 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,393 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,394 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,398 WARN L623 FunctionHandler]: Unknown extern function puts [2022-12-13 14:29:04,399 WARN L237 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_e58dbe22-7f9c-4d5a-b463-29896090d967/sv-benchmarks/c/product-lines/email_spec27_product31.cil.c[61351,61364] [2022-12-13 14:29:04,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 14:29:04,421 INFO L208 MainTranslator]: Completed translation [2022-12-13 14:29:04,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04 WrapperNode [2022-12-13 14:29:04,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 14:29:04,423 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 14:29:04,423 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 14:29:04,423 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 14:29:04,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,473 INFO L138 Inliner]: procedures = 131, calls = 219, calls flagged for inlining = 60, calls inlined = 55, statements flattened = 1010 [2022-12-13 14:29:04,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 14:29:04,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 14:29:04,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 14:29:04,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 14:29:04,481 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,501 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 14:29:04,509 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 14:29:04,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 14:29:04,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 14:29:04,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (1/1) ... [2022-12-13 14:29:04,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 14:29:04,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:04,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 14:29:04,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 14:29:04,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-12-13 14:29:04,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-12-13 14:29:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-12-13 14:29:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-12-13 14:29:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-12-13 14:29:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-12-13 14:29:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-12-13 14:29:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-12-13 14:29:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-12-13 14:29:04,568 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-12-13 14:29:04,568 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-12-13 14:29:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-12-13 14:29:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-12-13 14:29:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-12-13 14:29:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-12-13 14:29:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-12-13 14:29:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-12-13 14:29:04,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-12-13 14:29:04,569 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-12-13 14:29:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-12-13 14:29:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-12-13 14:29:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-12-13 14:29:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-12-13 14:29:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-12-13 14:29:04,570 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-12-13 14:29:04,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 14:29:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-12-13 14:29:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-12-13 14:29:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-12-13 14:29:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-12-13 14:29:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-12-13 14:29:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-12-13 14:29:04,571 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-12-13 14:29:04,571 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-12-13 14:29:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-12-13 14:29:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-12-13 14:29:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2022-12-13 14:29:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2022-12-13 14:29:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-12-13 14:29:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-12-13 14:29:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-12-13 14:29:04,572 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-12-13 14:29:04,572 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-12-13 14:29:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-12-13 14:29:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-12-13 14:29:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-12-13 14:29:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-12-13 14:29:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-12-13 14:29:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 14:29:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-12-13 14:29:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-12-13 14:29:04,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 14:29:04,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 14:29:04,728 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 14:29:04,731 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 14:29:05,338 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 14:29:05,348 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 14:29:05,349 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 14:29:05,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:29:05 BoogieIcfgContainer [2022-12-13 14:29:05,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 14:29:05,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 14:29:05,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 14:29:05,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 14:29:05,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 02:29:03" (1/3) ... [2022-12-13 14:29:05,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c39e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:29:05, skipping insertion in model container [2022-12-13 14:29:05,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 02:29:04" (2/3) ... [2022-12-13 14:29:05,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c3c39e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 02:29:05, skipping insertion in model container [2022-12-13 14:29:05,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 02:29:05" (3/3) ... [2022-12-13 14:29:05,359 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec27_product31.cil.c [2022-12-13 14:29:05,378 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 14:29:05,378 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 14:29:05,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 14:29:05,431 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;@5766ceac, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 14:29:05,431 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 14:29:05,437 INFO L276 IsEmpty]: Start isEmpty. Operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) [2022-12-13 14:29:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-12-13 14:29:05,453 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:05,454 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-12-13 14:29:05,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:05,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1583649315, now seen corresponding path program 1 times [2022-12-13 14:29:05,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:05,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013583127] [2022-12-13 14:29:05,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:05,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:05,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:05,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:05,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:29:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:05,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:29:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:29:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 14:29:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-12-13 14:29:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:29:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:29:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:29:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 14:29:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 14:29:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 14:29:06,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 14:29:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:06,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 14:29:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 14:29:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 14:29:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,059 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 14:29:06,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:06,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013583127] [2022-12-13 14:29:06,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013583127] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:06,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900539244] [2022-12-13 14:29:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:06,061 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:06,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 14:29:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 1219 conjuncts, 1 conjunts are in the unsatisfiable core [2022-12-13 14:29:06,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:06,367 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 14:29:06,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:29:06,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900539244] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:06,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:29:06,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-12-13 14:29:06,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144297713] [2022-12-13 14:29:06,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:06,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-13 14:29:06,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:06,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-13 14:29:06,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:29:06,400 INFO L87 Difference]: Start difference. First operand has 375 states, 288 states have (on average 1.4965277777777777) internal successors, (431), 292 states have internal predecessors, (431), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (61), 61 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:06,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:06,445 INFO L93 Difference]: Finished difference Result 596 states and 860 transitions. [2022-12-13 14:29:06,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-13 14:29:06,448 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 142 [2022-12-13 14:29:06,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:06,457 INFO L225 Difference]: With dead ends: 596 [2022-12-13 14:29:06,457 INFO L226 Difference]: Without dead ends: 368 [2022-12-13 14:29:06,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:29:06,463 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:06,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:29:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-12-13 14:29:06,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 368. [2022-12-13 14:29:06,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 282 states have (on average 1.4893617021276595) internal successors, (420), 285 states have internal predecessors, (420), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-13 14:29:06,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 541 transitions. [2022-12-13 14:29:06,513 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 541 transitions. Word has length 142 [2022-12-13 14:29:06,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:06,514 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 541 transitions. [2022-12-13 14:29:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.5) internal successors, (77), 2 states have internal predecessors, (77), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:06,514 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 541 transitions. [2022-12-13 14:29:06,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-12-13 14:29:06,519 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:06,519 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-12-13 14:29:06,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 14:29:06,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-12-13 14:29:06,721 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:06,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:06,721 INFO L85 PathProgramCache]: Analyzing trace with hash -235666976, now seen corresponding path program 1 times [2022-12-13 14:29:06,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:06,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920199772] [2022-12-13 14:29:06,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:06,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:06,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:29:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:29:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:29:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 14:29:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-12-13 14:29:06,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:29:06,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 14:29:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:29:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 14:29:06,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:29:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:29:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 14:29:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 14:29:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 14:29:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:29:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:06,974 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 14:29:06,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:06,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920199772] [2022-12-13 14:29:06,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920199772] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:06,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477689241] [2022-12-13 14:29:06,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:06,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:06,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:06,977 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:06,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 14:29:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 1220 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 14:29:07,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 14:29:07,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:29:07,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477689241] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:07,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:29:07,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 14:29:07,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524375288] [2022-12-13 14:29:07,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:07,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:29:07,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:07,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:29:07,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:29:07,241 INFO L87 Difference]: Start difference. First operand 368 states and 541 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:07,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:07,274 INFO L93 Difference]: Finished difference Result 586 states and 841 transitions. [2022-12-13 14:29:07,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:29:07,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2022-12-13 14:29:07,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:07,279 INFO L225 Difference]: With dead ends: 586 [2022-12-13 14:29:07,279 INFO L226 Difference]: Without dead ends: 371 [2022-12-13 14:29:07,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:29:07,281 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 1 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:07,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1076 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:29:07,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-12-13 14:29:07,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 370. [2022-12-13 14:29:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 284 states have (on average 1.4859154929577465) internal successors, (422), 287 states have internal predecessors, (422), 61 states have call successors, (61), 24 states have call predecessors, (61), 24 states have return successors, (60), 60 states have call predecessors, (60), 60 states have call successors, (60) [2022-12-13 14:29:07,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 543 transitions. [2022-12-13 14:29:07,308 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 543 transitions. Word has length 143 [2022-12-13 14:29:07,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:07,309 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 543 transitions. [2022-12-13 14:29:07,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:07,309 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 543 transitions. [2022-12-13 14:29:07,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-12-13 14:29:07,314 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:07,314 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-12-13 14:29:07,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 14:29:07,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:07,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1061274825, now seen corresponding path program 1 times [2022-12-13 14:29:07,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:07,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760807189] [2022-12-13 14:29:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:07,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:29:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:29:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:29:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-12-13 