./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:51:09,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:51:09,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:51:09,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:51:09,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:51:09,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:51:09,112 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:51:09,114 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:51:09,115 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:51:09,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:51:09,117 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:51:09,118 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:51:09,118 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:51:09,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:51:09,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:51:09,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:51:09,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:51:09,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:51:09,124 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:51:09,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:51:09,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:51:09,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:51:09,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:51:09,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:51:09,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:51:09,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:51:09,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:51:09,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:51:09,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:51:09,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:51:09,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:51:09,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:51:09,137 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:51:09,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:51:09,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:51:09,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:51:09,139 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:51:09,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:51:09,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:51:09,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:51:09,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:51:09,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 22:51:09,158 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:51:09,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:51:09,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:51:09,158 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:51:09,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:51:09,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:51:09,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:51:09,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:51:09,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:51:09,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:51:09,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:51:09,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:51:09,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:51:09,162 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:51:09,163 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:51:09,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:51:09,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:51:09,163 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_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2021-12-06 22:51:09,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:51:09,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:51:09,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:51:09,364 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:51:09,365 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:51:09,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-12-06 22:51:09,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/data/854e80ef6/9b07d4f7daab4ab586f575db00c297df/FLAG9571137ac [2021-12-06 22:51:09,918 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:51:09,919 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2021-12-06 22:51:09,934 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/data/854e80ef6/9b07d4f7daab4ab586f575db00c297df/FLAG9571137ac [2021-12-06 22:51:10,411 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/data/854e80ef6/9b07d4f7daab4ab586f575db00c297df [2021-12-06 22:51:10,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:51:10,417 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:51:10,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:51:10,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:51:10,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:51:10,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:10,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611872ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10, skipping insertion in model container [2021-12-06 22:51:10,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:10,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:51:10,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:51:10,682 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_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-12-06 22:51:10,813 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:51:10,822 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:51:10,849 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_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c[14523,14536] [2021-12-06 22:51:10,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:51:10,946 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:51:10,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10 WrapperNode [2021-12-06 22:51:10,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:51:10,947 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:51:10,947 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:51:10,947 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:51:10,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:10,979 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,016 INFO L137 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 949 [2021-12-06 22:51:11,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:51:11,017 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:51:11,017 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:51:11,017 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:51:11,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,071 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:51:11,072 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:51:11,072 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:51:11,072 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:51:11,073 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (1/1) ... [2021-12-06 22:51:11,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:51:11,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:51:11,105 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:51:11,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:51:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:51:11,137 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2021-12-06 22:51:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 22:51:11,138 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2021-12-06 22:51:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 22:51:11,139 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 22:51:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 22:51:11,140 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 22:51:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 22:51:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 22:51:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 22:51:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 22:51:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:51:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2021-12-06 22:51:11,141 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2021-12-06 22:51:11,151 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 22:51:11,151 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 22:51:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 22:51:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 22:51:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 22:51:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 22:51:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2021-12-06 22:51:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2021-12-06 22:51:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:51:11,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:51:11,152 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 22:51:11,153 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 22:51:11,274 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:51:11,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:51:11,928 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:51:11,938 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:51:11,938 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 22:51:11,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:51:11 BoogieIcfgContainer [2021-12-06 22:51:11,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:51:11,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:51:11,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:51:11,945 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:51:11,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:51:10" (1/3) ... [2021-12-06 22:51:11,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e8919c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:51:11, skipping insertion in model container [2021-12-06 22:51:11,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:51:10" (2/3) ... [2021-12-06 22:51:11,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27e8919c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:51:11, skipping insertion in model container [2021-12-06 22:51:11,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:51:11" (3/3) ... [2021-12-06 22:51:11,947 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2021-12-06 22:51:11,951 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:51:11,951 