./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF --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 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:35:45,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:35:45,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:35:45,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:35:45,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:35:45,733 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:35:45,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:35:45,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:35:45,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:35:45,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:35:45,742 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:35:45,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:35:45,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:35:45,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:35:45,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:35:45,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:35:45,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:35:45,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:35:45,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:35:45,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:35:45,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:35:45,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:35:45,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:35:45,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:35:45,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:35:45,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:35:45,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:35:45,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:35:45,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:35:45,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:35:45,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:35:45,770 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:35:45,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:35:45,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:35:45,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:35:45,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:35:45,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:35:45,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:35:45,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:35:45,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:35:45,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:35:45,781 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:35:45,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:35:45,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:35:45,807 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:35:45,807 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:35:45,808 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:35:45,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:35:45,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:35:45,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:35:45,810 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:35:45,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:35:45,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:35:45,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:35:45,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:35:45,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:35:45,812 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:35:45,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:35:45,813 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:35:45,813 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:35:45,814 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:35:45,814 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:35:45,814 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:35:45,815 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:35:45,815 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:35:45,815 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:35:45,816 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:35:45,816 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:35:45,816 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:35:45,817 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:35:45,817 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:35:45,817 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:35:45,818 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:35:45,818 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:35:45,818 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:35:45,818 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:35:45,818 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_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79cd0e89b784c92aef5addf1ffd5f426704de99d9c0060c88cf4cdcbae792c3b [2021-11-20 07:35:46,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:35:46,095 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:35:46,098 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:35:46,099 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:35:46,100 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:35:46,101 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-20 07:35:46,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/data/93b2a41d0/139d8f041d744863a901bbe8027d43e8/FLAG16d898a60 [2021-11-20 07:35:46,960 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:35:46,960 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c [2021-11-20 07:35:46,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/data/93b2a41d0/139d8f041d744863a901bbe8027d43e8/FLAG16d898a60 [2021-11-20 07:35:47,086 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/data/93b2a41d0/139d8f041d744863a901bbe8027d43e8 [2021-11-20 07:35:47,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:35:47,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:35:47,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:47,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:35:47,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:35:47,109 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,110 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36b94160 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47, skipping insertion in model container [2021-11-20 07:35:47,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:47,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:35:47,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:35:47,416 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_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-20 07:35:47,775 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:47,785 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:35:47,798 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_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/sv-benchmarks/c/product-lines/elevator_spec3_product11.cil.c[1545,1558] [2021-11-20 07:35:47,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:35:47,975 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:35:47,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47 WrapperNode [2021-11-20 07:35:47,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:35:47,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:47,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:35:47,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:35:47,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,097 INFO L137 Inliner]: procedures = 91, calls = 344, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 1101 [2021-11-20 07:35:48,098 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:35:48,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:35:48,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:35:48,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:35:48,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,245 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:35:48,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:35:48,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:35:48,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:35:48,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (1/1) ... [2021-11-20 07:35:48,296 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:35:48,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:35:48,329 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:35:48,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:35:48,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:35:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-11-20 07:35:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-11-20 07:35:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-20 07:35:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-20 07:35:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-20 07:35:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-20 07:35:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-20 07:35:48,392 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-20 07:35:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-11-20 07:35:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-11-20 07:35:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-20 07:35:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-20 07:35:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-20 07:35:48,393 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-20 07:35:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-20 07:35:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-20 07:35:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-20 07:35:48,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-20 07:35:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-20 07:35:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-20 07:35:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-20 07:35:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-20 07:35:48,395 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-20 07:35:48,395 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-20 07:35:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-20 07:35:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-20 07:35:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-11-20 07:35:48,396 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-11-20 07:35:48,396 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-20 07:35:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-20 07:35:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-20 07:35:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-20 07:35:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-11-20 07:35:48,397 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-11-20 07:35:48,397 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-20 07:35:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-20 07:35:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-20 07:35:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-20 07:35:48,398 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-20 07:35:48,398 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-20 07:35:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-20 07:35:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-20 07:35:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:35:48,399 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-11-20 07:35:48,399 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-11-20 07:35:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-20 07:35:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-20 07:35:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-20 07:35:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-20 07:35:48,400 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-20 07:35:48,400 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-20 07:35:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:35:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:35:48,401 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-20 07:35:48,401 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-20 07:35:48,574 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:35:48,576 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:35:49,713 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:35:49,728 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:35:49,729 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 07:35:49,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:49 BoogieIcfgContainer [2021-11-20 07:35:49,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:35:49,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:35:49,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:35:49,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:35:49,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:35:47" (1/3) ... [2021-11-20 07:35:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92b2dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:49, skipping insertion in model container [2021-11-20 07:35:49,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:35:47" (2/3) ... [2021-11-20 07:35:49,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92b2dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:35:49, skipping insertion in model container [2021-11-20 