14:29:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 14:29:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:29:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:29:07,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:29:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:29:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:29:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:29:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 14:29:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 14:29:07,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:29:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 14:29:07,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:07,783 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:29:07,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:07,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760807189] [2022-12-13 14:29:07,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760807189] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:07,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832027157] [2022-12-13 14:29:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:07,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:07,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:07,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:07,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 14:29:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 1234 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:29:08,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:08,045 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 14:29:08,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:29:08,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832027157] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:08,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:29:08,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-12-13 14:29:08,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900555598] [2022-12-13 14:29:08,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:08,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 14:29:08,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:08,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 14:29:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:29:08,047 INFO L87 Difference]: Start difference. First operand 370 states and 543 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:08,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:08,086 INFO L93 Difference]: Finished difference Result 770 states and 1145 transitions. [2022-12-13 14:29:08,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 14:29:08,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 149 [2022-12-13 14:29:08,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:08,091 INFO L225 Difference]: With dead ends: 770 [2022-12-13 14:29:08,091 INFO L226 Difference]: Without dead ends: 427 [2022-12-13 14:29:08,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-12-13 14:29:08,094 INFO L413 NwaCegarLoop]: 558 mSDtfsCounter, 107 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:08,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1052 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:29:08,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-12-13 14:29:08,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 419. [2022-12-13 14:29:08,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 419 states, 322 states have (on average 1.5031055900621118) internal successors, (484), 325 states have internal predecessors, (484), 72 states have call successors, (72), 24 states have call predecessors, (72), 24 states have return successors, (71), 71 states have call predecessors, (71), 71 states have call successors, (71) [2022-12-13 14:29:08,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 627 transitions. [2022-12-13 14:29:08,118 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 627 transitions. Word has length 149 [2022-12-13 14:29:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:08,119 INFO L495 AbstractCegarLoop]: Abstraction has 419 states and 627 transitions. [2022-12-13 14:29:08,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 627 transitions. [2022-12-13 14:29:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-13 14:29:08,122 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:08,122 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-12-13 14:29:08,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-13 14:29:08,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:08,324 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:08,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:08,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1298752054, now seen corresponding path program 1 times [2022-12-13 14:29:08,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:08,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675406494] [2022-12-13 14:29:08,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:08,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-12-13 14:29:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-12-13 14:29:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-12-13 14:29:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-12-13 14:29:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 14:29:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:29:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:29:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:29:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:29:08,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:29:08,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 14:29:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:29:08,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 14:29:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 14:29:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 14:29:08,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:29:08,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675406494] [2022-12-13 14:29:08,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675406494] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:08,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462895430] [2022-12-13 14:29:08,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:08,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:08,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:08,646 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:08,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 14:29:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:08,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 1241 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-13 14:29:08,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:08,917 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:29:08,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:29:08,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462895430] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:08,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:29:08,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 14:29:08,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388302270] [2022-12-13 14:29:08,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:08,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:29:08,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:08,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:29:08,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:29:08,918 INFO L87 Difference]: Start difference. First operand 419 states and 627 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:08,988 INFO L93 Difference]: Finished difference Result 829 states and 1244 transitions. [2022-12-13 14:29:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:29:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 150 [2022-12-13 14:29:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:08,991 INFO L225 Difference]: With dead ends: 829 [2022-12-13 14:29:08,991 INFO L226 Difference]: Without dead ends: 421 [2022-12-13 14:29:08,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:08,994 INFO L413 NwaCegarLoop]: 532 mSDtfsCounter, 125 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:08,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1983 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:29:08,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-12-13 14:29:09,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2022-12-13 14:29:09,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 323 states have (on average 1.501547987616099) internal successors, (485), 327 states have internal predecessors, (485), 72 states have call successors, (72), 24 states have call predecessors, (72), 25 states have return successors, (73), 71 states have call predecessors, (73), 71 states have call successors, (73) [2022-12-13 14:29:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 630 transitions. [2022-12-13 14:29:09,029 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 630 transitions. Word has length 150 [2022-12-13 14:29:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:09,029 INFO L495 AbstractCegarLoop]: Abstraction has 421 states and 630 transitions. [2022-12-13 14:29:09,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 630 transitions. [2022-12-13 14:29:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-12-13 14:29:09,033 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:09,033 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:09,039 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 14:29:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:09,234 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:09,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:09,235 INFO L85 PathProgramCache]: Analyzing trace with hash 761272147, now seen corresponding path program 1 times [2022-12-13 14:29:09,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:09,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267175718] [2022-12-13 14:29:09,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:09,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:09,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-12-13 14:29:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-12-13 14:29:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-12-13 14:29:09,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:29:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 14:29:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:29:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:29:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 14:29:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:29:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 14:29:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:29:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 14:29:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:29:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 14:29:09,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 14:29:09,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267175718] [2022-12-13 14:29:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267175718] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225990834] [2022-12-13 14:29:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:09,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:09,491 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:09,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 14:29:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:09,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 1242 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:29:09,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:09,793 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 14:29:09,794 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:29:09,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225990834] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:09,794 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:29:09,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-12-13 14:29:09,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297217680] [2022-12-13 14:29:09,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:09,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:29:09,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:29:09,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-12-13 14:29:09,797 INFO L87 Difference]: Start difference. First operand 421 states and 630 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:09,878 INFO L93 Difference]: Finished difference Result 831 states and 1249 transitions. [2022-12-13 14:29:09,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:29:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 151 [2022-12-13 14:29:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:09,882 INFO L225 Difference]: With dead ends: 831 [2022-12-13 14:29:09,882 INFO L226 Difference]: Without dead ends: 423 [2022-12-13 14:29:09,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-12-13 14:29:09,885 INFO L413 NwaCegarLoop]: 530 mSDtfsCounter, 124 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:09,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1972 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:29:09,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-12-13 14:29:09,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 423. [2022-12-13 14:29:09,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-12-13 14:29:09,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 636 transitions. [2022-12-13 14:29:09,914 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 636 transitions. Word has length 151 [2022-12-13 14:29:09,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:09,914 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 636 transitions. [2022-12-13 14:29:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:09,914 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 636 transitions. [2022-12-13 14:29:09,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-12-13 14:29:09,918 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:09,918 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:09,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 14:29:10,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:10,119 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:10,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash 440087637, now seen corresponding path program 1 times [2022-12-13 14:29:10,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:10,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712219898] [2022-12-13 14:29:10,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:10,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-12-13 14:29:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-12-13 14:29:10,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-12-13 14:29:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 14:29:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:29:10,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 14:29:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:29:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:29:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:29:10,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:29:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 14:29:10,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 14:29:10,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 14:29:10,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:29:10,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:10,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712219898] [2022-12-13 14:29:10,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712219898] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:10,340 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:10,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:29:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218792436] [2022-12-13 14:29:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:29:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:10,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:29:10,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:29:10,342 INFO L87 Difference]: Start difference. First operand 423 states and 636 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:12,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:12,189 INFO L93 Difference]: Finished difference Result 1007 states and 1512 transitions. [2022-12-13 14:29:12,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:29:12,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 152 [2022-12-13 14:29:12,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:12,194 INFO L225 Difference]: With dead ends: 1007 [2022-12-13 14:29:12,194 INFO L226 Difference]: Without dead ends: 607 [2022-12-13 14:29:12,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:29:12,196 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1442 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2657 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 2657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:12,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 988 Invalid, 3231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [574 Valid, 2657 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 14:29:12,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 607 states. [2022-12-13 14:29:12,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 607 to 423. [2022-12-13 14:29:12,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 423 states, 324 states have (on average 1.5) internal successors, (486), 329 states have internal predecessors, (486), 72 states have call successors, (72), 24 states have call predecessors, (72), 26 states have return successors, (77), 71 states have call predecessors, (77), 71 states have call successors, (77) [2022-12-13 14:29:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 635 transitions. [2022-12-13 14:29:12,241 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 635 transitions. Word has length 152 [2022-12-13 14:29:12,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:12,241 INFO L495 AbstractCegarLoop]: Abstraction has 423 states and 635 transitions. [2022-12-13 14:29:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 635 transitions. [2022-12-13 14:29:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-12-13 14:29:12,244 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:12,245 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:12,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 14:29:12,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:12,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:12,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1678063700, now seen corresponding path program 2 times [2022-12-13 14:29:12,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:12,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69929980] [2022-12-13 