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:51:11,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:51:11,994 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 22:51:11,995 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:51:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2021-12-06 22:51:12,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 22:51:12,029 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:12,030 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:12,030 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:12,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:12,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1554402963, now seen corresponding path program 1 times [2021-12-06 22:51:12,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:12,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597339916] [2021-12-06 22:51:12,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:12,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:12,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:12,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:12,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 22:51:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:51:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 22:51:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:12,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:12,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:12,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597339916] [2021-12-06 22:51:12,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597339916] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:12,639 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:12,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745298357] [2021-12-06 22:51:12,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:12,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:12,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:12,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:12,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:12,675 INFO L87 Difference]: Start difference. First operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:17,250 INFO L93 Difference]: Finished difference Result 1491 states and 2561 transitions. [2021-12-06 22:51:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2021-12-06 22:51:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:17,273 INFO L225 Difference]: With dead ends: 1491 [2021-12-06 22:51:17,273 INFO L226 Difference]: Without dead ends: 890 [2021-12-06 22:51:17,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:17,284 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 1581 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 5144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:17,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1690 Valid, 3313 Invalid, 5144 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [463 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 22:51:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2021-12-06 22:51:17,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 608. [2021-12-06 22:51:17,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 491 states have internal predecessors, (785), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2021-12-06 22:51:17,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1002 transitions. [2021-12-06 22:51:17,413 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1002 transitions. Word has length 67 [2021-12-06 22:51:17,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:17,414 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 1002 transitions. [2021-12-06 22:51:17,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:17,414 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1002 transitions. [2021-12-06 22:51:17,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:51:17,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:17,419 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:17,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:51:17,419 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:17,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:17,420 INFO L85 PathProgramCache]: Analyzing trace with hash -351252067, now seen corresponding path program 1 times [2021-12-06 22:51:17,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:17,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576725292] [2021-12-06 22:51:17,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:17,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:17,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:51:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:17,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:51:17,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:17,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:17,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:17,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576725292] [2021-12-06 22:51:17,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576725292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:17,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:17,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:17,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391302468] [2021-12-06 22:51:17,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:17,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:17,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:17,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:17,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:17,713 INFO L87 Difference]: Start difference. First operand 608 states and 1002 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:22,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:22,040 INFO L93 Difference]: Finished difference Result 1485 states and 2525 transitions. [2021-12-06 22:51:22,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:51:22,041 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 68 [2021-12-06 22:51:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:22,050 INFO L225 Difference]: With dead ends: 1485 [2021-12-06 22:51:22,051 INFO L226 Difference]: Without dead ends: 893 [2021-12-06 22:51:22,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:51:22,056 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 909 mSDsluCounter, 2437 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 3311 SdHoareTripleChecker+Invalid, 5156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:22,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1018 Valid, 3311 Invalid, 5156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [230 Valid, 4926 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-06 22:51:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-06 22:51:22,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 608. [2021-12-06 22:51:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.664543524416136) internal successors, (784), 491 states have internal predecessors, (784), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2021-12-06 22:51:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1001 transitions. [2021-12-06 22:51:22,133 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1001 transitions. Word has length 68 [2021-12-06 22:51:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 608 states and 1001 transitions. [2021-12-06 22:51:22,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1001 transitions. [2021-12-06 22:51:22,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 22:51:22,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:22,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:22,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:51:22,136 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:22,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:22,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1979877755, now seen corresponding path program 1 times [2021-12-06 22:51:22,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:22,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171662899] [2021-12-06 22:51:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:22,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:51:22,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:51:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 22:51:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:22,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:22,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:22,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171662899] [2021-12-06 22:51:22,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171662899] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:22,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:22,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:51:22,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308511901] [2021-12-06 22:51:22,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:22,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:51:22,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:22,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:51:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:51:22,363 INFO L87 Difference]: Start difference. First operand 608 states and 1001 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:51:25,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:25,569 INFO L93 Difference]: Finished difference Result 1476 states and 2505 transitions. [2021-12-06 22:51:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 22:51:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2021-12-06 22:51:25,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:25,575 INFO L225 Difference]: With dead ends: 1476 [2021-12-06 22:51:25,575 INFO L226 Difference]: Without dead ends: 853 [2021-12-06 22:51:25,578 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:51:25,579 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 1470 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 2279 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1578 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 2731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 2279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:25,579 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1578 Valid, 1936 Invalid, 2731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 