./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa --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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:45:31,223 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:45:31,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:45:31,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:45:31,247 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:45:31,248 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:45:31,249 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:45:31,251 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:45:31,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:45:31,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:45:31,254 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:45:31,256 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:45:31,256 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:45:31,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:45:31,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:45:31,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:45:31,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:45:31,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:45:31,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:45:31,264 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:45:31,266 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:45:31,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:45:31,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:45:31,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:45:31,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:45:31,272 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:45:31,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:45:31,273 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:45:31,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:45:31,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:45:31,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:45:31,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:45:31,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:45:31,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:45:31,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:45:31,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:45:31,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:45:31,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:45:31,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:45:31,279 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:45:31,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:45:31,280 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:45:31,298 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:45:31,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:45:31,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:45:31,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:45:31,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:45:31,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:45:31,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:45:31,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:45:31,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:45:31,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:45:31,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:45:31,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:45:31,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:45:31,302 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2021-12-06 20:45:31,482 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:45:31,498 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:45:31,499 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:45:31,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:45:31,501 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:45:31,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-12-06 20:45:31,551 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/data/6248278f5/d246b3a7b95949f09e6ae2a0d13fc62b/FLAGbe0f87522 [2021-12-06 20:45:31,996 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:45:31,996 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2021-12-06 20:45:32,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/data/6248278f5/d246b3a7b95949f09e6ae2a0d13fc62b/FLAGbe0f87522 [2021-12-06 20:45:32,021 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/data/6248278f5/d246b3a7b95949f09e6ae2a0d13fc62b [2021-12-06 20:45:32,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:45:32,023 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:45:32,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:45:32,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:45:32,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:45:32,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673406a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32, skipping insertion in model container [2021-12-06 20:45:32,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:45:32,087 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:45:32,300 WARN L230 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_1b30854e-9253-4acc-8b92-fae15c4bd26c/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-12-06 20:45:32,465 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:45:32,474 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:45:32,508 WARN L230 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_1b30854e-9253-4acc-8b92-fae15c4bd26c/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c[21710,21723] [2021-12-06 20:45:32,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:45:32,601 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:45:32,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32 WrapperNode [2021-12-06 20:45:32,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:45:32,602 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:45:32,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:45:32,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:45:32,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,691 INFO L137 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 808 [2021-12-06 20:45:32,692 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:45:32,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:45:32,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:45:32,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:45:32,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,728 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,759 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:45:32,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:45:32,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:45:32,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:45:32,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (1/1) ... [2021-12-06 20:45:32,768 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:45:32,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:45:32,787 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:45:32,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-06 20:45:32,826 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-06 20:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 20:45:32,826 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 20:45:32,826 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 20:45:32,826 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 20:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-06 20:45:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-06 20:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 20:45:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 20:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 20:45:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 20:45:32,827 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 20:45:32,827 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 20:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 20:45:32,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 20:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 20:45:32,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 20:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 20:45:32,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 20:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 20:45:32,828 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 20:45:32,828 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-06 20:45:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-06 20:45:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 20:45:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 20:45:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-06 20:45:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-06 20:45:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 20:45:32,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 20:45:32,829 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 20:45:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 20:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 20:45:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 20:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 20:45:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 20:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-06 20:45:32,830 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-06 20:45:32,830 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 20:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 20:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 20:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 20:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 20:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 20:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:45:32,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:45:32,831 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 20:45:32,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 20:45:32,940 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:45:32,942 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:45:33,536 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:45:33,546 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:45:33,546 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:45:33,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:45:33 BoogieIcfgContainer [2021-12-06 20:45:33,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:45:33,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:45:33,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:45:33,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:45:33,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:45:32" (1/3) ... [2021-12-06 20:45:33,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acc5533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:45:33, skipping insertion in model container [2021-12-06 20:45:33,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:45:32" (2/3) ... [2021-12-06 20:45:33,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5acc5533 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:45:33, skipping insertion in model container [2021-12-06 20:45:33,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:45:33" (3/3) ... [2021-12-06 20:45:33,555 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2021-12-06 20:45:33,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:45:33,559 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:45:33,596 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:45:33,601 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:45:33,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:45:33,626 INFO L276 IsEmpty]: Start isEmpty. Operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2021-12-06 20:45:33,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-06 20:45:33,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:33,654 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:33,655 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:33,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1881157288, now seen corresponding path program 1 times [2021-12-06 20:45:33,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766339200] [2021-12-06 20:45:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:33,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:33,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:34,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:45:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:45:34,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 20:45:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:45:34,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:45:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:34,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:34,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:34,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766339200] [2021-12-06 20:45:34,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766339200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:34,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:34,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:45:34,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233168366] [2021-12-06 20:45:34,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:34,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:45:34,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:34,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:45:34,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:34,315 INFO L87 Difference]: Start difference. First operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:39,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:39,258 INFO L93 Difference]: Finished difference Result 1464 states and 2552 transitions. [2021-12-06 20:45:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:45:39,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2021-12-06 20:45:39,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:39,278 INFO L225 Difference]: With dead ends: 1464 [2021-12-06 20:45:39,278 INFO L226 Difference]: Without dead ends: 909 [2021-12-06 20:45:39,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:45:39,287 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 1700 mSDsluCounter, 2859 mSDsCounter, 0 mSdLazyCounter, 5122 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3805 SdHoareTripleChecker+Invalid, 5655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 5122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:39,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1803 Valid, 3805 Invalid, 5655 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [533 Valid, 5122 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-06 20:45:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2021-12-06 20:45:39,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 558. [2021-12-06 20:45:39,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 453 states have internal predecessors, (733), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2021-12-06 20:45:39,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2021-12-06 20:45:39,431 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 85 [2021-12-06 20:45:39,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:39,431 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2021-12-06 20:45:39,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:39,432 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2021-12-06 20:45:39,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 20:45:39,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:39,438 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:39,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:45:39,439 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:39,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:39,440 INFO L85 PathProgramCache]: Analyzing trace with hash 782189340, now seen corresponding path program 1 times [2021-12-06 20:45:39,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:39,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015472159] [2021-12-06 