14:29:12,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:12,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 14:29:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-12-13 14:29:12,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-12-13 14:29:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 14:29:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 14:29:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 14:29:12,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 14:29:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:29:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 14:29:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 14:29:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:29:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 14:29:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 14:29:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:29:12,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:12,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69929980] [2022-12-13 14:29:12,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69929980] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:12,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:12,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 14:29:12,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209385906] [2022-12-13 14:29:12,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:29:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:29:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-12-13 14:29:12,437 INFO L87 Difference]: Start difference. First operand 423 states and 635 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:14,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:14,077 INFO L93 Difference]: Finished difference Result 1009 states and 1515 transitions. [2022-12-13 14:29:14,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 14:29:14,078 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2022-12-13 14:29:14,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:14,082 INFO L225 Difference]: With dead ends: 1009 [2022-12-13 14:29:14,082 INFO L226 Difference]: Without dead ends: 609 [2022-12-13 14:29:14,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:29:14,084 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 1368 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2753 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1385 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 3317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:14,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1385 Valid, 988 Invalid, 3317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 2753 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 14:29:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-13 14:29:14,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 425. [2022-12-13 14:29:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (79), 71 states have call predecessors, (79), 71 states have call successors, (79) [2022-12-13 14:29:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 638 transitions. [2022-12-13 14:29:14,128 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 638 transitions. Word has length 153 [2022-12-13 14:29:14,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:14,129 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 638 transitions. [2022-12-13 14:29:14,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (21), 6 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:29:14,129 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 638 transitions. [2022-12-13 14:29:14,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-12-13 14:29:14,132 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:14,132 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:14,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 14:29:14,132 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:14,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:14,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1058089648, now seen corresponding path program 1 times [2022-12-13 14:29:14,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:14,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822524155] [2022-12-13 14:29:14,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:14,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:14,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:14,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:14,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-12-13 14:29:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-12-13 14:29:14,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:29:14,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:29:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 14:29:14,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 14:29:14,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 14:29:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 14:29:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:29:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:14,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 14:29:14,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:29:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 14:29:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 14:29:14,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822524155] [2022-12-13 14:29:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822524155] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:14,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:14,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 14:29:14,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225056677] [2022-12-13 14:29:14,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:14,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:29:14,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:14,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:29:14,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:29:14,325 INFO L87 Difference]: Start difference. First operand 425 states and 638 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:29:16,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:16,268 INFO L93 Difference]: Finished difference Result 1007 states and 1510 transitions. [2022-12-13 14:29:16,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:29:16,269 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 154 [2022-12-13 14:29:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:16,273 INFO L225 Difference]: With dead ends: 1007 [2022-12-13 14:29:16,273 INFO L226 Difference]: Without dead ends: 609 [2022-12-13 14:29:16,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:29:16,276 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1631 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4118 mSolverCounterSat, 636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 4118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:16,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 1290 Invalid, 4754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [636 Valid, 4118 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 14:29:16,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-12-13 14:29:16,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 425. [2022-12-13 14:29:16,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 325 states have (on average 1.4984615384615385) internal successors, (487), 331 states have internal predecessors, (487), 72 states have call successors, (72), 24 states have call predecessors, (72), 27 states have return successors, (78), 71 states have call predecessors, (78), 71 states have call successors, (78) [2022-12-13 14:29:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 637 transitions. [2022-12-13 14:29:16,322 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 637 transitions. Word has length 154 [2022-12-13 14:29:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:16,323 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 637 transitions. [2022-12-13 14:29:16,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:29:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 637 transitions. [2022-12-13 14:29:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-13 14:29:16,326 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:16,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:16,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 14:29:16,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:16,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:16,327 INFO L85 PathProgramCache]: Analyzing trace with hash -646811012, now seen corresponding path program 2 times [2022-12-13 14:29:16,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:16,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534851475] [2022-12-13 14:29:16,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:16,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 14:29:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 14:29:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:29:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:29:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:29:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:29:16,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:29:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 14:29:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:29:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 14:29:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 14:29:16,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 14:29:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:16,547 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-12-13 14:29:16,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:16,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534851475] [2022-12-13 14:29:16,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534851475] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:16,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:16,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-12-13 14:29:16,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004292148] [2022-12-13 14:29:16,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:16,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:29:16,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:16,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:29:16,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:29:16,549 INFO L87 Difference]: Start difference. First operand 425 states and 637 transitions. Second operand has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:29:18,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:18,522 INFO L93 Difference]: Finished difference Result 1009 states and 1516 transitions. [2022-12-13 14:29:18,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 14:29:18,523 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 155 [2022-12-13 14:29:18,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:18,525 INFO L225 Difference]: With dead ends: 1009 [2022-12-13 14:29:18,525 INFO L226 Difference]: Without dead ends: 611 [2022-12-13 14:29:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:29:18,527 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 1567 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 4329 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 4946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 4329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 1290 Invalid, 4946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 4329 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-12-13 14:29:18,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-12-13 14:29:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 427. [2022-12-13 14:29:18,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 326 states have (on average 1.4969325153374233) internal successors, (488), 333 states have internal predecessors, (488), 72 states have call successors, (72), 24 states have call predecessors, (72), 28 states have return successors, (83), 71 states have call predecessors, (83), 71 states have call successors, (83) [2022-12-13 14:29:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 643 transitions. [2022-12-13 14:29:18,562 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 643 transitions. Word has length 155 [2022-12-13 14:29:18,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:18,562 INFO L495 AbstractCegarLoop]: Abstraction has 427 states and 643 transitions. [2022-12-13 14:29:18,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.818181818181818) internal successors, (97), 8 states have internal predecessors, (97), 4 states have call successors, (21), 6 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:29:18,562 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 643 transitions. [2022-12-13 14:29:18,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-13 14:29:18,564 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:18,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:18,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 14:29:18,564 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:18,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash 396315691, now seen corresponding path program 1 times [2022-12-13 14:29:18,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:18,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963550554] [2022-12-13 14:29:18,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:18,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:18,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:18,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:18,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-12-13 14:29:18,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 14:29:18,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:29:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:29:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 14:29:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:29:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 14:29:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 14:29:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 14:29:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:18,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:29:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 14:29:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 14:29:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,679 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:18,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963550554] [2022-12-13 14:29:18,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963550554] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:29:18,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285688269] [2022-12-13 14:29:18,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:18,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:29:18,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:29:18,680 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:29:18,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 14:29:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:18,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 1247 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 14:29:18,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:29:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:18,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:29:18,961 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:18,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285688269] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:29:18,961 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:29:18,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2022-12-13 14:29:18,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881972072] [2022-12-13 14:29:18,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:29:18,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-13 14:29:18,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:18,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-13 14:29:18,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-12-13 14:29:18,963 INFO L87 Difference]: Start difference. First operand 427 states and 643 transitions. Second operand has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 14:29:20,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:20,418 INFO L93 Difference]: Finished difference Result 1178 states and 1844 transitions. [2022-12-13 14:29:20,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:29:20,418 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 156 [2022-12-13 14:29:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:20,422 INFO L225 Difference]: With dead ends: 1178 [2022-12-13 14:29:20,422 INFO L226 Difference]: Without dead ends: 963 [2022-12-13 14:29:20,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:29:20,423 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 1809 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 1928 mSolverCounterSat, 746 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 2674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 746 IncrementalHoareTripleChecker+Valid, 1928 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:20,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 1466 Invalid, 2674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [746 Valid, 1928 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 14:29:20,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-12-13 14:29:20,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 755. [2022-12-13 14:29:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 590 states have (on average 1.5694915254237287) internal successors, (926), 597 states have internal predecessors, (926), 136 states have call successors, (136), 24 states have call predecessors, (136), 28 states have return successors, (157), 135 states have call predecessors, (157), 135 states have call successors, (157) [2022-12-13 14:29:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1219 transitions. [2022-12-13 14:29:20,476 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1219 transitions. Word has length 156 [2022-12-13 14:29:20,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:20,476 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1219 transitions. [2022-12-13 14:29:20,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.727272727272727) internal successors, (140), 7 states have internal predecessors, (140), 2 states have call successors, (43), 6 states have call predecessors, (43), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-12-13 14:29:20,477 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1219 transitions. [2022-12-13 14:29:20,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-13 14:29:20,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:20,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:20,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 