07:35:49,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:35:49" (3/3) ... [2021-11-20 07:35:49,740 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product11.cil.c [2021-11-20 07:35:49,745 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:35:49,746 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 07:35:49,799 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:35:49,811 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 [2021-11-20 07:35:49,812 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-20 07:35:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand has 583 states, 449 states have (on average 1.6748329621380846) internal successors, (752), 467 states have internal predecessors, (752), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2021-11-20 07:35:49,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-20 07:35:49,878 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:49,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:49,880 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:35:49,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -766320480, now seen corresponding path program 1 times [2021-11-20 07:35:49,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:49,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826771909] [2021-11-20 07:35:49,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:49,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:35:50,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:35:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:35:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:35:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:35:50,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:35:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-11-20 07:35:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:35:50,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-20 07:35:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:35:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:35:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:35:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:35:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:35:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:35:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:35:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:35:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:35:50,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:35:50,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826771909] [2021-11-20 07:35:50,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826771909] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:35:50,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:35:50,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:35:50,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766504232] [2021-11-20 07:35:50,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:35:50,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:35:50,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:35:50,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:35:50,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:35:50,979 INFO L87 Difference]: Start difference. First operand has 583 states, 449 states have (on average 1.6748329621380846) internal successors, (752), 467 states have internal predecessors, (752), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:35:59,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:35:59,676 INFO L93 Difference]: Finished difference Result 1520 states and 2624 transitions. [2021-11-20 07:35:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:35:59,680 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 113 [2021-11-20 07:35:59,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:35:59,720 INFO L225 Difference]: With dead ends: 1520 [2021-11-20 07:35:59,721 INFO L226 Difference]: Without dead ends: 937 [2021-11-20 07:35:59,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:35:59,737 INFO L933 BasicCegarLoop]: 986 mSDtfsCounter, 1723 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 5285 mSolverCounterSat, 552 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 3961 SdHoareTripleChecker+Invalid, 5837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 5285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:35:59,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1834 Valid, 3961 Invalid, 5837 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [552 Valid, 5285 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-20 07:35:59,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2021-11-20 07:35:59,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 586. [2021-11-20 07:35:59,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 452 states have (on average 1.665929203539823) internal successors, (753), 470 states have internal predecessors, (753), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2021-11-20 07:35:59,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 966 transitions. [2021-11-20 07:35:59,961 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 966 transitions. Word has length 113 [2021-11-20 07:35:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:35:59,963 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 966 transitions. [2021-11-20 07:35:59,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:35:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 966 transitions. [2021-11-20 07:35:59,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 07:35:59,976 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:35:59,977 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:35:59,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:35:59,978 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:35:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:35:59,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1891470132, now seen corresponding path program 1 times [2021-11-20 07:35:59,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:35:59,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885405305] [2021-11-20 07:35:59,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:35:59,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:36:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:36:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:36:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 07:36:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:36:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:00,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:36:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:36:00,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:00,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:00,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885405305] [2021-11-20 07:36:00,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885405305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:00,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:00,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:00,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256263600] [2021-11-20 07:36:00,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:00,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:00,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:00,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:00,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:00,527 INFO L87 Difference]: Start difference. First operand 586 states and 966 transitions. Second operand has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:08,594 INFO L93 Difference]: Finished difference Result 1510 states and 2570 transitions. [2021-11-20 07:36:08,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 07:36:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 114 [2021-11-20 07:36:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:08,605 INFO L225 Difference]: With dead ends: 1510 [2021-11-20 07:36:08,605 INFO L226 Difference]: Without dead ends: 940 [2021-11-20 07:36:08,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-20 07:36:08,611 INFO L933 BasicCegarLoop]: 946 mSDtfsCounter, 1673 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 5317 mSolverCounterSat, 560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1784 SdHoareTripleChecker+Valid, 3804 SdHoareTripleChecker+Invalid, 5877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 560 IncrementalHoareTripleChecker+Valid, 5317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:08,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1784 Valid, 3804 Invalid, 5877 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [560 Valid, 5317 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2021-11-20 07:36:08,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2021-11-20 07:36:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 586. [2021-11-20 07:36:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 586 states, 452 states have (on average 1.663716814159292) internal successors, (752), 470 states have internal predecessors, (752), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2021-11-20 07:36:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 965 transitions. [2021-11-20 07:36:08,721 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 965 transitions. Word has length 114 [2021-11-20 07:36:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:08,722 INFO L470 AbstractCegarLoop]: Abstraction has 586 states and 965 transitions. [2021-11-20 07:36:08,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.0) internal successors, (72), 6 states have internal predecessors, (72), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:08,722 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 965 transitions. [2021-11-20 07:36:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-20 07:36:08,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:08,727 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:08,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:36:08,728 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:08,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:08,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1416407114, now seen corresponding path program 1 times [2021-11-20 07:36:08,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:08,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716833793] [2021-11-20 07:36:08,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:08,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:08,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:08,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:08,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-20 07:36:09,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-11-20 07:36:09,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:36:09,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-20 07:36:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-20 07:36:09,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-20 07:36:09,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:09,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-11-20 07:36:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-11-20 07:36:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:09,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:09,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716833793] [2021-11-20 07:36:09,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716833793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:09,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:09,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:36:09,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626090110] [2021-11-20 07:36:09,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:09,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:36:09,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:09,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:36:09,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:36:09,121 INFO L87 Difference]: Start difference. First operand 586 states and 965 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 07:36:14,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:14,658 INFO L93 Difference]: Finished difference Result 1501 states and 2550 transitions. [2021-11-20 07:36:14,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:36:14,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 114 [2021-11-20 07:36:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:14,672 INFO L225 Difference]: With dead ends: 1501 [2021-11-20 07:36:14,672 INFO L226 Difference]: Without dead ends: 900 [2021-11-20 07:36:14,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:14,679 INFO L933 BasicCegarLoop]: 951 mSDtfsCounter, 1602 mSDsluCounter, 1290 mSDsCounter, 0 mSdLazyCounter, 2623 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1712 SdHoareTripleChecker+Valid, 2241 SdHoareTripleChecker+Invalid, 3172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 2623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:14,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1712 Valid, 2241 Invalid, 3172 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 2623 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 07:36:14,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-11-20 07:36:14,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 562. [2021-11-20 