20:45:39,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:39,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:39,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:39,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:39,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:45:39,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:45:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:45:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:45:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:45:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:39,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:39,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015472159] [2021-12-06 20:45:39,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015472159] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:39,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:39,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:45:39,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850938427] [2021-12-06 20:45:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:39,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:45:39,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:45:39,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:39,759 INFO L87 Difference]: Start difference. First operand 558 states and 930 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:44,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:44,314 INFO L93 Difference]: Finished difference Result 1454 states and 2498 transitions. [2021-12-06 20:45:44,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:45:44,314 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2021-12-06 20:45:44,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:44,320 INFO L225 Difference]: With dead ends: 1454 [2021-12-06 20:45:44,320 INFO L226 Difference]: Without dead ends: 912 [2021-12-06 20:45:44,323 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:45:44,324 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 1088 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 5442 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3818 SdHoareTripleChecker+Invalid, 5771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:44,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1191 Valid, 3818 Invalid, 5771 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 5442 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 20:45:44,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2021-12-06 20:45:44,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 558. [2021-12-06 20:45:44,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 453 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2021-12-06 20:45:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 929 transitions. [2021-12-06 20:45:44,398 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 929 transitions. Word has length 86 [2021-12-06 20:45:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:44,398 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 929 transitions. [2021-12-06 20:45:44,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 929 transitions. [2021-12-06 20:45:44,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-06 20:45:44,401 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:44,401 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:44,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:45:44,401 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:44,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1830753775, now seen corresponding path program 1 times [2021-12-06 20:45:44,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:44,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45429187] [2021-12-06 20:45:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:44,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:44,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:45:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:45:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:45:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:45:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:45:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:45:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:44,631 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:44,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:44,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45429187] [2021-12-06 20:45:44,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45429187] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:44,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:44,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:45:44,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839429633] [2021-12-06 20:45:44,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:45:44,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:44,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:45:44,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:45:44,634 INFO L87 Difference]: Start difference. First operand 558 states and 929 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 20:45:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:48,206 INFO L93 Difference]: Finished difference Result 1445 states and 2478 transitions. [2021-12-06 20:45:48,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:45:48,206 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2021-12-06 20:45:48,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:48,211 INFO L225 Difference]: With dead ends: 1445 [2021-12-06 20:45:48,211 INFO L226 Difference]: Without dead ends: 872 [2021-12-06 20:45:48,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:48,215 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 2060 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 2529 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 3245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 2529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:48,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2162 Valid, 2177 Invalid, 3245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 2529 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 20:45:48,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2021-12-06 20:45:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 534. [2021-12-06 20:45:48,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.673913043478261) internal successors, (693), 430 states have internal predecessors, (693), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:45:48,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2021-12-06 20:45:48,274 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 86 [2021-12-06 20:45:48,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:48,274 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2021-12-06 20:45:48,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 20:45:48,274 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2021-12-06 20:45:48,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 20:45:48,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:48,276 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:48,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:45:48,277 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:48,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:48,277 INFO L85 PathProgramCache]: Analyzing trace with hash 273510260, now seen corresponding path program 1 times [2021-12-06 20:45:48,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:48,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509691149] [2021-12-06 20:45:48,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:48,278 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:48,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:48,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 20:45:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 20:45:48,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 20:45:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:45:48,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 20:45:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:48,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509691149] [2021-12-06 20:45:48,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509691149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:48,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:48,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:45:48,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475616527] [2021-12-06 20:45:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:48,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:45:48,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:45:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:48,537 INFO L87 Difference]: Start difference. First operand 534 states and 886 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:52,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:52,697 INFO L93 Difference]: Finished difference Result 1408 states and 2409 transitions. [2021-12-06 20:45:52,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:45:52,698 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-12-06 20:45:52,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:52,703 INFO L225 Difference]: With dead ends: 1408 [2021-12-06 20:45:52,703 INFO L226 Difference]: Without dead ends: 866 [2021-12-06 20:45:52,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:45:52,707 INFO L933 BasicCegarLoop]: 915 mSDtfsCounter, 2084 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 4934 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 3680 SdHoareTripleChecker+Invalid, 5651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 4934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:52,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2186 Valid, 3680 Invalid, 5651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 4934 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 20:45:52,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-06 20:45:52,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2021-12-06 20:45:52,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 424 states have internal predecessors, (680), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:45:52,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 873 transitions. [2021-12-06 20:45:52,776 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 873 transitions. Word has length 87 [2021-12-06 20:45:52,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:52,776 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 873 transitions. [2021-12-06 20:45:52,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:52,776 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 873 transitions. [2021-12-06 20:45:52,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 20:45:52,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:52,778 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:52,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:45:52,779 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:52,779 INFO L85 PathProgramCache]: Analyzing trace with hash 65130564, now seen corresponding path program 1 times [2021-12-06 20:45:52,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:52,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890430892] [2021-12-06 20:45:52,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:52,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:52,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:52,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 20:45:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:53,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:45:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:53,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 20:45:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:45:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:53,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:45:53,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:53,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890430892] [2021-12-06 20:45:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890430892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:53,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:53,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:45:53,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556516320] [2021-12-06 20:45:53,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:53,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:45:53,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:45:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:53,024 INFO L87 Difference]: Start difference. First operand 528 states and 873 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:57,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:45:57,277 INFO L93 Difference]: Finished difference Result 1378 states and 2358 transitions. [2021-12-06 20:45:57,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:45:57,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2021-12-06 20:45:57,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:45:57,283 INFO L225 Difference]: With dead ends: 1378 [2021-12-06 20:45:57,283 INFO L226 Difference]: Without dead ends: 866 [2021-12-06 20:45:57,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:45:57,286 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 2011 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 4830 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 5547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 4830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:45:57,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 3632 Invalid, 5547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 4830 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 20:45:57,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-06 20:45:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2021-12-06 20:45:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6642156862745099) internal successors, (679), 424 states have internal predecessors, (679), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:45:57,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 872 transitions. [2021-12-06 20:45:57,355 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 872 transitions. Word has length 88 [2021-12-06 20:45:57,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:45:57,355 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 872 transitions. [2021-12-06 20:45:57,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:45:57,355 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 872 transitions. [2021-12-06 20:45:57,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-06 20:45:57,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:45:57,357 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:45:57,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:45:57,357 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:45:57,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:45:57,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1623149487, now seen corresponding path program 1 times [2021-12-06 20:45:57,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:45:57,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349561835] [2021-12-06 20:45:57,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:45:57,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:45:57,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:45:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:45:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:45:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 20:45:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:45:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:45:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:45:57,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:45:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:45:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:45:57,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:45:57,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349561835] [2021-12-06 