14:29:20,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-13 14:29:20,680 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:20,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:20,681 INFO L85 PathProgramCache]: Analyzing trace with hash 2001383790, now seen corresponding path program 1 times [2022-12-13 14:29:20,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:20,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642927104] [2022-12-13 14:29:20,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:20,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:20,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-12-13 14:29:20,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 14:29:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:29:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 14:29:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 14:29:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 14:29:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 14:29:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:29:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 14:29:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:20,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 14:29:20,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 14:29:20,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:29:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:20,773 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:20,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:20,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642927104] [2022-12-13 14:29:20,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642927104] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:20,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:20,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:20,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599634029] [2022-12-13 14:29:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:20,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:20,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:20,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:20,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:20,774 INFO L87 Difference]: Start difference. First operand 755 states and 1219 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:22,085 INFO L93 Difference]: Finished difference Result 1959 states and 3215 transitions. [2022-12-13 14:29:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:22,085 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2022-12-13 14:29:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:22,090 INFO L225 Difference]: With dead ends: 1959 [2022-12-13 14:29:22,090 INFO L226 Difference]: Without dead ends: 1272 [2022-12-13 14:29:22,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:22,092 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 1449 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1544 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1464 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:22,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1464 Valid, 854 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1544 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1272 states. [2022-12-13 14:29:22,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1272 to 1080. [2022-12-13 14:29:22,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1080 states, 851 states have (on average 1.5875440658049353) internal successors, (1351), 858 states have internal predecessors, (1351), 200 states have call successors, (200), 24 states have call predecessors, (200), 28 states have return successors, (231), 199 states have call predecessors, (231), 199 states have call successors, (231) [2022-12-13 14:29:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1080 states to 1080 states and 1782 transitions. [2022-12-13 14:29:22,154 INFO L78 Accepts]: Start accepts. Automaton has 1080 states and 1782 transitions. Word has length 162 [2022-12-13 14:29:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:22,154 INFO L495 AbstractCegarLoop]: Abstraction has 1080 states and 1782 transitions. [2022-12-13 14:29:22,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1080 states and 1782 transitions. [2022-12-13 14:29:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 14:29:22,158 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:22,158 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:22,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 14:29:22,158 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:22,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2015658466, now seen corresponding path program 1 times [2022-12-13 14:29:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:22,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664019135] [2022-12-13 14:29:22,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:22,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:22,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-12-13 14:29:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:29:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:29:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 14:29:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:29:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 14:29:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 14:29:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:29:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 14:29:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-12-13 14:29:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 14:29:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 14:29:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:22,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:22,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664019135] [2022-12-13 14:29:22,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664019135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:22,253 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:22,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:22,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856269014] [2022-12-13 14:29:22,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:22,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:22,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:22,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:22,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:22,254 INFO L87 Difference]: Start difference. First operand 1080 states and 1782 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:23,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:23,644 INFO L93 Difference]: Finished difference Result 2739 states and 4564 transitions. [2022-12-13 14:29:23,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:23,644 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 163 [2022-12-13 14:29:23,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:23,649 INFO L225 Difference]: With dead ends: 2739 [2022-12-13 14:29:23,649 INFO L226 Difference]: Without dead ends: 1780 [2022-12-13 14:29:23,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:23,652 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 1439 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1553 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 2179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:23,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 856 Invalid, 2179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1553 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:23,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2022-12-13 14:29:23,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1588. [2022-12-13 14:29:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1588 states, 1264 states have (on average 1.5996835443037976) internal successors, (2022), 1271 states have internal predecessors, (2022), 295 states have call successors, (295), 24 states have call predecessors, (295), 28 states have return successors, (326), 294 states have call predecessors, (326), 294 states have call successors, (326) [2022-12-13 14:29:23,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1588 states to 1588 states and 2643 transitions. [2022-12-13 14:29:23,798 INFO L78 Accepts]: Start accepts. Automaton has 1588 states and 2643 transitions. Word has length 163 [2022-12-13 14:29:23,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:23,798 INFO L495 AbstractCegarLoop]: Abstraction has 1588 states and 2643 transitions. [2022-12-13 14:29:23,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:23,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1588 states and 2643 transitions. [2022-12-13 14:29:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-12-13 14:29:23,806 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:23,806 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:23,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 14:29:23,806 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:23,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:23,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1052997964, now seen corresponding path program 1 times [2022-12-13 14:29:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:23,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675975287] [2022-12-13 14:29:23,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:23,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:23,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:23,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:23,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-12-13 14:29:23,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:29:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:29:23,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 14:29:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 14:29:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:29:23,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:29:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 14:29:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 14:29:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-12-13 14:29:23,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 14:29:23,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 14:29:23,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:23,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:23,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675975287] [2022-12-13 14:29:23,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675975287] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:23,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:23,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:23,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107733371] [2022-12-13 14:29:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:23,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:23,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:23,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:23,925 INFO L87 Difference]: Start difference. First operand 1588 states and 2643 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:25,053 INFO L93 Difference]: Finished difference Result 3891 states and 6573 transitions. [2022-12-13 14:29:25,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:25,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 164 [2022-12-13 14:29:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:25,061 INFO L225 Difference]: With dead ends: 3891 [2022-12-13 14:29:25,061 INFO L226 Difference]: Without dead ends: 2549 [2022-12-13 14:29:25,064 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:25,064 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1410 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1425 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 634 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:25,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1425 Valid, 827 Invalid, 2175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [634 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 14:29:25,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2549 states. [2022-12-13 14:29:25,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2549 to 2357. [2022-12-13 14:29:25,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2357 states, 1910 states have (on average 1.6089005235602094) internal successors, (3073), 1917 states have internal predecessors, (3073), 418 states have call successors, (418), 24 states have call predecessors, (418), 28 states have return successors, (465), 417 states have call predecessors, (465), 417 states have call successors, (465) [2022-12-13 14:29:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2357 states to 2357 states and 3956 transitions. [2022-12-13 14:29:25,195 INFO L78 Accepts]: Start accepts. Automaton has 2357 states and 3956 transitions. Word has length 164 [2022-12-13 14:29:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:25,196 INFO L495 AbstractCegarLoop]: Abstraction has 2357 states and 3956 transitions. [2022-12-13 14:29:25,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 2357 states and 3956 transitions. [2022-12-13 14:29:25,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-12-13 14:29:25,202 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:25,203 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:25,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 14:29:25,203 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:25,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:25,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1041163809, now seen corresponding path program 1 times [2022-12-13 14:29:25,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:25,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012911749] [2022-12-13 14:29:25,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:25,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:25,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:25,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-12-13 14:29:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:29:25,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:29:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 14:29:25,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 14:29:25,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 14:29:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:29:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 14:29:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-12-13 14:29:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-12-13 14:29:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 14:29:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 14:29:25,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:25,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:25,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:25,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012911749] [2022-12-13 14:29:25,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012911749] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:25,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:25,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:25,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153276959] [2022-12-13 14:29:25,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:25,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:25,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:25,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:25,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:25,290 INFO L87 Difference]: Start difference. First operand 2357 states and 3956 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:26,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:26,825 INFO L93 Difference]: Finished difference Result 5685 states and 9707 transitions. [2022-12-13 14:29:26,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:26,825 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 165 [2022-12-13 14:29:26,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:26,836 INFO L225 Difference]: With dead ends: 5685 [2022-12-13 14:29:26,836 INFO L226 Difference]: Without dead ends: 3778 [2022-12-13 14:29:26,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:26,840 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 1398 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 617 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 617 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:26,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 827 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [617 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-12-13 14:29:26,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3778 states. [2022-12-13 14:29:27,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3778 to 3586. [2022-12-13 14:29:27,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 2960 states have (on average 1.614864864864865) internal successors, (4780), 2967 states have internal predecessors, (4780), 597 states have call successors, (597), 24 states have call predecessors, (597), 28 states have return successors, (670), 596 states have call predecessors, (670), 596 states have call successors, (670) [2022-12-13 14:29:27,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 6047 transitions. [2022-12-13 14:29:27,099 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 6047 transitions. Word has length 165 [2022-12-13 14:29:27,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:27,099 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 6047 transitions. [2022-12-13 14:29:27,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:27,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 6047 transitions. [2022-12-13 14:29:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-12-13 14:29:27,108 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:27,108 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:27,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 14:29:27,109 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:27,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:27,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1645480624, now seen corresponding path program 1 times [2022-12-13 14:29:27,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:27,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041970413] [2022-12-13 14:29:27,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:27,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:27,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:27,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-12-13 14:29:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:29:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-12-13 14:29:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:29:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:29:27,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-12-13 14:29:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:29:27,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 14:29:27,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 14:29:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-12-13 14:29:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-12-13 14:29:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 14:29:27,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:27,200 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:27,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:27,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041970413] [2022-12-13 14:29:27,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041970413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:27,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:27,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:27,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744677905] [2022-12-13 14:29:27,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:27,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:27,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:27,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:27,201 INFO L87 Difference]: Start difference. First operand 3586 states and 6047 transitions. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:28,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:28,739 INFO L93 Difference]: Finished difference Result 8633 states and 14854 transitions. [2022-12-13 14:29:28,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:28,739 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 166 [2022-12-13 14:29:28,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:28,755 INFO L225 Difference]: With dead ends: 8633 [2022-12-13 14:29:28,755 INFO L226 Difference]: Without dead ends: 5809 [2022-12-13 14:29:28,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:28,760 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1348 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 2273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:28,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 838 Invalid, 2273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 1632 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2022-12-13 14:29:29,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5617. [2022-12-13 14:29:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5617 states, 4615 states have (on average 1.610400866738895) internal successors, (7432), 4622 states have internal predecessors, (7432), 973 states have call successors, (973), 24 states have call predecessors, (973), 28 states have return successors, (1090), 972 states have call predecessors, (1090), 972 states have call successors, (1090) [2022-12-13 14:29:29,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5617 states to 5617 states and 9495 transitions. [2022-12-13 14:29:29,076 INFO L78 Accepts]: Start accepts. Automaton has 5617 states and 9495 transitions. Word has length 166 [2022-12-13 14:29:29,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:29,077 INFO L495 AbstractCegarLoop]: Abstraction has 5617 states and 9495 transitions. [2022-12-13 14:29:29,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:29,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5617 states and 9495 transitions. [2022-12-13 14:29:29,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-13 14:29:29,089 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:29,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:29,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 14:29:29,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:29,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:29,090 INFO L85 PathProgramCache]: Analyzing trace with hash -769511907, now seen corresponding path program 1 times [2022-12-13 14:29:29,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:29,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472273314] [2022-12-13 14:29:29,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:29,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:29,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:29,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-12-13 14:29:29,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:29:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 14:29:29,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:29:29,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:29:29,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 14:29:29,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-12-13 14:29:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 14:29:29,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:29:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-12-13 14:29:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 14:29:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-12-13 14:29:29,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:29,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472273314] [2022-12-13 14:29:29,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472273314] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:29,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:29,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:29,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321425515] [2022-12-13 14:29:29,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:29,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:29,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:29,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:29,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:29,166 INFO L87 Difference]: Start difference. First operand 5617 states and 9495 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:30,949 INFO L93 Difference]: Finished difference Result 13970 states and 24075 transitions. [2022-12-13 14:29:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:30,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 167 [2022-12-13 14:29:30,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:30,975 INFO L225 Difference]: With dead ends: 13970 [2022-12-13 14:29:30,975 INFO L226 Difference]: Without dead ends: 9492 [2022-12-13 14:29:30,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:30,984 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 1437 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 638 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1452 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 638 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:30,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1452 Valid, 830 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [638 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:30,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9492 states. [2022-12-13 14:29:31,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9492 to 9300. [2022-12-13 14:29:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9300 states, 7692 states have (on average 1.609204368174727) internal successors, (12378), 7699 states have internal predecessors, (12378), 1579 states have call successors, (1579), 24 states have call predecessors, (1579), 28 states have return successors, (1774), 1578 states have call predecessors, (1774), 1578 states have call successors, (1774) [2022-12-13 14:29:31,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9300 states to 9300 states and 15731 transitions. [2022-12-13 14:29:31,594 INFO L78 Accepts]: Start accepts. Automaton has 9300 states and 15731 transitions. Word has length 167 [2022-12-13 14:29:31,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:31,594 INFO L495 AbstractCegarLoop]: Abstraction has 9300 states and 15731 transitions. [2022-12-13 14:29:31,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:31,595 INFO L276 IsEmpty]: Start isEmpty. Operand 9300 states and 15731 transitions. [2022-12-13 14:29:31,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-12-13 14:29:31,614 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:31,614 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 14:29:31,615 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:31,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -550902942, now seen corresponding path program 1 times [2022-12-13 14:29:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:31,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610140300] [2022-12-13 14:29:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:31,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:31,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:31,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:31,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-12-13 14:29:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:29:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-12-13 14:29:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-12-13 14:29:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:29:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-12-13 14:29:31,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:29:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 14:29:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 14:29:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-12-13 14:29:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:29:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 14:29:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:31,696 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:31,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610140300] [2022-12-13 14:29:31,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610140300] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:31,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:31,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:31,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56593804] [2022-12-13 14:29:31,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:31,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:31,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:31,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:31,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:31,698 INFO L87 Difference]: Start difference. First operand 9300 states and 15731 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:33,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:33,892 INFO L93 Difference]: Finished difference Result 24154 states and 41621 transitions. [2022-12-13 14:29:33,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:33,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 168 [2022-12-13 14:29:33,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:33,930 INFO L225 Difference]: With dead ends: 24154 [2022-12-13 14:29:33,931 INFO L226 Difference]: Without dead ends: 16445 [2022-12-13 14:29:33,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:33,944 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1335 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 2284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:33,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 846 Invalid, 2284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [604 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:33,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16445 states. [2022-12-13 14:29:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16445 to 16253. [2022-12-13 14:29:34,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16253 states, 13442 states have (on average 1.6009522392501117) internal successors, (21520), 13449 states have internal predecessors, (21520), 2782 states have call successors, (2782), 24 states have call predecessors, (2782), 28 states have return successors, (3121), 2781 states have call predecessors, (3121), 2781 states have call successors, (3121) [2022-12-13 14:29:34,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16253 states to 16253 states and 27423 transitions. [2022-12-13 14:29:34,987 INFO L78 Accepts]: Start accepts. Automaton has 16253 states and 27423 transitions. Word has length 168 [2022-12-13 14:29:34,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:34,987 INFO L495 AbstractCegarLoop]: Abstraction has 16253 states and 27423 transitions. [2022-12-13 14:29:34,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:34,987 INFO L276 IsEmpty]: Start isEmpty. Operand 16253 states and 27423 transitions. [2022-12-13 14:29:35,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-12-13 14:29:35,026 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:35,026 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:35,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 14:29:35,026 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:35,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:35,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1187142340, now seen corresponding path program 1 times [2022-12-13 14:29:35,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:35,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885826923] [2022-12-13 14:29:35,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:35,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-12-13 14:29:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:29:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-12-13 14:29:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-12-13 14:29:35,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:29:35,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-12-13 14:29:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:29:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:29:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-12-13 14:29:35,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-12-13 14:29:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 14:29:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 14:29:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:35,111 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:35,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:35,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885826923] [2022-12-13 14:29:35,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885826923] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:35,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:35,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:35,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194207808] [2022-12-13 14:29:35,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:35,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:35,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:35,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:35,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:35,113 INFO L87 Difference]: Start difference. First operand 16253 states and 27423 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:38,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:38,344 INFO L93 Difference]: Finished difference Result 43120 states and 74220 transitions. [2022-12-13 14:29:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:38,344 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 169 [2022-12-13 14:29:38,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:38,437 INFO L225 Difference]: With dead ends: 43120 [2022-12-13 14:29:38,437 INFO L226 Difference]: Without dead ends: 29100 [2022-12-13 14:29:38,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:38,463 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1331 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 619 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1346 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 2261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 619 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:38,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1346 Valid, 832 Invalid, 2261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [619 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:38,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29100 states. [2022-12-13 14:29:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29100 to 28908. [2022-12-13 14:29:40,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28908 states, 24058 states have (on average 1.597140244409344) internal successors, (38424), 24065 states have internal predecessors, (38424), 4821 states have call successors, (4821), 24 states have call predecessors, (4821), 28 states have return successors, (5434), 4820 states have call predecessors, (5434), 4820 states have call successors, (5434) [2022-12-13 14:29:40,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28908 states to 28908 states and 48679 transitions. [2022-12-13 14:29:40,101 INFO L78 Accepts]: Start accepts. Automaton has 28908 states and 48679 transitions. Word has length 169 [2022-12-13 14:29:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:40,102 INFO L495 AbstractCegarLoop]: Abstraction has 28908 states and 48679 transitions. [2022-12-13 14:29:40,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:40,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28908 states and 48679 transitions. [2022-12-13 14:29:40,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-12-13 14:29:40,146 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:40,146 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:40,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 14:29:40,146 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:40,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:40,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1404651904, now seen corresponding path program 1 times [2022-12-13 14:29:40,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:40,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933286036] [2022-12-13 14:29:40,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:40,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:40,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:40,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:40,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-12-13 14:29:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-12-13 14:29:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 14:29:40,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-12-13 14:29:40,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-12-13 14:29:40,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 14:29:40,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-12-13 14:29:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-12-13 14:29:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-12-13 14:29:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-12-13 14:29:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 14:29:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 14:29:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:40,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933286036] [2022-12-13 14:29:40,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933286036] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:40,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:40,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:40,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111436539] [2022-12-13 