07:36:14,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 431 states have (on average 1.654292343387471) internal successors, (713), 447 states have internal predecessors, (713), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:14,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 922 transitions. [2021-11-20 07:36:14,790 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 922 transitions. Word has length 114 [2021-11-20 07:36:14,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:14,791 INFO L470 AbstractCegarLoop]: Abstraction has 562 states and 922 transitions. [2021-11-20 07:36:14,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-11-20 07:36:14,791 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 922 transitions. [2021-11-20 07:36:14,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-20 07:36:14,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:14,795 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:14,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:36:14,796 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1301003116, now seen corresponding path program 1 times [2021-11-20 07:36:14,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:14,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419493344] [2021-11-20 07:36:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:14,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:14,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:15,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-11-20 07:36:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:36:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-11-20 07:36:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-20 07:36:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:36:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:15,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-11-20 07:36:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:36:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:15,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:15,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:15,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419493344] [2021-11-20 07:36:15,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419493344] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:15,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:15,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:15,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915614922] [2021-11-20 07:36:15,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:15,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:15,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:15,224 INFO L87 Difference]: Start difference. First operand 562 states and 922 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:21,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:21,612 INFO L93 Difference]: Finished difference Result 1464 states and 2481 transitions. [2021-11-20 07:36:21,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:21,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 115 [2021-11-20 07:36:21,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:21,621 INFO L225 Difference]: With dead ends: 1464 [2021-11-20 07:36:21,621 INFO L226 Difference]: Without dead ends: 894 [2021-11-20 07:36:21,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:21,627 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 1650 mSDsluCounter, 2769 mSDsCounter, 0 mSdLazyCounter, 5111 mSolverCounterSat, 547 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 3694 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 547 IncrementalHoareTripleChecker+Valid, 5111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:21,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 3694 Invalid, 5658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [547 Valid, 5111 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 07:36:21,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-11-20 07:36:21,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 556. [2021-11-20 07:36:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 425 states have (on average 1.6470588235294117) internal successors, (700), 441 states have internal predecessors, (700), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:21,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 909 transitions. [2021-11-20 07:36:21,763 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 909 transitions. Word has length 115 [2021-11-20 07:36:21,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:21,763 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 909 transitions. [2021-11-20 07:36:21,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:21,764 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 909 transitions. [2021-11-20 07:36:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-20 07:36:21,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:21,768 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:21,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:36:21,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:21,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -792377252, now seen corresponding path program 1 times [2021-11-20 07:36:21,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:21,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638781508] [2021-11-20 07:36:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:21,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:22,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-11-20 07:36:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:36:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:36:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:36:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:36:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-11-20 07:36:22,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:36:22,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:22,156 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:22,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:22,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638781508] [2021-11-20 07:36:22,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638781508] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:22,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:22,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:22,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149873895] [2021-11-20 07:36:22,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:22,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:22,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:22,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:22,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:22,160 INFO L87 Difference]: Start difference. First operand 556 states and 909 transitions. Second operand has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:28,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:28,827 INFO L93 Difference]: Finished difference Result 1434 states and 2430 transitions. [2021-11-20 07:36:28,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:28,828 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2021-11-20 07:36:28,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:28,838 INFO L225 Difference]: With dead ends: 1434 [2021-11-20 07:36:28,838 INFO L226 Difference]: Without dead ends: 894 [2021-11-20 07:36:28,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:28,851 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1060 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 5205 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 5537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:28,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 3719 Invalid, 5537 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [332 Valid, 5205 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-20 07:36:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-11-20 07:36:28,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 556. [2021-11-20 07:36:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 425 states have (on average 1.6447058823529412) internal successors, (699), 441 states have internal predecessors, (699), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 908 transitions. [2021-11-20 07:36:28,993 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 908 transitions. Word has length 116 [2021-11-20 07:36:28,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:28,994 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 908 transitions. [2021-11-20 07:36:28,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:28,994 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 908 transitions. [2021-11-20 07:36:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-20 07:36:29,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:29,001 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:29,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:36:29,002 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:29,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -2045131063, now seen corresponding path program 1 times [2021-11-20 07:36:29,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:29,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224704780] [2021-11-20 07:36:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:29,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:29,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-11-20 07:36:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-11-20 07:36:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-11-20 07:36:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-20 07:36:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-20 07:36:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:36:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:36:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:29,417 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:29,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:29,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224704780] [2021-11-20 07:36:29,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224704780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:29,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:29,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:29,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805174149] [2021-11-20 07:36:29,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:29,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:29,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:29,420 INFO L87 Difference]: Start difference. First operand 556 states and 908 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:35,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:35,976 INFO L93 Difference]: Finished difference Result 1452 states and 2450 transitions. [2021-11-20 07:36:35,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:35,985 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 117 [2021-11-20 07:36:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:35,993 INFO L225 Difference]: With dead ends: 1452 [2021-11-20 07:36:35,993 INFO L226 Difference]: Without dead ends: 888 [2021-11-20 07:36:35,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:35,999 INFO L933 BasicCegarLoop]: 928 mSDtfsCounter, 1567 mSDsluCounter, 2880 mSDsCounter, 0 mSdLazyCounter, 5188 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 5725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 5188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:35,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1677 Valid, 3808 Invalid, 5725 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [537 Valid, 5188 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2021-11-20 07:36:36,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-20 07:36:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 550. [2021-11-20 07:36:36,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 419 states have (on average 1.6372315035799523) internal successors, (686), 435 states have internal predecessors, (686), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 895 transitions. [2021-11-20 07:36:36,096 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 895 transitions. Word has length 117 [2021-11-20 07:36:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 895 transitions. [2021-11-20 07:36:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 895 transitions. [2021-11-20 07:36:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-20 07:36:36,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:36,101 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:36,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:36:36,101 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:36,102 INFO L85 PathProgramCache]: Analyzing trace with hash -432305187, now seen corresponding path program 1 times [2021-11-20 07:36:36,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:36,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666664257] [2021-11-20 07:36:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:36,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:36,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:36,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-20 07:36:36,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-20 