20:45:57,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349561835] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:45:57,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:45:57,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:45:57,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024538409] [2021-12-06 20:45:57,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:45:57,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:45:57,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:45:57,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:45:57,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:45:57,597 INFO L87 Difference]: Start difference. First operand 528 states and 872 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:01,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:01,771 INFO L93 Difference]: Finished difference Result 1396 states and 2378 transitions. [2021-12-06 20:46:01,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:46:01,771 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2021-12-06 20:46:01,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:01,778 INFO L225 Difference]: With dead ends: 1396 [2021-12-06 20:46:01,778 INFO L226 Difference]: Without dead ends: 860 [2021-12-06 20:46:01,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:46:01,782 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 2077 mSDsluCounter, 2642 mSDsCounter, 0 mSdLazyCounter, 4835 mSolverCounterSat, 721 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2179 SdHoareTripleChecker+Valid, 3517 SdHoareTripleChecker+Invalid, 5556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 721 IncrementalHoareTripleChecker+Valid, 4835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:01,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2179 Valid, 3517 Invalid, 5556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [721 Valid, 4835 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 20:46:01,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-12-06 20:46:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2021-12-06 20:46:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6567164179104477) internal successors, (666), 418 states have internal predecessors, (666), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 859 transitions. [2021-12-06 20:46:01,869 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 859 transitions. Word has length 89 [2021-12-06 20:46:01,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:01,870 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 859 transitions. [2021-12-06 20:46:01,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:01,870 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 859 transitions. [2021-12-06 20:46:01,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-06 20:46:01,872 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:01,872 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:01,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:46:01,872 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059270, now seen corresponding path program 1 times [2021-12-06 20:46:01,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:01,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526401113] [2021-12-06 20:46:01,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:01,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:01,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:02,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:02,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:46:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:46:02,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:46:02,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 20:46:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:46:02,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:02,102 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:02,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:02,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526401113] [2021-12-06 20:46:02,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526401113] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:02,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:02,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:46:02,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494153118] [2021-12-06 20:46:02,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:02,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:46:02,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:02,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:46:02,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:46:02,104 INFO L87 Difference]: Start difference. First operand 522 states and 859 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:06,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:06,208 INFO L93 Difference]: Finished difference Result 1366 states and 2329 transitions. [2021-12-06 20:46:06,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:46:06,209 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2021-12-06 20:46:06,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:06,213 INFO L225 Difference]: With dead ends: 1366 [2021-12-06 20:46:06,214 INFO L226 Difference]: Without dead ends: 860 [2021-12-06 20:46:06,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:46:06,216 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 1965 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 4740 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 3688 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 4740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:06,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2067 Valid, 3688 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 4740 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 20:46:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2021-12-06 20:46:06,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2021-12-06 20:46:06,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.654228855721393) internal successors, (665), 418 states have internal predecessors, (665), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:06,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 858 transitions. [2021-12-06 20:46:06,291 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 858 transitions. Word has length 90 [2021-12-06 20:46:06,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:06,291 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 858 transitions. [2021-12-06 20:46:06,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:06,292 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 858 transitions. [2021-12-06 20:46:06,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:46:06,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:06,293 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:06,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:46:06,294 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:06,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1106325972, now seen corresponding path program 1 times [2021-12-06 20:46:06,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:06,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890333734] [2021-12-06 20:46:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:06,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:06,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:06,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 20:46:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:46:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:46:06,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:46:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:46:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:06,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:06,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:06,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890333734] [2021-12-06 20:46:06,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890333734] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:06,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:06,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:46:06,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934570641] [2021-12-06 20:46:06,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:06,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:46:06,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:06,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:46:06,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:46:06,516 INFO L87 Difference]: Start difference. First operand 522 states and 858 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:10,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:10,840 INFO L93 Difference]: Finished difference Result 1387 states and 2351 transitions. [2021-12-06 20:46:10,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:46:10,841 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2021-12-06 20:46:10,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:10,845 INFO L225 Difference]: With dead ends: 1387 [2021-12-06 20:46:10,845 INFO L226 Difference]: Without dead ends: 881 [2021-12-06 20:46:10,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:46:10,848 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1473 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 522 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 5485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 522 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:10,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 3665 Invalid, 5485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [522 Valid, 4963 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 20:46:10,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2021-12-06 20:46:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 527. [2021-12-06 20:46:10,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 407 states have (on average 1.6461916461916462) internal successors, (670), 423 states have internal predecessors, (670), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:10,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 863 transitions. [2021-12-06 20:46:10,913 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 863 transitions. Word has length 91 [2021-12-06 20:46:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:10,914 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 863 transitions. [2021-12-06 20:46:10,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:10,914 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 863 transitions. [2021-12-06 20:46:10,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-06 20:46:10,917 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:10,917 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:10,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:46:10,917 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:10,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1537712523, now seen corresponding path program 1 times [2021-12-06 20:46:10,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:10,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288393164] [2021-12-06 20:46:10,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:10,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:10,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 20:46:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:46:11,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:46:11,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 20:46:11,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 20:46:11,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:11,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:11,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288393164] [2021-12-06 20:46:11,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288393164] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:11,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:11,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:46:11,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429927546] [2021-12-06 20:46:11,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:11,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:46:11,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:46:11,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:46:11,145 INFO L87 Difference]: Start difference. First operand 527 states and 863 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:15,309 INFO L93 Difference]: Finished difference Result 1389 states and 2350 transitions. [2021-12-06 20:46:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:46:15,311 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2021-12-06 20:46:15,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:15,315 INFO L225 Difference]: With dead ends: 1389 [2021-12-06 20:46:15,315 INFO L226 Difference]: Without dead ends: 854 [2021-12-06 20:46:15,317 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:46:15,318 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 1507 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 4944 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3693 SdHoareTripleChecker+Invalid, 5460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 4944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:15,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1609 Valid, 3693 Invalid, 5460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 4944 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 20:46:15,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-12-06 20:46:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2021-12-06 20:46:15,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.643939393939394) internal successors, (651), 412 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:15,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 844 transitions. [2021-12-06 20:46:15,383 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 844 transitions. Word has length 91 [2021-12-06 20:46:15,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:15,383 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 844 transitions. [2021-12-06 20:46:15,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:15,383 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 844 transitions. [2021-12-06 20:46:15,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 20:46:15,385 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:15,385 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:15,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:46:15,385 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:15,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1696211253, now seen corresponding path program 1 times [2021-12-06 20:46:15,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:15,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619293765] [2021-12-06 20:46:15,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:15,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:15,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:15,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 20:46:15,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 20:46:15,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:46:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:46:15,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 20:46:15,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:15,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:15,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:15,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619293765] [2021-12-06 20:46:15,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619293765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:15,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:15,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:46:15,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130267619] [2021-12-06 20:46:15,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:15,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:46:15,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:15,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:46:15,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:46:15,601 