14:29:40,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:40,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:40,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:40,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:40,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:40,230 INFO L87 Difference]: Start difference. First operand 28908 states and 48679 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:44,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:44,714 INFO L93 Difference]: Finished difference Result 78882 states and 134979 transitions. [2022-12-13 14:29:44,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:44,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 170 [2022-12-13 14:29:44,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:44,847 INFO L225 Difference]: With dead ends: 78882 [2022-12-13 14:29:44,848 INFO L226 Difference]: Without dead ends: 52979 [2022-12-13 14:29:44,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:44,898 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 1356 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 626 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 626 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:44,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 857 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [626 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 14:29:44,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52979 states. [2022-12-13 14:29:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52979 to 52787. [2022-12-13 14:29:48,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52787 states, 44222 states have (on average 1.5918095065804352) internal successors, (70393), 44229 states have internal predecessors, (70393), 8536 states have call successors, (8536), 24 states have call predecessors, (8536), 28 states have return successors, (9681), 8535 states have call predecessors, (9681), 8535 states have call successors, (9681) [2022-12-13 14:29:48,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52787 states to 52787 states and 88610 transitions. [2022-12-13 14:29:48,377 INFO L78 Accepts]: Start accepts. Automaton has 52787 states and 88610 transitions. Word has length 170 [2022-12-13 14:29:48,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:29:48,377 INFO L495 AbstractCegarLoop]: Abstraction has 52787 states and 88610 transitions. [2022-12-13 14:29:48,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 52787 states and 88610 transitions. [2022-12-13 14:29:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-13 14:29:48,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:29:48,447 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:29:48,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 14:29:48,447 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:29:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:29:48,448 INFO L85 PathProgramCache]: Analyzing trace with hash 867568476, now seen corresponding path program 1 times [2022-12-13 14:29:48,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:29:48,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007817970] [2022-12-13 14:29:48,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:29:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:29:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:29:48,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:29:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:29:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:29:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:29:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:29:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 14:29:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 14:29:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-12-13 14:29:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-12-13 14:29:48,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-12-13 14:29:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-12-13 14:29:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-12-13 14:29:48,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 14:29:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-12-13 14:29:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:29:48,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-12-13 14:29:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-12-13 14:29:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-12-13 14:29:48,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:29:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-13 14:29:48,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:29:48,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007817970] [2022-12-13 14:29:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007817970] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:29:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 14:29:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 14:29:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178724036] [2022-12-13 14:29:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:29:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 14:29:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:29:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 14:29:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 14:29:48,532 INFO L87 Difference]: Start difference. First operand 52787 states and 88610 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:29:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:29:55,641 INFO L93 Difference]: Finished difference Result 98653 states and 169166 transitions. [2022-12-13 14:29:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:29:55,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 171 [2022-12-13 14:29:55,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:29:55,920 INFO L225 Difference]: With dead ends: 98653 [2022-12-13 14:29:55,920 INFO L226 Difference]: Without dead ends: 98438 [2022-12-13 14:29:55,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:29:55,954 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 1356 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 633 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:29:55,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1371 Valid, 832 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 1609 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-13 14:29:56,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98438 states. [2022-12-13 14:30:01,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98438 to 98246. [2022-12-13 14:30:01,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98246 states, 82882 states have (on average 1.58494003523081) internal successors, (131363), 82889 states have internal predecessors, (131363), 15335 states have call successors, (15335), 24 states have call predecessors, (15335), 28 states have return successors, (17526), 15334 states have call predecessors, (17526), 15334 states have call successors, (17526) [2022-12-13 14:30:01,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98246 states to 98246 states and 164224 transitions. [2022-12-13 14:30:01,999 INFO L78 Accepts]: Start accepts. Automaton has 98246 states and 164224 transitions. Word has length 171 [2022-12-13 14:30:01,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:30:01,999 INFO L495 AbstractCegarLoop]: Abstraction has 98246 states and 164224 transitions. [2022-12-13 14:30:01,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (21), 6 states have call predecessors, (21), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:30:01,999 INFO L276 IsEmpty]: Start isEmpty. Operand 98246 states and 164224 transitions. [2022-12-13 14:30:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-12-13 14:30:02,235 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:30:02,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:30:02,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 14:30:02,235 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:30:02,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:30:02,235 INFO L85 PathProgramCache]: Analyzing trace with hash 492317665, now seen corresponding path program 1 times [2022-12-13 14:30:02,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:30:02,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982795743] [2022-12-13 14:30:02,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:30:02,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:30:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:30:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:30:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:30:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:30:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:30:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:30:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:30:02,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:30:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 14:30:02,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-12-13 14:30:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-12-13 14:30:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 14:30:02,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-12-13 14:30:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-12-13 14:30:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-12-13 14:30:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:30:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-12-13 14:30:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-12-13 14:30:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-12-13 14:30:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,532 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:30:02,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:30:02,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982795743] [2022-12-13 14:30:02,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982795743] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:30:02,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717925631] [2022-12-13 14:30:02,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:30:02,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:30:02,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:30:02,534 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:30:02,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 14:30:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:30:02,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 14:30:02,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:30:02,895 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-13 14:30:02,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:30:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-12-13 14:30:03,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [717925631] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 14:30:03,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-13 14:30:03,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 9] total 32 [2022-12-13 14:30:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290674329] [2022-12-13 14:30:03,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-13 14:30:03,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-13 14:30:03,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:30:03,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-13 14:30:03,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2022-12-13 14:30:03,158 INFO L87 Difference]: Start difference. First operand 98246 states and 164224 transitions. Second operand has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2022-12-13 14:31:06,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:31:06,077 INFO L93 Difference]: Finished difference Result 589520 states and 1034102 transitions. [2022-12-13 14:31:06,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2022-12-13 14:31:06,078 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) Word has length 172 [2022-12-13 14:31:06,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:31:08,683 INFO L225 Difference]: With dead ends: 589520 [2022-12-13 14:31:08,683 INFO L226 Difference]: Without dead ends: 589309 [2022-12-13 14:31:08,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 403 SyntacticMatches, 0 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12554 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4333, Invalid=31199, Unknown=0, NotChecked=0, Total=35532 [2022-12-13 14:31:08,882 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 7817 mSDsluCounter, 11931 mSDsCounter, 0 mSdLazyCounter, 54218 mSolverCounterSat, 9678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7841 SdHoareTripleChecker+Valid, 12559 SdHoareTripleChecker+Invalid, 63896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9678 IncrementalHoareTripleChecker+Valid, 54218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-12-13 14:31:08,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7841 Valid, 12559 Invalid, 63896 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9678 Valid, 54218 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2022-12-13 14:31:09,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589309 states. [2022-12-13 14:31:42,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589309 to 391709. [2022-12-13 14:31:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391709 states, 330530 states have (on average 1.5855020724291289) internal successors, (524056), 330344 states have internal predecessors, (524056), 61020 states have call successors, (61020), 132 states have call predecessors, (61020), 158 states have return successors, (85000), 61248 states have call predecessors, (85000), 61014 states have call successors, (85000) [2022-12-13 14:31:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391709 states to 391709 states and 670076 transitions. [2022-12-13 14:31:44,699 INFO L78 Accepts]: Start accepts. Automaton has 391709 states and 670076 transitions. Word has length 172 [2022-12-13 14:31:44,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:31:44,699 INFO L495 AbstractCegarLoop]: Abstraction has 391709 states and 670076 transitions. [2022-12-13 14:31:44,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 8.866666666666667) internal successors, (266), 24 states have internal predecessors, (266), 9 states have call successors, (54), 12 states have call predecessors, (54), 12 states have return successors, (48), 11 states have call predecessors, (48), 9 states have call successors, (48) [2022-12-13 14:31:44,699 INFO L276 IsEmpty]: Start isEmpty. Operand 391709 states and 670076 transitions. [2022-12-13 14:31:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 14:31:45,218 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:31:45,218 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-12-13 14:31:45,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 14:31:45,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:31:45,419 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:31:45,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:31:45,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1038081166, now seen corresponding path program 1 times [2022-12-13 14:31:45,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:31:45,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264628853] [2022-12-13 14:31:45,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:31:45,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:31:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:31:45,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:31:45,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-12-13 14:31:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-12-13 14:31:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-12-13 14:31:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 14:31:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-12-13 14:31:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-12-13 14:31:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-12-13 14:31:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:31:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-12-13 14:31:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:31:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 14:31:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 14:31:45,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 14:31:45,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:31:45,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 14:31:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 14:31:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 14:31:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:45,579 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 14:31:45,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:31:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264628853] [2022-12-13 14:31:45,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264628853] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:31:45,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [135523703] [2022-12-13 14:31:45,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:31:45,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:31:45,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:31:45,580 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:31:45,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 14:31:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:31:46,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 14:31:46,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:31:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-12-13 14:31:46,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:31:46,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [135523703] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:31:46,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:31:46,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 14:31:46,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749928869] [2022-12-13 14:31:46,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:31:46,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:31:46,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:31:46,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:31:46,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:31:46,060 INFO L87 Difference]: Start difference. First operand 391709 states and 670076 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:32:14,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:32:14,567 INFO L93 Difference]: Finished difference Result 587569 states and 1009448 transitions. [2022-12-13 14:32:14,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:32:14,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2022-12-13 14:32:14,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:32:16,027 INFO L225 Difference]: With dead ends: 587569 [2022-12-13 14:32:16,028 INFO L226 Difference]: Without dead