07:36:36,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-20 07:36:36,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-11-20 07:36:36,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-20 07:36:36,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-11-20 07:36:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-11-20 07:36:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:36,496 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:36,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:36,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666664257] [2021-11-20 07:36:36,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666664257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:36,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:36,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:36,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609541954] [2021-11-20 07:36:36,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:36,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:36,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:36,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:36,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:36,499 INFO L87 Difference]: Start difference. First operand 550 states and 895 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:42,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:42,512 INFO L93 Difference]: Finished difference Result 1422 states and 2401 transitions. [2021-11-20 07:36:42,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:42,513 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 118 [2021-11-20 07:36:42,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:42,520 INFO L225 Difference]: With dead ends: 1422 [2021-11-20 07:36:42,520 INFO L226 Difference]: Without dead ends: 888 [2021-11-20 07:36:42,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:42,525 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 2022 mSDsluCounter, 2757 mSDsCounter, 0 mSdLazyCounter, 4916 mSolverCounterSat, 751 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2132 SdHoareTripleChecker+Valid, 3637 SdHoareTripleChecker+Invalid, 5667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 751 IncrementalHoareTripleChecker+Valid, 4916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:42,526 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2132 Valid, 3637 Invalid, 5667 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [751 Valid, 4916 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-20 07:36:42,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2021-11-20 07:36:42,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 550. [2021-11-20 07:36:42,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 419 states have (on average 1.6348448687350836) internal successors, (685), 435 states have internal predecessors, (685), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 894 transitions. [2021-11-20 07:36:42,629 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 894 transitions. Word has length 118 [2021-11-20 07:36:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:42,630 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 894 transitions. [2021-11-20 07:36:42,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 894 transitions. [2021-11-20 07:36:42,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 07:36:42,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:42,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:42,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:36:42,634 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:42,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1224075539, now seen corresponding path program 1 times [2021-11-20 07:36:42,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:42,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652543484] [2021-11-20 07:36:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:42,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:42,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:42,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:36:42,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:42,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:36:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:36:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:43,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:36:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:36:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:36:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:36:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:43,058 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:43,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:43,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652543484] [2021-11-20 07:36:43,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652543484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:43,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:43,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:43,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003844199] [2021-11-20 07:36:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:43,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:43,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:43,060 INFO L87 Difference]: Start difference. First operand 550 states and 894 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:49,379 INFO L93 Difference]: Finished difference Result 1440 states and 2419 transitions. [2021-11-20 07:36:49,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:49,382 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-11-20 07:36:49,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:49,390 INFO L225 Difference]: With dead ends: 1440 [2021-11-20 07:36:49,390 INFO L226 Difference]: Without dead ends: 882 [2021-11-20 07:36:49,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:49,394 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1052 mSDsluCounter, 2894 mSDsCounter, 0 mSdLazyCounter, 5150 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 3800 SdHoareTripleChecker+Invalid, 5482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 5150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:49,395 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1162 Valid, 3800 Invalid, 5482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [332 Valid, 5150 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-11-20 07:36:49,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-20 07:36:49,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 544. [2021-11-20 07:36:49,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 413 states have (on average 1.6271186440677967) internal successors, (672), 429 states have internal predecessors, (672), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 881 transitions. [2021-11-20 07:36:49,498 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 881 transitions. Word has length 119 [2021-11-20 07:36:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:49,499 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 881 transitions. [2021-11-20 07:36:49,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:49,499 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 881 transitions. [2021-11-20 07:36:49,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-20 07:36:49,502 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:49,503 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:49,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:36:49,503 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:49,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:49,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1365363252, now seen corresponding path program 1 times [2021-11-20 07:36:49,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:49,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908995447] [2021-11-20 07:36:49,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:49,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-20 07:36:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-20 07:36:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-20 07:36:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-20 07:36:49,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-20 07:36:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-20 07:36:49,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-20 07:36:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:49,908 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:49,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:49,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908995447] [2021-11-20 07:36:49,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908995447] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:49,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:49,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:49,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700831253] [2021-11-20 07:36:49,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:49,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:49,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:49,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:49,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:49,912 INFO L87 Difference]: Start difference. First operand 544 states and 881 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:55,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:36:55,640 INFO L93 Difference]: Finished difference Result 1410 states and 2372 transitions. [2021-11-20 07:36:55,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:36:55,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 119 [2021-11-20 07:36:55,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:36:55,648 INFO L225 Difference]: With dead ends: 1410 [2021-11-20 07:36:55,648 INFO L226 Difference]: Without dead ends: 882 [2021-11-20 07:36:55,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:36:55,652 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 1510 mSDsluCounter, 2791 mSDsCounter, 0 mSdLazyCounter, 4847 mSolverCounterSat, 549 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 3659 SdHoareTripleChecker+Invalid, 5396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 549 IncrementalHoareTripleChecker+Valid, 4847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-11-20 07:36:55,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1620 Valid, 3659 Invalid, 5396 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [549 Valid, 4847 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-11-20 07:36:55,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-20 07:36:55,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 544. [2021-11-20 07:36:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 413 states have (on average 1.6246973365617434) internal successors, (671), 429 states have internal predecessors, (671), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:36:55,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 880 transitions. [2021-11-20 07:36:55,761 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 880 transitions. Word has length 119 [2021-11-20 07:36:55,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:36:55,762 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 880 transitions. [2021-11-20 07:36:55,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:36:55,762 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 880 transitions. [2021-11-20 07:36:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 07:36:55,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:36:55,766 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:36:55,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:36:55,766 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:36:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:36:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1835348381, now seen corresponding path program 1 times [2021-11-20 07:36:55,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:36:55,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022271672] [2021-11-20 07:36:55,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:36:55,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:36:55,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:55,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:36:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:36:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:36:56,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:36:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:36:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:56,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:36:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:36:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:36:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:36:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:36:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:36:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:36:56,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:36:56,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022271672] [2021-11-20 07:36:56,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022271672] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:36:56,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:36:56,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:36:56,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769280503] [2021-11-20 