INFO L87 Difference]: Start difference. First operand 516 states and 844 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:19,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:19,905 INFO L93 Difference]: Finished difference Result 1366 states and 2310 transitions. [2021-12-06 20:46:19,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:46:19,906 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2021-12-06 20:46:19,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:19,911 INFO L225 Difference]: With dead ends: 1366 [2021-12-06 20:46:19,911 INFO L226 Difference]: Without dead ends: 866 [2021-12-06 20:46:19,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:46:19,914 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 970 mSDsluCounter, 2792 mSDsCounter, 0 mSdLazyCounter, 4919 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3632 SdHoareTripleChecker+Invalid, 5248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 4919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:19,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 3632 Invalid, 5248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 4919 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 20:46:19,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2021-12-06 20:46:19,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 522. [2021-12-06 20:46:19,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6343283582089552) internal successors, (657), 418 states have internal predecessors, (657), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2021-12-06 20:46:19,981 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 92 [2021-12-06 20:46:19,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:19,982 INFO L470 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2021-12-06 20:46:19,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:19,982 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2021-12-06 20:46:19,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 20:46:19,983 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:19,983 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:19,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:46:19,984 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:19,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:19,990 INFO L85 PathProgramCache]: Analyzing trace with hash -435294003, now seen corresponding path program 1 times [2021-12-06 20:46:19,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:19,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433958598] [2021-12-06 20:46:19,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:19,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 20:46:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 20:46:20,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 20:46:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 20:46:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 20:46:20,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:20,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:20,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433958598] [2021-12-06 20:46:20,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433958598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:20,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:20,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:46:20,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818311056] [2021-12-06 20:46:20,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:20,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:46:20,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:20,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:46:20,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:46:20,191 INFO L87 Difference]: Start difference. First operand 522 states and 850 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:24,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:24,461 INFO L93 Difference]: Finished difference Result 1369 states and 2311 transitions. [2021-12-06 20:46:24,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:46:24,461 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2021-12-06 20:46:24,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:24,466 INFO L225 Difference]: With dead ends: 1369 [2021-12-06 20:46:24,466 INFO L226 Difference]: Without dead ends: 854 [2021-12-06 20:46:24,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:46:24,469 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 998 mSDsluCounter, 2667 mSDsCounter, 0 mSdLazyCounter, 4855 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 3484 SdHoareTripleChecker+Invalid, 5183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:24,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 3484 Invalid, 5183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4855 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 20:46:24,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-12-06 20:46:24,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2021-12-06 20:46:24,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.6414141414141414) internal successors, (650), 412 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2021-12-06 20:46:24,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 843 transitions. [2021-12-06 20:46:24,553 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 843 transitions. Word has length 92 [2021-12-06 20:46:24,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:24,553 INFO L470 AbstractCegarLoop]: Abstraction has 516 states and 843 transitions. [2021-12-06 20:46:24,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 20:46:24,554 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 843 transitions. [2021-12-06 20:46:24,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 20:46:24,555 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:24,556 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:24,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:46:24,556 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:24,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:24,556 INFO L85 PathProgramCache]: Analyzing trace with hash -397472774, now seen corresponding path program 1 times [2021-12-06 20:46:24,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:24,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877369515] [2021-12-06 20:46:24,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:24,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:24,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:24,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:46:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:46:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 20:46:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:46:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:24,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:24,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:24,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877369515] [2021-12-06 20:46:24,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877369515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:24,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:24,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:46:24,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141251808] [2021-12-06 20:46:24,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:24,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:46:24,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:24,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:46:24,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:46:24,784 INFO L87 Difference]: Start difference. First operand 516 states and 843 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 20:46:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:31,171 INFO L93 Difference]: Finished difference Result 2067 states and 3541 transitions. [2021-12-06 20:46:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:46:31,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2021-12-06 20:46:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:31,180 INFO L225 Difference]: With dead ends: 2067 [2021-12-06 20:46:31,180 INFO L226 Difference]: Without dead ends: 1569 [2021-12-06 20:46:31,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:46:31,184 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 4232 mSDsluCounter, 1913 mSDsCounter, 0 mSdLazyCounter, 3978 mSolverCounterSat, 1925 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 2916 SdHoareTripleChecker+Invalid, 5903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1925 IncrementalHoareTripleChecker+Valid, 3978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:31,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4335 Valid, 2916 Invalid, 5903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1925 Valid, 3978 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-12-06 20:46:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2021-12-06 20:46:31,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 963. [2021-12-06 20:46:31,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 742 states have (on average 1.6037735849056605) internal successors, (1190), 772 states have internal predecessors, (1190), 180 states have call successors, (180), 43 states have call predecessors, (180), 40 states have return successors, (181), 172 states have call predecessors, (181), 176 states have call successors, (181) [2021-12-06 20:46:31,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1551 transitions. [2021-12-06 20:46:31,335 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1551 transitions. Word has length 93 [2021-12-06 20:46:31,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:31,335 INFO L470 AbstractCegarLoop]: Abstraction has 963 states and 1551 transitions. [2021-12-06 20:46:31,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2021-12-06 20:46:31,335 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1551 transitions. [2021-12-06 20:46:31,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 20:46:31,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:31,336 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:31,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:46:31,337 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:31,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:31,337 INFO L85 PathProgramCache]: Analyzing trace with hash 204066973, now seen corresponding path program 1 times [2021-12-06 20:46:31,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:31,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627722869] [2021-12-06 20:46:31,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:31,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:46:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:46:31,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:46:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:46:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:46:31,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:46:31,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627722869] [2021-12-06 20:46:31,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627722869] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:31,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283635885] [2021-12-06 20:46:31,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:31,603 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:31,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:31,604 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:31,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:46:31,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:31,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:46:31,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:31,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:31,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:46:31,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283635885] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:31,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:46:31,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 20:46:31,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538346698] [2021-12-06 20:46:31,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:31,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:46:31,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:31,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:46:31,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:46:31,873 INFO L87 Difference]: Start difference. First operand 963 states and 1551 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 20:46:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:32,177 INFO L93 Difference]: Finished difference Result 2763 states and 4519 transitions. [2021-12-06 20:46:32,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:46:32,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2021-12-06 20:46:32,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:32,188 INFO L225 Difference]: With dead ends: 2763 [2021-12-06 20:46:32,188 INFO L226 Difference]: Without dead ends: 1818 [2021-12-06 20:46:32,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:46:32,193 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 784 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:32,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [784 Valid, 1718 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:46:32,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2021-12-06 20:46:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1757. [2021-12-06 20:46:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1362 states have (on average 1.6240822320117474) internal successors, (2212), 1422 states have internal predecessors, (2212), 319 states have call successors, (319), 76 states have call predecessors, (319), 75 states have return successors, (334), 308 states have call predecessors, (334), 315 states have call successors, (334) [2021-12-06 20:46:32,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2865 transitions. [2021-12-06 20:46:32,476 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2865 transitions. Word has length 98 [2021-12-06 20:46:32,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:32,477 INFO L470 AbstractCegarLoop]: Abstraction has 1757 states and 2865 transitions. [2021-12-06 20:46:32,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 20:46:32,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2865 transitions. [2021-12-06 20:46:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 20:46:32,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:32,479 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:32,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:46:32,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-06 20:46:32,680 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:32,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:32,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1363197387, now seen corresponding path program 1 times [2021-12-06 20:46:32,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:32,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757965053] [2021-12-06 20:46:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:32,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:46:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 20:46:32,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:46:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:46:32,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:46:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:32,945 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:46:32,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757965053] [2021-12-06 20:46:32,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757965053] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:46:32,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424919929] [2021-12-06 20:46:32,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:32,945 