ends: 391725 [2022-12-13 14:32:16,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:32:16,383 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 124 mSDsluCounter, 1440 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:32:16,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 1971 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:32:16,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391725 states. [2022-12-13 14:32:47,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391725 to 391709. [2022-12-13 14:32:47,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391709 states, 330530 states have (on average 1.585496021541161) internal successors, (524054), 330344 states have internal predecessors, (524054), 61020 states have call successors, (61020), 132 states have call predecessors, (61020), 158 states have return successors, (85000), 61248 states have call predecessors, (85000), 61014 states have call successors, (85000) [2022-12-13 14:32:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391709 states to 391709 states and 670074 transitions. [2022-12-13 14:32:49,111 INFO L78 Accepts]: Start accepts. Automaton has 391709 states and 670074 transitions. Word has length 174 [2022-12-13 14:32:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:32:49,111 INFO L495 AbstractCegarLoop]: Abstraction has 391709 states and 670074 transitions. [2022-12-13 14:32:49,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-13 14:32:49,112 INFO L276 IsEmpty]: Start isEmpty. Operand 391709 states and 670074 transitions. [2022-12-13 14:32:49,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-13 14:32:49,756 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:32:49,756 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-12-13 14:32:49,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 14:32:49,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:32:49,958 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:32:49,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:32:49,959 INFO L85 PathProgramCache]: Analyzing trace with hash 993878833, now seen corresponding path program 1 times [2022-12-13 14:32:49,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:32:49,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693368156] [2022-12-13 14:32:49,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:32:49,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:32:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:32:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:32:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-12-13 14:32:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-12-13 14:32:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-12-13 14:32:50,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 14:32:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-12-13 14:32:50,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-12-13 14:32:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-12-13 14:32:50,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-12-13 14:32:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 14:32:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-12-13 14:32:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-12-13 14:32:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-12-13 14:32:50,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-12-13 14:32:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:32:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-12-13 14:32:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-12-13 14:32:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-12-13 14:32:50,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 14:32:50,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:32:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693368156] [2022-12-13 14:32:50,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693368156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:32:50,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845946786] [2022-12-13 14:32:50,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:32:50,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:32:50,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:32:50,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:32:50,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-13 14:32:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:32:50,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 1318 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-13 14:32:50,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:32:50,496 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 14:32:50,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:32:50,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845946786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:32:50,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:32:50,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-12-13 14:32:50,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734060049] [2022-12-13 14:32:50,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:32:50,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:32:50,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:32:50,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:32:50,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-12-13 14:32:50,497 INFO L87 Difference]: Start difference. First operand 391709 states and 670074 transitions. Second operand has 9 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:33:18,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:33:18,951 INFO L93 Difference]: Finished difference Result 394197 states and 673691 transitions. [2022-12-13 14:33:18,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 14:33:18,952 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 174 [2022-12-13 14:33:18,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:33:20,392 INFO L225 Difference]: With dead ends: 394197 [2022-12-13 14:33:20,392 INFO L226 Difference]: Without dead ends: 392257 [2022-12-13 14:33:20,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=575, Unknown=0, NotChecked=0, Total=650 [2022-12-13 14:33:20,513 INFO L413 NwaCegarLoop]: 526 mSDtfsCounter, 833 mSDsluCounter, 3129 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 3655 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:33:20,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 3655 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:33:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392257 states. [2022-12-13 14:33:52,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392257 to 392135. [2022-12-13 14:33:53,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392135 states, 330816 states have (on average 1.585316308763784) internal successors, (524448), 330644 states have internal predecessors, (524448), 61154 states have call successors, (61154), 138 states have call predecessors, (61154), 164 states have return successors, (85170), 61380 states have call predecessors, (85170), 61148 states have call successors, (85170) [2022-12-13 14:33:54,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392135 states to 392135 states and 670772 transitions. [2022-12-13 14:33:54,421 INFO L78 Accepts]: Start accepts. Automaton has 392135 states and 670772 transitions. Word has length 174 [2022-12-13 14:33:54,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:33:54,422 INFO L495 AbstractCegarLoop]: Abstraction has 392135 states and 670772 transitions. [2022-12-13 14:33:54,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 4 states have call successors, (21), 5 states have call predecessors, (21), 4 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:33:54,422 INFO L276 IsEmpty]: Start isEmpty. Operand 392135 states and 670772 transitions. [2022-12-13 14:33:55,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 14:33:55,070 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:33:55,070 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:33:55,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-13 14:33:55,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:33:55,272 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:33:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:33:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1205231046, now seen corresponding path program 1 times [2022-12-13 14:33:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:33:55,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651928181] [2022-12-13 14:33:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:33:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:33:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:33:55,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:33:55,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:33:55,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:33:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:33:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:33:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:33:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:33:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:33:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:33:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:33:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:33:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:33:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:33:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:33:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:33:55,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:33:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 14:33:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 14:33:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:33:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:33:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651928181] [2022-12-13 14:33:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651928181] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:33:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383600699] [2022-12-13 14:33:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:33:55,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:33:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:33:55,431 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:33:55,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-13 14:33:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:33:55,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 14:33:55,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:33:55,678 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 14:33:55,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:33:55,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383600699] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:33:55,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:33:55,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-12-13 14:33:55,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690124837] [2022-12-13 14:33:55,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:33:55,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 14:33:55,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:33:55,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 14:33:55,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2022-12-13 14:33:55,679 INFO L87 Difference]: Start difference. First operand 392135 states and 670772 transitions. Second operand has 10 states, 8 states have (on average 14.875) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 14:34:24,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:34:24,273 INFO L93 Difference]: Finished difference Result 393825 states and 673228 transitions. [2022-12-13 14:34:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 14:34:24,274 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 14.875) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) Word has length 175 [2022-12-13 14:34:24,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:34:25,590 INFO L225 Difference]: With dead ends: 393825 [2022-12-13 14:34:25,591 INFO L226 Difference]: Without dead ends: 392149 [2022-12-13 14:34:25,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2022-12-13 14:34:25,716 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 313 mSDsluCounter, 4123 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 4672 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 14:34:25,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 4672 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 14:34:25,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392149 states. [2022-12-13 14:34:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392149 to 392147. [2022-12-13 14:34:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392147 states, 330822 states have (on average 1.5853056930917533) internal successors, (524454), 330656 states have internal predecessors, (524454), 61154 states have call successors, (61154), 138 states have call predecessors, (61154), 170 states have return successors, (85200), 61380 states have call predecessors, (85200), 61148 states have call successors, (85200) [2022-12-13 14:35:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392147 states to 392147 states and 670808 transitions. [2022-12-13 14:35:00,178 INFO L78 Accepts]: Start accepts. Automaton has 392147 states and 670808 transitions. Word has length 175 [2022-12-13 14:35:00,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:35:00,178 INFO L495 AbstractCegarLoop]: Abstraction has 392147 states and 670808 transitions. [2022-12-13 14:35:00,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 14.875) internal successors, (119), 9 states have internal predecessors, (119), 6 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 4 states have call predecessors, (19), 5 states have call successors, (19) [2022-12-13 14:35:00,179 INFO L276 IsEmpty]: Start isEmpty. Operand 392147 states and 670808 transitions. [2022-12-13 14:35:00,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 14:35:00,720 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:35:00,721 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2022-12-13 14:35:00,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-13 14:35:00,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:35:00,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:35:00,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:35:00,924 INFO L85 PathProgramCache]: Analyzing trace with hash 2798069, now seen corresponding path program 1 times [2022-12-13 14:35:00,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:35:00,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922922482] [2022-12-13 14:35:00,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:35:00,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:35:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:35:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:35:01,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:35:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:35:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:35:01,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:35:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:35:01,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:35:01,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:35:01,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:35:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-12-13 14:35:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:35:01,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:35:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:35:01,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:35:01,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:35:01,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:35:01,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 14:35:01,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 14:35:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-12-13 14:35:01,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:35:01,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922922482] [2022-12-13 14:35:01,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922922482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:35:01,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323367711] [2022-12-13 14:35:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:35:01,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:35:01,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:35:01,220 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:35:01,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-13 14:35:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:35:01,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1314 conjuncts, 19 conjunts are in the unsatisfiable core [2022-12-13 14:35:01,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:35:01,654 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-13 14:35:01,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:35:01,921 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-12-13 14:35:01,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323367711] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 14:35:01,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:35:01,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [9, 13] total 24 [2022-12-13 14:35:01,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248285784] [2022-12-13 14:35:01,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:35:01,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-13 14:35:01,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:35:01,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-13 14:35:01,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2022-12-13 14:35:01,923 INFO L87 Difference]: Start difference. First operand 392147 states and 670808 transitions. Second operand has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-13 14:35:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:35:36,190 INFO L93 Difference]: Finished difference Result 395137 states and 675214 transitions. [2022-12-13 14:35:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-13 14:35:36,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) Word has length 175 [2022-12-13 14:35:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:35:37,633 INFO L225 Difference]: With dead ends: 395137 [2022-12-13 14:35:37,633 INFO L226 Difference]: Without dead ends: 393559 [2022-12-13 14:35:37,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 364 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 14:35:37,761 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1501 mSDsluCounter, 4574 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 1159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 14:35:37,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 5189 Invalid, 1159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 14:35:38,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393559 states. [2022-12-13 