07:36:56,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:36:56,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:36:56,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:36:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:36:56,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:36:56,146 INFO L87 Difference]: Start difference. First operand 544 states and 880 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:02,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:02,506 INFO L93 Difference]: Finished difference Result 1422 states and 2382 transitions. [2021-11-20 07:37:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:37:02,506 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-11-20 07:37:02,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:02,513 INFO L225 Difference]: With dead ends: 1422 [2021-11-20 07:37:02,513 INFO L226 Difference]: Without dead ends: 894 [2021-11-20 07:37:02,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2021-11-20 07:37:02,539 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 992 mSDsluCounter, 2806 mSDsCounter, 0 mSdLazyCounter, 5026 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3666 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 5026 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:02,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1102 Valid, 3666 Invalid, 5364 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [338 Valid, 5026 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 07:37:02,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 894 states. [2021-11-20 07:37:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 894 to 550. [2021-11-20 07:37:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 419 states have (on average 1.6157517899761336) internal successors, (677), 435 states have internal predecessors, (677), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:37:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 886 transitions. [2021-11-20 07:37:02,653 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 886 transitions. Word has length 120 [2021-11-20 07:37:02,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:02,653 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 886 transitions. [2021-11-20 07:37:02,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:02,654 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 886 transitions. [2021-11-20 07:37:02,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-20 07:37:02,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:02,657 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:02,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:37:02,657 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:02,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:02,658 INFO L85 PathProgramCache]: Analyzing trace with hash 41134437, now seen corresponding path program 1 times [2021-11-20 07:37:02,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:02,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710656647] [2021-11-20 07:37:02,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:02,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-20 07:37:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-20 07:37:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-20 07:37:02,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-11-20 07:37:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:02,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-20 07:37:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-20 07:37:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-11-20 07:37:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:37:03,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:03,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710656647] [2021-11-20 07:37:03,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710656647] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:03,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:03,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 07:37:03,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712153214] [2021-11-20 07:37:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:03,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 07:37:03,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:03,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 07:37:03,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:03,028 INFO L87 Difference]: Start difference. First operand 550 states and 886 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:09,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:09,279 INFO L93 Difference]: Finished difference Result 1425 states and 2383 transitions. [2021-11-20 07:37:09,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-20 07:37:09,279 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 120 [2021-11-20 07:37:09,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:09,287 INFO L225 Difference]: With dead ends: 1425 [2021-11-20 07:37:09,287 INFO L226 Difference]: Without dead ends: 882 [2021-11-20 07:37:09,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-11-20 07:37:09,291 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1486 mSDsluCounter, 2896 mSDsCounter, 0 mSdLazyCounter, 4984 mSolverCounterSat, 537 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1596 SdHoareTripleChecker+Valid, 3782 SdHoareTripleChecker+Invalid, 5521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 537 IncrementalHoareTripleChecker+Valid, 4984 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:09,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1596 Valid, 3782 Invalid, 5521 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [537 Valid, 4984 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-20 07:37:09,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2021-11-20 07:37:09,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 544. [2021-11-20 07:37:09,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 413 states have (on average 1.6222760290556901) internal successors, (670), 429 states have internal predecessors, (670), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2021-11-20 07:37:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 879 transitions. [2021-11-20 07:37:09,403 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 879 transitions. Word has length 120 [2021-11-20 07:37:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:09,404 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 879 transitions. [2021-11-20 07:37:09,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 879 transitions. [2021-11-20 07:37:09,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-20 07:37:09,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:09,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:09,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:37:09,408 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1870364402, now seen corresponding path program 1 times [2021-11-20 07:37:09,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:09,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140944461] [2021-11-20 07:37:09,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:09,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:37:09,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:37:09,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 07:37:09,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:09,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:37:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-20 07:37:09,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:09,799 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:37:09,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140944461] [2021-11-20 07:37:09,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140944461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:09,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392210082] [2021-11-20 07:37:09,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:09,800 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:09,800 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:09,805 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:09,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:37:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:10,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1637 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:37:10,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:10,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:37:10,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:10,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392210082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:10,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:10,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:10,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408947248] [2021-11-20 07:37:10,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:10,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:10,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:10,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:10,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:10,455 INFO L87 Difference]: Start difference. First operand 544 states and 879 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:10,733 INFO L93 Difference]: Finished difference Result 1543 states and 2525 transitions. [2021-11-20 07:37:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:10,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 121 [2021-11-20 07:37:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:10,743 INFO L225 Difference]: With dead ends: 1543 [2021-11-20 07:37:10,743 INFO L226 Difference]: Without dead ends: 1017 [2021-11-20 07:37:10,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:10,749 INFO L933 BasicCegarLoop]: 1569 mSDtfsCounter, 806 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2344 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 [2021-11-20 07:37:10,749 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 2344 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-11-20 07:37:10,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1002. [2021-11-20 07:37:10,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1002 states, 768 states have (on average 1.6354166666666667) internal successors, (1256), 799 states have internal predecessors, (1256), 187 states have call successors, (187), 47 states have call predecessors, (187), 46 states have return successors, (189), 181 states have call predecessors, (189), 184 states have call successors, (189) [2021-11-20 07:37:10,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1002 states to 1002 states and 1632 transitions. [2021-11-20 07:37:10,960 INFO L78 Accepts]: Start accepts. Automaton has 1002 states and 1632 transitions. Word has length 121 [2021-11-20 07:37:10,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:10,962 INFO L470 AbstractCegarLoop]: Abstraction has 1002 states and 1632 transitions. [2021-11-20 07:37:10,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:10,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1002 states and 1632 transitions. [2021-11-20 07:37:10,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-20 07:37:10,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:10,968 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:11,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:11,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-20 07:37:11,184 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:11,185 INFO L85 PathProgramCache]: Analyzing trace with hash -803963021, now seen corresponding path program 1 times [2021-11-20 07:37:11,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:11,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534635516] [2021-11-20 07:37:11,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:11,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-20 07:37:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:37:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-11-20 07:37:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-20 07:37:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-20 07:37:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,540 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:37:11,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:11,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534635516] [2021-11-20 07:37:11,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534635516] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:11,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060259442] [2021-11-20 07:37:11,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:11,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:11,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:11,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:11,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:37:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:11,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 1638 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:37:11,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:12,087 