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:46:32,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:46:32,946 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:46:32,947 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:46:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:33,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:46:33,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:46:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:46:33,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:46:33,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424919929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:33,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:46:33,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-12-06 20:46:33,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974309884] [2021-12-06 20:46:33,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:33,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:46:33,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:33,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:46:33,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:46:33,199 INFO L87 Difference]: Start difference. First operand 1757 states and 2865 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 20:46:33,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:33,549 INFO L93 Difference]: Finished difference Result 3935 states and 6456 transitions. [2021-12-06 20:46:33,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:46:33,550 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2021-12-06 20:46:33,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:33,560 INFO L225 Difference]: With dead ends: 3935 [2021-12-06 20:46:33,560 INFO L226 Difference]: Without dead ends: 2196 [2021-12-06 20:46:33,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:46:33,571 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 782 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:33,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [782 Valid, 1657 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:46:33,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2021-12-06 20:46:33,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2149. [2021-12-06 20:46:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1669 states have (on average 1.6369083283403236) internal successors, (2732), 1744 states have internal predecessors, (2732), 388 states have call successors, (388), 91 states have call predecessors, (388), 91 states have return successors, (407), 376 states have call predecessors, (407), 384 states have call successors, (407) [2021-12-06 20:46:33,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3527 transitions. [2021-12-06 20:46:33,896 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3527 transitions. Word has length 99 [2021-12-06 20:46:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:33,896 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3527 transitions. [2021-12-06 20:46:33,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 20:46:33,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3527 transitions. [2021-12-06 20:46:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 20:46:33,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:33,898 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:33,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:46:34,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 20:46:34,100 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:34,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:34,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1972797999, now seen corresponding path program 1 times [2021-12-06 20:46:34,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:34,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232940043] [2021-12-06 20:46:34,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:34,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:34,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:46:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:46:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:46:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:46:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 20:46:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:46:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:34,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:34,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232940043] [2021-12-06 20:46:34,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232940043] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:34,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:34,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:46:34,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965333306] [2021-12-06 20:46:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:34,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:46:34,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:46:34,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:46:34,364 INFO L87 Difference]: Start difference. First operand 2149 states and 3527 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:46:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:48,503 INFO L93 Difference]: Finished difference Result 11101 states and 20444 transitions. [2021-12-06 20:46:48,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:46:48,504 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2021-12-06 20:46:48,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:48,566 INFO L225 Difference]: With dead ends: 11101 [2021-12-06 20:46:48,566 INFO L226 Difference]: Without dead ends: 8970 [2021-12-06 20:46:48,581 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:46:48,581 INFO L933 BasicCegarLoop]: 1119 mSDtfsCounter, 4775 mSDsluCounter, 2807 mSDsCounter, 0 mSdLazyCounter, 7937 mSolverCounterSat, 2848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 3926 SdHoareTripleChecker+Invalid, 10785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2848 IncrementalHoareTripleChecker+Valid, 7937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:48,582 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4884 Valid, 3926 Invalid, 10785 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2848 Valid, 7937 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2021-12-06 20:46:48,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2021-12-06 20:46:49,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 5277. [2021-12-06 20:46:49,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 3865 states have (on average 1.6116429495472187) internal successors, (6229), 4170 states have internal predecessors, (6229), 1172 states have call successors, (1172), 176 states have call predecessors, (1172), 239 states have return successors, (1944), 1166 states have call predecessors, (1944), 1166 states have call successors, (1944) [2021-12-06 20:46:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 9345 transitions. [2021-12-06 20:46:49,783 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 9345 transitions. Word has length 101 [2021-12-06 20:46:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:49,783 INFO L470 AbstractCegarLoop]: Abstraction has 5277 states and 9345 transitions. [2021-12-06 20:46:49,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:46:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 9345 transitions. [2021-12-06 20:46:49,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-06 20:46:49,786 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:49,786 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:49,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:46:49,786 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:49,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:49,786 INFO L85 PathProgramCache]: Analyzing trace with hash -226788623, now seen corresponding path program 1 times [2021-12-06 20:46:49,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:49,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928881396] [2021-12-06 20:46:49,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:49,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:49,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:49,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:46:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 20:46:49,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 20:46:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:46:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:46:49,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 20:46:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:49,970 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:46:49,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:49,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928881396] [2021-12-06 20:46:49,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928881396] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:49,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:49,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:46:49,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316090023] [2021-12-06 20:46:49,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:49,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:46:49,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:49,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:46:49,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:46:49,971 INFO L87 Difference]: Start difference. First operand 5277 states and 9345 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:46:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:46:55,221 INFO L93 Difference]: Finished difference Result 11995 states and 21665 transitions. [2021-12-06 20:46:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:46:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2021-12-06 20:46:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:46:55,256 INFO L225 Difference]: With dead ends: 11995 [2021-12-06 20:46:55,256 INFO L226 Difference]: Without dead ends: 6736 [2021-12-06 20:46:55,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:46:55,284 INFO L933 BasicCegarLoop]: 879 mSDtfsCounter, 1454 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2402 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:46:55,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 2169 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2402 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 20:46:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2021-12-06 20:46:56,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 5285. [2021-12-06 20:46:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3871 states have (on average 1.6101782485145957) internal successors, (6233), 4176 states have internal predecessors, (6233), 1172 states have call successors, (1172), 180 states have call predecessors, (1172), 241 states have return successors, (1932), 1164 states have call predecessors, (1932), 1166 states have call successors, (1932) [2021-12-06 20:46:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 9337 transitions. [2021-12-06 20:46:56,400 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 9337 transitions. Word has length 102 [2021-12-06 20:46:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:46:56,400 INFO L470 AbstractCegarLoop]: Abstraction has 5285 states and 9337 transitions. [2021-12-06 20:46:56,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 20:46:56,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 9337 transitions. [2021-12-06 20:46:56,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 20:46:56,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:46:56,404 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:46:56,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:46:56,404 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:46:56,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:46:56,404 INFO L85 PathProgramCache]: Analyzing trace with hash -468332789, now seen corresponding path program 1 times [2021-12-06 20:46:56,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:46:56,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247401954] [2021-12-06 20:46:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:46:56,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:46:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:46:56,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:46:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:46:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:46:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:46:56,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:46:56,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:46:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:46:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:46:56,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:46:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:46:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:46:56,638 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 20:46:56,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:46:56,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247401954] [2021-12-06 20:46:56,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247401954] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:46:56,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:46:56,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:46:56,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074396367] [2021-12-06 20:46:56,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:46:56,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:46:56,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:46:56,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:46:56,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:46:56,641 INFO L87 Difference]: Start difference. First operand 5285 states and 9337 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 20:47:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:47:14,786 INFO L93 Difference]: Finished difference Result 23187 states and 44894 transitions. [2021-12-06 20:47:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:47:14,788 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2021-12-06 20:47:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:47:14,890 INFO L225 Difference]: With dead ends: 23187 [2021-12-06 20:47:14,890 INFO L226 Difference]: Without dead ends: 17920 [2021-12-06 20:47:14,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:47:14,943 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 3757 mSDsluCounter, 3177 mSDsCounter, 0 mSdLazyCounter, 8245 mSolverCounterSat, 2423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3866 SdHoareTripleChecker+Valid, 4375 SdHoareTripleChecker+Invalid, 10668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2423 IncrementalHoareTripleChecker+Valid, 8245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:47:14,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3866 Valid, 4375 Invalid, 10668 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2423 Valid, 8245 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2021-12-06 20:47:14,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2021-12-06 20:47:17,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 10527. [2021-12-06 20:47:17,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 7716 states have (on average 1.6065318818040435) internal successors, (12396), 8321 states have internal predecessors, (12396), 2323 states have call successors, (2323), 354 states have call predecessors, (2323), 487 states have return successors, (4267), 2317 states have call predecessors, (4267), 2313 states have call successors, (4267) [2021-12-06 20:47:17,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 18986 transitions. [2021-12-06 20:47:17,494 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 18986 transitions. Word has length 110 [2021-12-06 20:47:17,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:47:17,494 INFO L470 AbstractCegarLoop]: Abstraction has 10527 states and 18986 transitions. [2021-12-06 20:47:17,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-06 20:47:17,495 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 18986 transitions. [2021-12-06 20:47:17,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 20:47:17,497 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:47:17,498 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:47:17,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:47:17,498 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:47:17,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:47:17,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1224110669, now seen corresponding path program 1 times [2021-12-06 20:47:17,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:47:17,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493876518] [2021-12-06 20:47:17,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:47:17,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:47:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:17,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:47:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:17,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:17,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:47:17,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:47:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:47:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:47:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:47:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:47:17,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-06 20:47:17,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:47:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:17,713 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:47:17,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:47:17,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493876518] [2021-12-06 20:47:17,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493876518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:47:17,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:47:17,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:47:17,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115747588] [2021-12-06 20:47:17,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:47:17,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:47:17,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:47:17,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:47:17,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:47:17,715 INFO L87 Difference]: Start difference. First operand 10527 states and 18986 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:47:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:47:24,665 INFO L93 Difference]: Finished difference Result 23795 states and 44531 transitions. [2021-12-06 20:47:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:47:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2021-12-06 20:47:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:47:24,735 INFO L225 Difference]: With dead ends: 23795 [2021-12-06 20:47:24,736 INFO L226 Difference]: Without dead ends: 13286 [2021-12-06 20:47:24,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:47:24,806 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 1901 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2382 mSolverCounterSat, 689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 2168 SdHoareTripleChecker+Invalid, 3071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 689 IncrementalHoareTripleChecker+Valid, 2382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:47:24,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2005 Valid, 2168 Invalid, 3071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [689 Valid, 2382 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 20:47:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13286 states. [2021-12-06 20:47:27,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13286 to 10567. [2021-12-06 20:47:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 7752 states have (on average 1.6042311661506707) internal successors, (12436), 8349 states have internal predecessors, (12436), 2323 states have call successors, (2323), 370 states have call predecessors, (2323), 491 states have return successors, (4249), 2313 states have call predecessors, (4249), 2313 states have call successors, (4249) [2021-12-06 20:47:27,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 19008 transitions. [2021-12-06 20:47:27,223 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 19008 transitions. Word has length 111 [2021-12-06 20:47:27,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:47:27,224 INFO L470 AbstractCegarLoop]: Abstraction has 10567 states and 19008 transitions. [2021-12-06 20:47:27,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:47:27,224 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 19008 transitions. [2021-12-06 20:47:27,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-06 20:47:27,227 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:47:27,228 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 20:47:27,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:47:27,228 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:47:27,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:47:27,228 INFO L85 PathProgramCache]: Analyzing trace with hash -902491661, now seen corresponding path program 1 times [2021-12-06 20:47:27,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:47:27,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743481963] [2021-12-06 20:47:27,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:47:27,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:47:27,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:27,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:47:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:47:27,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:47:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:47:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:47:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:47:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 20:47:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:47:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 20:47:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:47:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:27,430 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 20:47:27,430 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:47:27,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743481963] [2021-12-06 20:47:27,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743481963] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:47:27,430 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:47:27,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:47:27,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063932453] [2021-12-06 20:47:27,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:47:27,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:47:27,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:47:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:47:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:47:27,432 INFO L87 Difference]: Start difference. First operand 10567 states and 19008 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 20:47:51,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:47:51,946 INFO L93 Difference]: Finished difference Result 46361 states and 95562 transitions. [2021-12-06 20:47:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:47:51,947 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-12-06 20:47:51,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:47:52,208 INFO L225 Difference]: With dead ends: 46361 [2021-12-06 20:47:52,209 INFO L226 Difference]: Without dead ends: 35812 [2021-12-06 20:47:52,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:47:52,296 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 3780 mSDsluCounter, 3105 mSDsCounter, 0 mSdLazyCounter, 8291 mSolverCounterSat, 2437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3890 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 10728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2437 IncrementalHoareTripleChecker+Valid, 8291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:47:52,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3890 Valid, 4305 Invalid, 10728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2437 Valid, 8291 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2021-12-06 20:47:52,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35812 states. [2021-12-06 20:47:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35812 to 21127. [2021-12-06 20:47:57,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21127 states, 15505 states have (on average 1.600967429861335) internal successors, (24823), 16694 states have internal predecessors, (24823), 4630 states have call successors, (4630), 734 states have call predecessors, (4630), 991 states have return successors, (9610), 4624 states have call predecessors, (9610), 4612 states have call successors, (9610) [2021-12-06 20:47:57,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 39063 transitions. [2021-12-06 20:47:57,705 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 39063 transitions. Word has length 120 [2021-12-06 20:47:57,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:47:57,706 INFO L470 AbstractCegarLoop]: Abstraction has 21127 states and 39063 transitions. [2021-12-06 20:47:57,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 20:47:57,706 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 39063 transitions. [2021-12-06 20:47:57,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 20:47:57,709 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:47:57,710 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 20:47:57,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:47:57,710 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:47:57,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:47:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash 466629917, now seen corresponding path program 1 times [2021-12-06 20:47:57,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:47:57,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293832572] [2021-12-06 20:47:57,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:47:57,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:47:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:57,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:47:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:47:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:47:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:47:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:47:57,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:47:57,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:47:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 20:47:57,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:47:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:47:57,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 20:47:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:47:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:47:57,897 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 20:47:57,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:47:57,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293832572] [2021-12-06 20:47:57,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293832572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:47:57,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:47:57,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:47:57,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641306659] [2021-12-06 20:47:57,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:47:57,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:47:57,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:47:57,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:47:57,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:47:57,899 INFO L87 Difference]: Start difference. First operand 21127 states and 39063 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 20:48:08,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:48:08,966 INFO L93 Difference]: Finished difference Result 47635 states and 94243 transitions. [2021-12-06 20:48:08,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:48:08,968 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2021-12-06 20:48:08,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:48:09,130 INFO L225 Difference]: With dead ends: 47635 [2021-12-06 20:48:09,130 INFO L226 Difference]: Without dead ends: 26526 [2021-12-06 20:48:09,359 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:48:09,359 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 988 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 2581 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:48:09,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1091 Valid, 2189 Invalid, 2907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2581 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 20:48:09,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26526 states. [2021-12-06 20:48:14,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26526 to 21207. [2021-12-06 20:48:14,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21207 states, 15577 states have (on average 1.5987032162804133) internal successors, (24903), 16766 states have internal predecessors, (24903), 4630 states have call successors, (4630), 750 states have call predecessors, (4630), 999 states have return successors, (9586), 4616 states have call predecessors, (9586), 4612 states have call successors, (9586) [2021-12-06 20:48:14,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 39119 transitions. [2021-12-06 20:48:14,636 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 39119 transitions. Word has length 121 [2021-12-06 20:48:14,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:48:14,636 INFO L470 AbstractCegarLoop]: Abstraction has 21207 states and 39119 transitions. [2021-12-06 20:48:14,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 20:48:14,636 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 39119 transitions. [2021-12-06 20:48:14,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 20:48:14,641 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:48:14,641 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-12-06 20:48:14,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:48:14,642 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:48:14,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:48:14,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1042938137, now seen corresponding path program 1 times [2021-12-06 20:48:14,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:48:14,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140874141] [2021-12-06 20:48:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:48:14,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:48:14,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:48:14,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:48:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:48:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:48:14,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:48:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:48:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:48:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:48:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:48:14,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:48:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 20:48:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:48:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:48:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 20:48:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 20:48:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:48:14,852 