14:36:15,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393559 to 392907. [2022-12-13 14:36:15,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392907 states, 331369 states have (on average 1.5849309983734146) internal successors, (525197), 331222 states have internal predecessors, (525197), 61320 states have call successors, (61320), 172 states have call predecessors, (61320), 217 states have return successors, (85425), 61550 states have call predecessors, (85425), 61312 states have call successors, (85425) [2022-12-13 14:36:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392907 states to 392907 states and 671942 transitions. [2022-12-13 14:36:16,605 INFO L78 Accepts]: Start accepts. Automaton has 392907 states and 671942 transitions. Word has length 175 [2022-12-13 14:36:16,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:36:16,605 INFO L495 AbstractCegarLoop]: Abstraction has 392907 states and 671942 transitions. [2022-12-13 14:36:16,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 6 states have call predecessors, (19), 6 states have call successors, (19) [2022-12-13 14:36:16,605 INFO L276 IsEmpty]: Start isEmpty. Operand 392907 states and 671942 transitions. [2022-12-13 14:36:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 14:36:17,317 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:36:17,317 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:36:17,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-13 14:36:17,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 14:36:17,520 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:36:17,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:36:17,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1771431359, now seen corresponding path program 1 times [2022-12-13 14:36:17,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:36:17,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381189526] [2022-12-13 14:36:17,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:36:17,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:36:17,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:36:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:36:17,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:36:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:36:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:36:17,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:36:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:36:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:36:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:36:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:36:17,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:36:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:36:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:36:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:36:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:36:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:36:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:36:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 14:36:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 14:36:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:36:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:36:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381189526] [2022-12-13 14:36:17,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381189526] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:36:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498540514] [2022-12-13 14:36:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:36:17,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:36:17,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:36:17,660 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:36:17,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-13 14:36:17,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:36:17,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 14:36:17,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:36:17,870 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-12-13 14:36:17,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:36:17,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498540514] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:36:17,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:36:17,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-12-13 14:36:17,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314507328] [2022-12-13 14:36:17,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:36:17,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 14:36:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:36:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 14:36:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-12-13 14:36:17,872 INFO L87 Difference]: Start difference. First operand 392907 states and 671942 transitions. Second operand has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:36:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:36:50,292 INFO L93 Difference]: Finished difference Result 394131 states and 673699 transitions. [2022-12-13 14:36:50,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 14:36:50,294 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 175 [2022-12-13 14:36:50,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:36:51,718 INFO L225 Difference]: With dead ends: 394131 [2022-12-13 14:36:51,718 INFO L226 Difference]: Without dead ends: 392919 [2022-12-13 14:36:51,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-12-13 14:36:51,825 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 7 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 14:36:51,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2122 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 14:36:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392919 states. [2022-12-13 14:37:28,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392919 to 392911. [2022-12-13 14:37:29,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392911 states, 331371 states have (on average 1.5849274680041403) internal successors, (525199), 331226 states have internal predecessors, (525199), 61320 states have call successors, (61320), 172 states have call predecessors, (61320), 219 states have return successors, (85425), 61550 states have call predecessors, (85425), 61312 states have call successors, (85425) [2022-12-13 14:37:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392911 states to 392911 states and 671944 transitions. [2022-12-13 14:37:30,754 INFO L78 Accepts]: Start accepts. Automaton has 392911 states and 671944 transitions. Word has length 175 [2022-12-13 14:37:30,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:37:30,755 INFO L495 AbstractCegarLoop]: Abstraction has 392911 states and 671944 transitions. [2022-12-13 14:37:30,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 28.25) internal successors, (113), 5 states have internal predecessors, (113), 3 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-12-13 14:37:30,755 INFO L276 IsEmpty]: Start isEmpty. Operand 392911 states and 671944 transitions. [2022-12-13 14:37:31,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-12-13 14:37:31,292 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:37:31,293 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:37:31,298 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-13 14:37:31,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 14:37:31,493 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:37:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:37:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1528842239, now seen corresponding path program 1 times [2022-12-13 14:37:31,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:37:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710366564] [2022-12-13 14:37:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:37:31,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:37:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:37:31,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:37:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:37:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:37:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:37:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:37:31,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:37:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:37:31,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-12-13 14:37:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-12-13 14:37:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:37:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:37:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:37:31,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-12-13 14:37:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-12-13 14:37:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:37:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-12-13 14:37:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-12-13 14:37:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-12-13 14:37:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-12-13 14:37:31,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:37:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710366564] [2022-12-13 14:37:31,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710366564] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:37:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371248879] [2022-12-13 14:37:31,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:37:31,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:37:31,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:37:31,599 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:37:31,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-13 14:37:31,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:37:31,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:37:31,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:37:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 14:37:31,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 14:37:32,323 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-12-13 14:37:32,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371248879] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-13 14:37:32,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-13 14:37:32,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 19 [2022-12-13 14:37:32,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653783341] [2022-12-13 14:37:32,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:37:32,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 14:37:32,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:37:32,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 14:37:32,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:37:32,325 INFO L87 Difference]: Start difference. First operand 392911 states and 671944 transitions. Second operand has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:38:08,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:38:08,052 INFO L93 Difference]: Finished difference Result 395507 states and 675649 transitions. [2022-12-13 14:38:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 14:38:08,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 175 [2022-12-13 14:38:08,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:38:09,534 INFO L225 Difference]: With dead ends: 395507 [2022-12-13 14:38:09,534 INFO L226 Difference]: Without dead ends: 394419 [2022-12-13 14:38:09,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 372 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=611, Unknown=0, NotChecked=0, Total=702 [2022-12-13 14:38:09,647 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 987 mSDsluCounter, 3183 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 4013 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 14:38:09,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 4013 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 14:38:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394419 states. [2022-12-13 14:38:49,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394419 to 393963. [2022-12-13 14:38:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393963 states, 332141 states have (on average 1.584426493567491) internal successors, (526253), 332010 states have internal predecessors, (526253), 61532 states have call successors, (61532), 232 states have call predecessors, (61532), 289 states have return successors, (85657), 61770 states have call predecessors, (85657), 61520 states have call successors, (85657) [2022-12-13 14:38:51,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393963 states to 393963 states and 673442 transitions. [2022-12-13 14:38:51,430 INFO L78 Accepts]: Start accepts. Automaton has 393963 states and 673442 transitions. Word has length 175 [2022-12-13 14:38:51,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 14:38:51,430 INFO L495 AbstractCegarLoop]: Abstraction has 393963 states and 673442 transitions. [2022-12-13 14:38:51,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 14.375) internal successors, (115), 8 states have internal predecessors, (115), 4 states have call successors, (21), 3 states have call predecessors, (21), 4 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-13 14:38:51,430 INFO L276 IsEmpty]: Start isEmpty. Operand 393963 states and 673442 transitions. [2022-12-13 14:38:51,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-13 14:38:51,993 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 14:38:51,993 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 14:38:51,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-12-13 14:38:52,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 14:38:52,195 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 14:38:52,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 14:38:52,196 INFO L85 PathProgramCache]: Analyzing trace with hash 2124802159, now seen corresponding path program 1 times [2022-12-13 14:38:52,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 14:38:52,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473631495] [2022-12-13 14:38:52,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:38:52,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 14:38:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-12-13 14:38:52,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 14:38:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-12-13 14:38:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 14:38:52,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-12-13 14:38:52,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-12-13 14:38:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-12-13 14:38:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-12-13 14:38:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-12-13 14:38:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-12-13 14:38:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-12-13 14:38:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-12-13 14:38:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-12-13 14:38:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 14:38:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-12-13 14:38:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 14:38:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-12-13 14:38:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-12-13 14:38:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-12-13 14:38:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,479 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-12-13 14:38:52,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 14:38:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473631495] [2022-12-13 14:38:52,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473631495] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 14:38:52,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363088195] [2022-12-13 14:38:52,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 14:38:52,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 14:38:52,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 14:38:52,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 14:38:52,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e58dbe22-7f9c-4d5a-b463-29896090d967/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-13 14:38:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 14:38:52,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 14:38:52,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 14:38:52,744 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-12-13 14:38:52,745 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 14:38:52,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363088195] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 14:38:52,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 14:38:52,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [9] total 19 [2022-12-13 14:38:52,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143257695] [2022-12-13 14:38:52,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 14:38:52,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 14:38:52,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 14:38:52,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 14:38:52,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2022-12-13 14:38:52,746 INFO L87 Difference]: Start difference. First operand 393963 states and 673442 transitions. Second operand has 12 states, 10 states have (on average 12.1) internal successors, (121), 11 states have internal predecessors, (121), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) [2022-12-13 14:39:28,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 14:39:28,540 INFO L93 Difference]: Finished difference Result 396777 states and 677426 transitions. [2022-12-13 14:39:28,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 14:39:28,542 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 12.1) internal successors, (121), 11 states have internal predecessors, (121), 8 states have call successors, (21), 3 states have call predecessors, (21), 3 states have return successors, (19), 6 states have call predecessors, (19), 7 states have call successors, (19) Word has length 176 [2022-12-13 14:39:28,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 14:39:30,030 INFO L225 Difference]: With dead ends: 396777 [2022-12-13 14:39:30,030 INFO L226 Difference]: Without dead ends: 393765 [2022-12-13 14:39:30,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-12-13 14:39:30,275 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 474 mSDsluCounter, 5049 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 5596 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 14:39:30,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [474 Valid, 5596 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 14:39:30,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393765 states.