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:37:12,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:12,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060259442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:12,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:12,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:12,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578161193] [2021-11-20 07:37:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:12,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:12,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:12,090 INFO L87 Difference]: Start difference. First operand 1002 states and 1632 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:12,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:12,375 INFO L93 Difference]: Finished difference Result 2459 states and 4033 transitions. [2021-11-20 07:37:12,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:12,375 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-11-20 07:37:12,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:12,386 INFO L225 Difference]: With dead ends: 2459 [2021-11-20 07:37:12,387 INFO L226 Difference]: Without dead ends: 1475 [2021-11-20 07:37:12,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:12,393 INFO L933 BasicCegarLoop]: 1509 mSDtfsCounter, 806 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2284 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 [2021-11-20 07:37:12,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [806 Valid, 2284 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-11-20 07:37:12,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1427. [2021-11-20 07:37:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 1096 states have (on average 1.647810218978102) internal successors, (1806), 1142 states have internal predecessors, (1806), 265 states have call successors, (265), 65 states have call predecessors, (265), 65 states have return successors, (272), 258 states have call predecessors, (272), 262 states have call successors, (272) [2021-11-20 07:37:12,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 2343 transitions. [2021-11-20 07:37:12,708 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 2343 transitions. Word has length 122 [2021-11-20 07:37:12,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:12,709 INFO L470 AbstractCegarLoop]: Abstraction has 1427 states and 2343 transitions. [2021-11-20 07:37:12,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 3 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-20 07:37:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 2343 transitions. [2021-11-20 07:37:12,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-20 07:37:12,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:12,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:12,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:12,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:12,932 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:12,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:12,933 INFO L85 PathProgramCache]: Analyzing trace with hash -924596983, now seen corresponding path program 1 times [2021-11-20 07:37:12,933 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:12,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839735478] [2021-11-20 07:37:12,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:12,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:13,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:37:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-20 07:37:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:13,291 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:37:13,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:13,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839735478] [2021-11-20 07:37:13,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839735478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:13,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:13,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:37:13,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594751318] [2021-11-20 07:37:13,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:13,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:37:13,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:13,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:37:13,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:13,294 INFO L87 Difference]: Start difference. First operand 1427 states and 2343 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-11-20 07:37:30,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:30,221 INFO L93 Difference]: Finished difference Result 6999 states and 12796 transitions. [2021-11-20 07:37:30,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:37:30,222 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 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 124 [2021-11-20 07:37:30,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:30,283 INFO L225 Difference]: With dead ends: 6999 [2021-11-20 07:37:30,283 INFO L226 Difference]: Without dead ends: 5590 [2021-11-20 07:37:30,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:37:30,297 INFO L933 BasicCegarLoop]: 1242 mSDtfsCounter, 4819 mSDsluCounter, 3145 mSDsCounter, 0 mSdLazyCounter, 8191 mSolverCounterSat, 2903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4936 SdHoareTripleChecker+Valid, 4387 SdHoareTripleChecker+Invalid, 11094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2903 IncrementalHoareTripleChecker+Valid, 8191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:30,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4936 Valid, 4387 Invalid, 11094 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2903 Valid, 8191 Invalid, 0 Unknown, 0 Unchecked, 14.1s Time] [2021-11-20 07:37:30,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-20 07:37:31,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 3421. [2021-11-20 07:37:31,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3421 states, 2493 states have (on average 1.6257521058965103) internal successors, (4053), 2677 states have internal predecessors, (4053), 765 states have call successors, (765), 124 states have call predecessors, (765), 162 states have return successors, (1225), 763 states have call predecessors, (1225), 761 states have call successors, (1225) [2021-11-20 07:37:31,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3421 states to 3421 states and 6043 transitions. [2021-11-20 07:37:31,319 INFO L78 Accepts]: Start accepts. Automaton has 3421 states and 6043 transitions. Word has length 124 [2021-11-20 07:37:31,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:31,320 INFO L470 AbstractCegarLoop]: Abstraction has 3421 states and 6043 transitions. [2021-11-20 07:37:31,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 5 states have internal predecessors, (80), 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) [2021-11-20 07:37:31,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3421 states and 6043 transitions. [2021-11-20 07:37:31,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 07:37:31,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:31,330 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:31,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 07:37:31,330 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:31,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:31,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1448309410, now seen corresponding path program 1 times [2021-11-20 07:37:31,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:31,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885210249] [2021-11-20 07:37:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:31,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:31,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:31,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:31,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-20 07:37:31,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-20 07:37:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:37:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-11-20 07:37:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:37:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:37:31,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:31,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885210249] [2021-11-20 07:37:31,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885210249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:31,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:31,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:37:31,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224852478] [2021-11-20 07:37:31,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:31,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:37:31,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:31,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:37:31,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:37:31,666 INFO L87 Difference]: Start difference. First operand 3421 states and 6043 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, (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) [2021-11-20 07:37:37,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:37,492 INFO L93 Difference]: Finished difference Result 7818 states and 14093 transitions. [2021-11-20 07:37:37,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:37:37,493 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, (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 125 [2021-11-20 07:37:37,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:37,536 INFO L225 Difference]: With dead ends: 7818 [2021-11-20 07:37:37,536 INFO L226 Difference]: Without dead ends: 4415 [2021-11-20 07:37:37,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:37:37,573 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 997 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 2628 mSolverCounterSat, 333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 2218 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 333 IncrementalHoareTripleChecker+Valid, 2628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:37,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1108 Valid, 2218 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [333 Valid, 2628 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 07:37:37,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4415 states. [2021-11-20 07:37:38,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4415 to 3425. [2021-11-20 07:37:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3425 states, 2496 states have (on average 1.624599358974359) internal successors, (4055), 2680 states have internal predecessors, (4055), 765 states have call successors, (765), 126 states have call predecessors, (765), 163 states have return successors, (1216), 762 states have call predecessors, (1216), 761 states have call successors, (1216) [2021-11-20 07:37:38,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3425 states to 3425 states and 6036 transitions. [2021-11-20 07:37:38,552 INFO L78 Accepts]: Start accepts. Automaton has 3425 states and 6036 transitions. Word has length 125 [2021-11-20 07:37:38,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:38,553 INFO L470 AbstractCegarLoop]: Abstraction has 3425 states and 6036 transitions. [2021-11-20 07:37:38,553 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, (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) [2021-11-20 07:37:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3425 states and 6036 transitions. [2021-11-20 07:37:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-20 07:37:38,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:38,591 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:38,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 07:37:38,591 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:38,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:38,591 INFO L85 PathProgramCache]: Analyzing trace with hash -2019108400, now seen corresponding path program 1 times [2021-11-20 07:37:38,591 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:38,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289170788] [2021-11-20 07:37:38,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:38,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:38,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:38,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:38,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:38,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:38,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:38,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:38,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-11-20 07:37:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-20 07:37:38,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:38,971 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-20 07:37:38,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289170788] [2021-11-20 07:37:38,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289170788] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:38,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012471205] [2021-11-20 