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 20:48:14,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:48:14,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140874141] [2021-12-06 20:48:14,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140874141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:48:14,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:48:14,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:48:14,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863449133] [2021-12-06 20:48:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:48:14,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:48:14,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:48:14,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:48:14,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:48:14,853 INFO L87 Difference]: Start difference. First operand 21207 states and 39119 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 20:48:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:48:49,852 INFO L93 Difference]: Finished difference Result 88249 states and 198389 transitions. [2021-12-06 20:48:49,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 20:48:49,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2021-12-06 20:48:49,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:48:50,562 INFO L225 Difference]: With dead ends: 88249 [2021-12-06 20:48:50,562 INFO L226 Difference]: Without dead ends: 67060 [2021-12-06 20:48:50,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:48:50,769 INFO L933 BasicCegarLoop]: 1191 mSDtfsCounter, 2826 mSDsluCounter, 3142 mSDsCounter, 0 mSdLazyCounter, 8546 mSolverCounterSat, 2011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2937 SdHoareTripleChecker+Valid, 4333 SdHoareTripleChecker+Invalid, 10557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2011 IncrementalHoareTripleChecker+Valid, 8546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:48:50,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2937 Valid, 4333 Invalid, 10557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2011 Valid, 8546 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2021-12-06 20:48:50,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67060 states. [2021-12-06 20:49:02,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67060 to 42459. [2021-12-06 20:49:02,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42459 states, 31194 states have (on average 1.5956273642367123) internal successors, (49774), 33567 states have internal predecessors, (49774), 9249 states have call successors, (9249), 1494 states have call predecessors, (9249), 2015 states have return successors, (22663), 9243 states have call predecessors, (22663), 9215 states have call successors, (22663) [2021-12-06 20:49:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42459 states to 42459 states and 81686 transitions. [2021-12-06 20:49:02,629 INFO L78 Accepts]: Start accepts. Automaton has 42459 states and 81686 transitions. Word has length 131 [2021-12-06 20:49:02,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:49:02,629 INFO L470 AbstractCegarLoop]: Abstraction has 42459 states and 81686 transitions. [2021-12-06 20:49:02,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-06 20:49:02,629 INFO L276 IsEmpty]: Start isEmpty. Operand 42459 states and 81686 transitions. [2021-12-06 20:49:02,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-06 20:49:02,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:49:02,635 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 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] [2021-12-06 20:49:02,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:49:02,635 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:49:02,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:49:02,635 INFO L85 PathProgramCache]: Analyzing trace with hash 224298849, now seen corresponding path program 1 times [2021-12-06 20:49:02,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:49:02,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476630792] [2021-12-06 20:49:02,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:49:02,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:49:02,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:49:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:49:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:49:02,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:49:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:49:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:49:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:49:02,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:49:02,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:49:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 20:49:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 20:49:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 20:49:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:49:02,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 20:49:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 20:49:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:02,816 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 20:49:02,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:49:02,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476630792] [2021-12-06 20:49:02,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476630792] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:49:02,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:49:02,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:49:02,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669183055] [2021-12-06 20:49:02,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:49:02,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:49:02,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:49:02,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:49:02,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:49:02,818 INFO L87 Difference]: Start difference. First operand 42459 states and 81686 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:49:23,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:49:23,008 INFO L93 Difference]: Finished difference Result 95503 states and 207049 transitions. [2021-12-06 20:49:23,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:49:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2021-12-06 20:49:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:49:23,396 INFO L225 Difference]: With dead ends: 95503 [2021-12-06 20:49:23,396 INFO L226 Difference]: Without dead ends: 53014 [2021-12-06 20:49:23,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:49:23,975 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 1469 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2409 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 2924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:49:23,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 2155 Invalid, 2924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2409 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 20:49:24,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53014 states. [2021-12-06 20:49:34,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53014 to 42447. [2021-12-06 20:49:35,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42447 states, 31220 states have (on average 1.5930172966047405) internal successors, (49734), 33591 states have internal predecessors, (49734), 9201 states have call successors, (9201), 1509 states have call predecessors, (9201), 2025 states have return successors, (22431), 9180 states have call predecessors, (22431), 9167 states have call successors, (22431) [2021-12-06 20:49:35,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42447 states to 42447 states and 81366 transitions. [2021-12-06 20:49:35,483 INFO L78 Accepts]: Start accepts. Automaton has 42447 states and 81366 transitions. Word has length 132 [2021-12-06 20:49:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:49:35,483 INFO L470 AbstractCegarLoop]: Abstraction has 42447 states and 81366 transitions. [2021-12-06 20:49:35,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:49:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 42447 states and 81366 transitions. [2021-12-06 20:49:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 20:49:35,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:49:35,492 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:49:35,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 20:49:35,492 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:49:35,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:49:35,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1219605019, now seen corresponding path program 1 times [2021-12-06 20:49:35,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:49:35,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453933346] [2021-12-06 20:49:35,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:49:35,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:49:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:49:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:49:35,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:49:35,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:49:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:49:35,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:49:35,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:49:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:49:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:49:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:49:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:49:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 20:49:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 20:49:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:49:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 20:49:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 20:49:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 20:49:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,823 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 20:49:35,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:49:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453933346] [2021-12-06 20:49:35,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453933346] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:49:35,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711011366] [2021-12-06 20:49:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:49:35,823 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:49:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:49:35,824 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:49:35,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:49:35,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:49:35,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1906 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:49:35,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:49:36,086 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-12-06 20:49:36,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:49:36,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711011366] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:49:36,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:49:36,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [15] total 15 [2021-12-06 20:49:36,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570664713] [2021-12-06 20:49:36,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:49:36,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:49:36,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:49:36,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:49:36,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:49:36,088 INFO L87 Difference]: Start difference. First operand 42447 states and 81366 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:49:52,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:49:52,470 INFO L93 Difference]: Finished difference Result 95109 states and 187060 transitions. [2021-12-06 20:49:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:49:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 148 [2021-12-06 20:49:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:49:52,881 INFO L225 Difference]: With dead ends: 95109 [2021-12-06 20:49:52,881 INFO L226 Difference]: Without dead ends: 68706 [2021-12-06 20:49:53,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:49:53,159 INFO L933 BasicCegarLoop]: 960 mSDtfsCounter, 830 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:49:53,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 1789 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:49:53,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68706 states. [2021-12-06 20:50:09,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68706 to 68462. [2021-12-06 20:50:09,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68462 states, 50479 states have (on average 1.603557915172646) internal successors, (80946), 54228 states have internal predecessors, (80946), 14683 states have call successors, (14683), 2373 states have call predecessors, (14683), 3299 states have return successors, (37821), 14804 states have call predecessors, (37821), 14633 states have call successors, (37821) [2021-12-06 20:50:10,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68462 states to 68462 states and 133450 transitions. [2021-12-06 20:50:10,054 INFO L78 Accepts]: Start accepts. Automaton has 68462 states and 133450 transitions. Word has length 148 [2021-12-06 20:50:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:50:10,054 INFO L470 AbstractCegarLoop]: Abstraction has 68462 states and 133450 transitions. [2021-12-06 20:50:10,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:50:10,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68462 states and 133450 transitions. [2021-12-06 20:50:10,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-06 20:50:10,065 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:50:10,065 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:50:10,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 20:50:10,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 20:50:10,266 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:50:10,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:50:10,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1637001625, now seen corresponding path program 1 times [2021-12-06 20:50:10,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:50:10,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395084082] [2021-12-06 20:50:10,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:10,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:50:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:50:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:50:10,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:50:10,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:50:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:50:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:50:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:50:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:50:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-06 20:50:10,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:50:10,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:50:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 20:50:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-06 20:50:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:50:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 20:50:10,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 20:50:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 20:50:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-12-06 20:50:10,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:50:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395084082] [2021-12-06 20:50:10,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395084082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:50:10,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352081992] [2021-12-06 