07:37:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:38,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:38,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:38,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:38,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:37:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:39,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 1657 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:37:39,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:39,553 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:37:39,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:39,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012471205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:39,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:39,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:39,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366070779] [2021-11-20 07:37:39,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:39,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:39,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:39,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:39,556 INFO L87 Difference]: Start difference. First operand 3425 states and 6036 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 07:37:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:41,082 INFO L93 Difference]: Finished difference Result 9985 states and 17801 transitions. [2021-11-20 07:37:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:41,083 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-11-20 07:37:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:41,138 INFO L225 Difference]: With dead ends: 9985 [2021-11-20 07:37:41,138 INFO L226 Difference]: Without dead ends: 6579 [2021-11-20 07:37:41,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:41,158 INFO L933 BasicCegarLoop]: 989 mSDtfsCounter, 717 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 1780 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:41,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 1780 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:37:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6579 states. [2021-11-20 07:37:42,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6579 to 6542. [2021-11-20 07:37:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6542 states, 4742 states have (on average 1.5959510754955715) internal successors, (7568), 5108 states have internal predecessors, (7568), 1478 states have call successors, (1478), 246 states have call predecessors, (1478), 321 states have return successors, (2471), 1475 states have call predecessors, (2471), 1472 states have call successors, (2471) [2021-11-20 07:37:42,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6542 states to 6542 states and 11517 transitions. [2021-11-20 07:37:42,765 INFO L78 Accepts]: Start accepts. Automaton has 6542 states and 11517 transitions. Word has length 125 [2021-11-20 07:37:42,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:42,765 INFO L470 AbstractCegarLoop]: Abstraction has 6542 states and 11517 transitions. [2021-11-20 07:37:42,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-20 07:37:42,766 INFO L276 IsEmpty]: Start isEmpty. Operand 6542 states and 11517 transitions. [2021-11-20 07:37:42,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 07:37:42,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:42,773 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:42,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:42,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:42,988 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:42,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1482838830, now seen corresponding path program 1 times [2021-11-20 07:37:42,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:42,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051342135] [2021-11-20 07:37:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:42,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:43,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:43,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:43,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:43,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:37:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:37:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:37:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:37:43,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:43,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051342135] [2021-11-20 07:37:43,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051342135] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:43,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140778249] [2021-11-20 07:37:43,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:43,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:43,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:43,371 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:43,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-20 07:37:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:43,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1650 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:37:43,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 07:37:43,845 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:43,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140778249] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:43,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:43,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2021-11-20 07:37:43,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120553343] [2021-11-20 07:37:43,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:43,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:37:43,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:43,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:37:43,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:43,847 INFO L87 Difference]: Start difference. First operand 6542 states and 11517 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:37:46,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:46,544 INFO L93 Difference]: Finished difference Result 19512 states and 34660 transitions. [2021-11-20 07:37:46,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:37:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 127 [2021-11-20 07:37:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:46,661 INFO L225 Difference]: With dead ends: 19512 [2021-11-20 07:37:46,661 INFO L226 Difference]: Without dead ends: 12991 [2021-11-20 07:37:46,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 07:37:46,703 INFO L933 BasicCegarLoop]: 985 mSDtfsCounter, 866 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 866 SdHoareTripleChecker+Valid, 1850 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 [2021-11-20 07:37:46,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [866 Valid, 1850 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:37:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12991 states. [2021-11-20 07:37:49,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12991 to 12888. [2021-11-20 07:37:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12888 states, 9360 states have (on average 1.5986111111111112) internal successors, (14963), 10072 states have internal predecessors, (14963), 2896 states have call successors, (2896), 474 states have call predecessors, (2896), 631 states have return successors, (4924), 2911 states have call predecessors, (4924), 2886 states have call successors, (4924) [2021-11-20 07:37:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12888 states to 12888 states and 22783 transitions. [2021-11-20 07:37:49,737 INFO L78 Accepts]: Start accepts. Automaton has 12888 states and 22783 transitions. Word has length 127 [2021-11-20 07:37:49,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:49,737 INFO L470 AbstractCegarLoop]: Abstraction has 12888 states and 22783 transitions. [2021-11-20 07:37:49,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-11-20 07:37:49,738 INFO L276 IsEmpty]: Start isEmpty. Operand 12888 states and 22783 transitions. [2021-11-20 07:37:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-20 07:37:49,745 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:49,745 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:49,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:49,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-20 07:37:49,972 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:49,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:49,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1801011216, now seen corresponding path program 1 times [2021-11-20 07:37:49,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:49,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680468161] [2021-11-20 07:37:49,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:49,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:50,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:50,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:50,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-20 07:37:50,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:50,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:50,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:37:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-11-20 07:37:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:37:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-11-20 07:37:50,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:50,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680468161] [2021-11-20 07:37:50,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680468161] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:37:50,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009379959] [2021-11-20 07:37:50,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:50,342 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:37:50,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:37:50,343 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:37:50,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-20 07:37:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:50,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 1649 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 07:37:50,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:37:50,945 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-20 07:37:50,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:37:50,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009379959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:50,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:37:50,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2021-11-20 07:37:50,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103364439] [2021-11-20 07:37:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:50,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:37:50,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:50,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:37:50,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-20 07:37:50,949 INFO L87 Difference]: Start difference. First operand 12888 states and 22783 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-20 07:37:55,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:37:55,143 INFO L93 Difference]: Finished difference Result 25987 states and 46525 transitions. [2021-11-20 07:37:55,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:37:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 127 [2021-11-20 07:37:55,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:37:55,258 INFO L225 Difference]: With dead ends: 25987 [2021-11-20 07:37:55,258 INFO L226 Difference]: Without dead ends: 13117 [2021-11-20 07:37:55,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:37:55,350 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 908 mSDsluCounter, 3648 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 4619 SdHoareTripleChecker+Invalid, 770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:37:55,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 4619 Invalid, 770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:37:55,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13117 states. [2021-11-20 07:37:58,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13117 to 12327. [2021-11-20 07:37:58,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12327 states, 8811 states have (on average 1.5790489161275678) internal successors, (13913), 9522 states have internal predecessors, (13913), 2942 states have call successors, (2942), 434 states have call predecessors, (2942), 573 states have return successors, (5004), 2942 states have call predecessors, (5004), 2932 states have call successors, (5004) [2021-11-20 07:37:58,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12327 states to 12327 states and 21859 transitions. [2021-11-20 07:37:58,555 INFO L78 Accepts]: Start accepts. Automaton has 12327 states and 21859 transitions. Word has length 127 [2021-11-20 07:37:58,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:37:58,556 INFO L470 AbstractCegarLoop]: Abstraction has 12327 states and 21859 transitions. [2021-11-20 07:37:58,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 5 states have internal predecessors, (83), 4 states have call successors, (18), 3 states have call predecessors, (18), 4 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-20 07:37:58,557 INFO L276 IsEmpty]: Start isEmpty. Operand 12327 states and 21859 transitions. [2021-11-20 07:37:58,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-11-20 07:37:58,562 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:37:58,562 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:37:58,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-20 07:37:58,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_64a39fe2-4d94-45da-b60f-bc1cb254b3e1/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-20 07:37:58,776 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:37:58,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:37:58,777 INFO L85 PathProgramCache]: Analyzing trace with hash 200153444, now seen corresponding path program 1 times [2021-11-20 07:37:58,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:37:58,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441385824] [2021-11-20 07:37:58,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:37:58,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:37:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:58,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:58,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:59,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:37:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:37:59,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:37:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:37:59,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:37:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:37:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:37:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-11-20 07:37:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-11-20 07:37:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:37:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:37:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-11-20 07:37:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-11-20 07:37:59,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:37:59,160 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-20 07:37:59,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:37:59,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441385824] [2021-11-20 07:37:59,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441385824] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:37:59,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:37:59,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:37:59,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168665103] [2021-11-20 07:37:59,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:37:59,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:37:59,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:37:59,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:37:59,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:37:59,165 INFO L87 Difference]: Start difference. First operand 12327 states and 21859 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 07:38:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:29,294 INFO L93 Difference]: Finished difference Result 55086 states and 110103 transitions. [2021-11-20 07:38:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 07:38:29,295 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 135 [2021-11-20 07:38:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:29,998 INFO L225 Difference]: With dead ends: 55086 [2021-11-20 07:38:29,998 INFO L226 Difference]: Without dead ends: 42777 [2021-11-20 07:38:30,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-20 07:38:30,119 INFO L933 BasicCegarLoop]: 1207 mSDtfsCounter, 2979 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 8609 mSolverCounterSat, 2090 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3096 SdHoareTripleChecker+Valid, 4421 SdHoareTripleChecker+Invalid, 10699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2090 IncrementalHoareTripleChecker+Valid, 8609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:30,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3096 Valid, 4421 Invalid, 10699 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2090 Valid, 8609 Invalid, 0 Unknown, 0 Unchecked, 15.3s Time] [2021-11-20 07:38:30,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42777 states. [2021-11-20 07:38:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42777 to 23441. [2021-11-20 07:38:36,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23441 states, 17072 states have (on average 1.5741565135895033) internal successors, (26874), 18301 states have internal predecessors, (26874), 5187 states have call successors, (5187), 862 states have call predecessors, (5187), 1181 states have return successors, (10010), 5197 states have call predecessors, (10010), 5169 states have call successors, (10010) [2021-11-20 07:38:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23441 states to 23441 states and 42071 transitions. [2021-11-20 07:38:37,187 INFO L78 Accepts]: Start accepts. Automaton has 23441 states and 42071 transitions. Word has length 135 [2021-11-20 07:38:37,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:37,188 INFO L470 AbstractCegarLoop]: Abstraction has 23441 states and 42071 transitions. [2021-11-20 07:38:37,188 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, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2021-11-20 07:38:37,188 INFO L276 IsEmpty]: Start isEmpty. Operand 23441 states and 42071 transitions. [2021-11-20 07:38:37,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-20 07:38:37,194 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:37,194 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:37,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 07:38:37,195 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:37,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:37,195 INFO L85 PathProgramCache]: Analyzing trace with hash -117498133, now seen corresponding path program 1 times [2021-11-20 07:38:37,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:37,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574014048] [2021-11-20 07:38:37,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:37,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:38:37,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:37,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:38:37,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:37,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:38:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:38:37,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:38:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:38:37,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:38:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-20 07:38:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:38:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:38:37,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:37,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:38:37,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-11-20 07:38:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:38:37,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-20 07:38:37,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574014048] [2021-11-20 07:38:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574014048] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:37,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:37,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:38:37,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468389257] [2021-11-20 07:38:37,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:37,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:38:37,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:37,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:38:37,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:38:37,517 INFO L87 Difference]: Start difference. First operand 23441 states and 42071 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:38:50,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:38:50,406 INFO L93 Difference]: Finished difference Result 52640 states and 100119 transitions. [2021-11-20 07:38:50,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:38:50,407 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 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 136 [2021-11-20 07:38:50,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:38:50,628 INFO L225 Difference]: With dead ends: 52640 [2021-11-20 07:38:50,628 INFO L226 Difference]: Without dead ends: 29217 [2021-11-20 07:38:50,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:38:50,818 INFO L933 BasicCegarLoop]: 886 mSDtfsCounter, 1480 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 529 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 3099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 529 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:38:50,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1592 Valid, 2163 Invalid, 3099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [529 Valid, 2570 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2021-11-20 07:38:50,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29217 states. [2021-11-20 07:38:56,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29217 to 23521. [2021-11-20 07:38:56,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23521 states, 17144 states have (on average 1.5722118525431639) internal successors, (26954), 18357 states have internal predecessors, (26954), 5187 states have call successors, (5187), 894 states have call predecessors, (5187), 1189 states have return successors, (9970), 5189 states have call predecessors, (9970), 5169 states have call successors, (9970) [2021-11-20 07:38:56,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23521 states to 23521 states and 42111 transitions. [2021-11-20 07:38:56,924 INFO L78 Accepts]: Start accepts. Automaton has 23521 states and 42111 transitions. Word has length 136 [2021-11-20 07:38:56,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:38:56,925 INFO L470 AbstractCegarLoop]: Abstraction has 23521 states and 42111 transitions. [2021-11-20 07:38:56,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-20 07:38:56,925 INFO L276 IsEmpty]: Start isEmpty. Operand 23521 states and 42111 transitions. [2021-11-20 07:38:56,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-11-20 07:38:56,929 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:38:56,930 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:38:56,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 07:38:56,930 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:38:56,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:38:56,930 INFO L85 PathProgramCache]: Analyzing trace with hash -802390724, now seen corresponding path program 1 times [2021-11-20 07:38:56,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:38:56,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919875689] [2021-11-20 07:38:56,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:38:56,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:38:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:38:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:38:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-20 07:38:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-20 07:38:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-20 07:38:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-11-20 07:38:57,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-20 07:38:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-20 07:38:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-11-20 07:38:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:57,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-20 07:38:57,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-20 07:38:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-20 07:38:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-20 07:38:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-20 07:38:57,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-11-20 07:38:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:38:57,299 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 07:38:57,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:38:57,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919875689] [2021-11-20 07:38:57,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919875689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:38:57,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:38:57,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-20 07:38:57,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282715332] [2021-11-20 07:38:57,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:38:57,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 07:38:57,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:38:57,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 07:38:57,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-20 07:38:57,302 INFO L87 Difference]: Start difference. First operand 23521 states and 42111 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, (20), 6 states have call predecessors, (20), 3 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18)