20:50:10,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:50:10,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:50:10,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:50:10,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:50:10,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:50:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:50:10,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1905 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:50:10,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:50:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:50:11,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:50:11,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352081992] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:50:11,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:50:11,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 20 [2021-12-06 20:50:11,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4220787] [2021-12-06 20:50:11,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:50:11,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:50:11,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:50:11,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:50:11,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2021-12-06 20:50:11,046 INFO L87 Difference]: Start difference. First operand 68462 states and 133450 transitions. Second operand has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-06 20:50:46,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:50:46,751 INFO L93 Difference]: Finished difference Result 182727 states and 381470 transitions. [2021-12-06 20:50:46,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 20:50:46,752 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 148 [2021-12-06 20:50:46,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:50:47,683 INFO L225 Difference]: With dead ends: 182727 [2021-12-06 20:50:47,683 INFO L226 Difference]: Without dead ends: 107309 [2021-12-06 20:50:48,522 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:50:48,523 INFO L933 BasicCegarLoop]: 988 mSDtfsCounter, 2590 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 4712 mSolverCounterSat, 1159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2627 SdHoareTripleChecker+Valid, 2560 SdHoareTripleChecker+Invalid, 5871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1159 IncrementalHoareTripleChecker+Valid, 4712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:50:48,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2627 Valid, 2560 Invalid, 5871 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1159 Valid, 4712 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 20:50:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107309 states. [2021-12-06 20:51:12,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107309 to 93783. [2021-12-06 20:51:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93783 states, 69450 states have (on average 1.6066522678185746) internal successors, (111582), 74430 states have internal predecessors, (111582), 19813 states have call successors, (19813), 3205 states have call predecessors, (19813), 4519 states have return successors, (54306), 20031 states have call predecessors, (54306), 19747 states have call successors, (54306) [2021-12-06 20:51:13,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93783 states to 93783 states and 185701 transitions. [2021-12-06 20:51:13,685 INFO L78 Accepts]: Start accepts. Automaton has 93783 states and 185701 transitions. Word has length 148 [2021-12-06 20:51:13,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:51:13,685 INFO L470 AbstractCegarLoop]: Abstraction has 93783 states and 185701 transitions. [2021-12-06 20:51:13,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.75) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-06 20:51:13,685 INFO L276 IsEmpty]: Start isEmpty. Operand 93783 states and 185701 transitions. [2021-12-06 20:51:13,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 20:51:13,698 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:51:13,699 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:51:13,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 20:51:13,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:51:13,900 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:51:13,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:51:13,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1274897711, now seen corresponding path program 1 times [2021-12-06 20:51:13,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:51:13,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85587547] [2021-12-06 20:51:13,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:51:13,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:51:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:51:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:51:14,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:51:14,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:51:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:51:14,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:51:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:51:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:51:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:51:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:51:14,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:51:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 20:51:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:51:14,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:51:14,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 20:51:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:51:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-06 20:51:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:51:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:51:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 20:51:14,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 20:51:14,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:51:14,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:51:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-12-06 20:51:14,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:51:14,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85587547] [2021-12-06 20:51:14,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85587547] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:51:14,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:51:14,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:51:14,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191333837] [2021-12-06 20:51:14,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:51:14,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:51:14,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:51:14,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:51:14,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:51:14,230 INFO L87 Difference]: Start difference. First operand 93783 states and 185701 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:53:26,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:53:26,864 INFO L93 Difference]: Finished difference Result 369251 states and 898061 transitions. [2021-12-06 20:53:26,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:53:26,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2021-12-06 20:53:26,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:53:30,632 INFO L225 Difference]: With dead ends: 369251 [2021-12-06 20:53:30,632 INFO L226 Difference]: Without dead ends: 288678 [2021-12-06 20:53:32,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=289, Invalid=767, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:53:32,004 INFO L933 BasicCegarLoop]: 1114 mSDtfsCounter, 8146 mSDsluCounter, 2724 mSDsCounter, 0 mSdLazyCounter, 8126 mSolverCounterSat, 5330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8251 SdHoareTripleChecker+Valid, 3838 SdHoareTripleChecker+Invalid, 13456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5330 IncrementalHoareTripleChecker+Valid, 8126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:53:32,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8251 Valid, 3838 Invalid, 13456 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5330 Valid, 8126 Invalid, 0 Unknown, 0 Unchecked, 14.5s Time] [2021-12-06 20:53:32,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288678 states. [2021-12-06 20:54:20,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288678 to 159004. [2021-12-06 20:54:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159004 states, 117131 states have (on average 1.6043916640342863) internal successors, (187924), 125875 states have internal predecessors, (187924), 34153 states have call successors, (34153), 5613 states have call predecessors, (34153), 7719 states have return successors, (92000), 34331 states have call predecessors, (92000), 34039 states have call successors, (92000) [2021-12-06 20:54:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159004 states to 159004 states and 314077 transitions. [2021-12-06 20:54:23,246 INFO L78 Accepts]: Start accepts. Automaton has 159004 states and 314077 transitions. Word has length 187 [2021-12-06 20:54:23,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:54:23,247 INFO L470 AbstractCegarLoop]: Abstraction has 159004 states and 314077 transitions. [2021-12-06 20:54:23,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 6 states have internal predecessors, (111), 4 states have call successors, (22), 6 states have call predecessors, (22), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:54:23,247 INFO L276 IsEmpty]: Start isEmpty. Operand 159004 states and 314077 transitions. [2021-12-06 20:54:23,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-06 20:54:23,262 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:54:23,262 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:54:23,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 20:54:23,262 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:54:23,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:54:23,263 INFO L85 PathProgramCache]: Analyzing trace with hash -2144144654, now seen corresponding path program 1 times [2021-12-06 20:54:23,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:54:23,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277899096] [2021-12-06 20:54:23,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:54:23,263 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:54:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:54:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:54:23,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 20:54:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:54:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:54:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 20:54:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:54:23,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:54:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:54:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:54:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:54:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 20:54:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 20:54:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 20:54:23,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:54:23,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 20:54:23,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:54:23,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:54:23,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 20:54:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 20:54:23,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 20:54:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:54:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:54:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 20:54:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 20:54:23,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,590 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-06 20:54:23,590 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:54:23,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277899096] [2021-12-06 20:54:23,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277899096] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:54:23,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17532229] [2021-12-06 20:54:23,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:54:23,591 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:54:23,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:54:23,591 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:54:23,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b30854e-9253-4acc-8b92-fae15c4bd26c/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:54:23,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:54:23,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:54:23,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:54:23,968 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 20:54:23,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:54:23,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17532229] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:54:23,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:54:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 19 [2021-12-06 20:54:23,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560171258] [2021-12-06 20:54:23,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:54:23,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:54:23,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:54:23,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:54:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:54:23,970 INFO L87 Difference]: Start difference. First operand 159004 states and 314077 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) [2021-12-06 20:55:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:55:54,277 INFO L93 Difference]: Finished difference Result 427262 states and 976078 transitions. [2021-12-06 20:55:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:55:54,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 7 states have internal predecessors, (135), 5 states have call successors, (27), 4 states have call predecessors, (27), 5 states have return successors, (25), 5 states have call predecessors, (25), 5 states have call successors, (25) Word has length 206 [2021-12-06 20:55:54,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:55:57,220 INFO L225 Difference]: With dead ends: 427262 [2021-12-06 20:55:57,220 INFO L226 Difference]: Without dead ends: 267988 [2021-12-06 20:55:59,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 249 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=797, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:55:59,971 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 2232 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 3688 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 2763 SdHoareTripleChecker+Invalid, 4503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 3688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:55:59,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2325 Valid, 2763 Invalid, 4503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 3688 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 20:56:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267988 states. [2021-12-06 20:56:55,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267988 to 214987. [2021-12-06 20:56:55,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214987 states, 159868 states have (on average 1.5712337678584833) internal successors, (251190), 170982 states have internal predecessors, (251190), 44071 states have call successors, (44071), 8061 states have call predecessors, (44071), 11047 states have return successors, (143925), 43863 states have call predecessors, (143925), 43941 states have call successors, (143925)