2279 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 22:51:25,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2021-12-06 22:51:25,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 584. [2021-12-06 22:51:25,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 450 states have (on average 1.6555555555555554) internal successors, (745), 468 states have internal predecessors, (745), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:25,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 958 transitions. [2021-12-06 22:51:25,628 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 958 transitions. Word has length 68 [2021-12-06 22:51:25,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:25,628 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 958 transitions. [2021-12-06 22:51:25,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 22:51:25,628 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 958 transitions. [2021-12-06 22:51:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-06 22:51:25,634 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:25,634 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:25,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:51:25,634 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:25,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:25,635 INFO L85 PathProgramCache]: Analyzing trace with hash 815635743, now seen corresponding path program 1 times [2021-12-06 22:51:25,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:25,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082515390] [2021-12-06 22:51:25,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:25,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:25,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:51:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 22:51:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 22:51:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:25,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:25,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:25,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082515390] [2021-12-06 22:51:25,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082515390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:25,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:25,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:25,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376075996] [2021-12-06 22:51:25,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:25,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:25,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:25,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:25,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:25,877 INFO L87 Difference]: Start difference. First operand 584 states and 958 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:29,783 INFO L93 Difference]: Finished difference Result 1439 states and 2436 transitions. [2021-12-06 22:51:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2021-12-06 22:51:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:29,801 INFO L225 Difference]: With dead ends: 1439 [2021-12-06 22:51:29,802 INFO L226 Difference]: Without dead ends: 847 [2021-12-06 22:51:29,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:29,807 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 1505 mSDsluCounter, 2383 mSDsCounter, 0 mSdLazyCounter, 4522 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 4970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 4522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:29,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 3249 Invalid, 4970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 4522 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 22:51:29,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-12-06 22:51:29,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2021-12-06 22:51:29,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6486486486486487) internal successors, (732), 462 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:29,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 945 transitions. [2021-12-06 22:51:29,877 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 945 transitions. Word has length 69 [2021-12-06 22:51:29,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:29,877 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 945 transitions. [2021-12-06 22:51:29,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:29,878 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 945 transitions. [2021-12-06 22:51:29,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-12-06 22:51:29,879 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:29,879 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:29,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:51:29,879 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:29,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:29,879 INFO L85 PathProgramCache]: Analyzing trace with hash -691110395, now seen corresponding path program 1 times [2021-12-06 22:51:29,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:29,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941726251] [2021-12-06 22:51:29,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:29,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:29,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:30,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:30,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:30,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:51:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:51:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 22:51:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:30,099 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941726251] [2021-12-06 22:51:30,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941726251] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:30,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:30,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:30,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199406337] [2021-12-06 22:51:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:30,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:30,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:30,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:30,101 INFO L87 Difference]: Start difference. First operand 578 states and 945 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:33,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:33,860 INFO L93 Difference]: Finished difference Result 1409 states and 2385 transitions. [2021-12-06 22:51:33,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:33,861 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 70 [2021-12-06 22:51:33,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:33,866 INFO L225 Difference]: With dead ends: 1409 [2021-12-06 22:51:33,866 INFO L226 Difference]: Without dead ends: 847 [2021-12-06 22:51:33,868 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:33,868 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 1450 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 4455 mSolverCounterSat, 452 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 4907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 4455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:33,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 3191 Invalid, 4907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 4455 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-06 22:51:33,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-12-06 22:51:33,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2021-12-06 22:51:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6463963963963963) internal successors, (731), 462 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 944 transitions. [2021-12-06 22:51:33,917 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 944 transitions. Word has length 70 [2021-12-06 22:51:33,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:33,918 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 944 transitions. [2021-12-06 22:51:33,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 944 transitions. [2021-12-06 22:51:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-06 22:51:33,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:33,919 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:33,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:51:33,919 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:33,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:33,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1448488452, now seen corresponding path program 1 times [2021-12-06 22:51:33,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:33,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89786470] [2021-12-06 22:51:33,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:33,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 22:51:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 22:51:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 22:51:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:34,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:34,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:34,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89786470] [2021-12-06 22:51:34,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89786470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:34,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:34,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:34,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002915417] [2021-12-06 22:51:34,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:34,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:34,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:34,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:34,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:34,144 INFO L87 Difference]: Start difference. First operand 578 states and 944 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:38,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:38,184 INFO L93 Difference]: Finished difference Result 1427 states and 2405 transitions. [2021-12-06 22:51:38,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:38,184 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2021-12-06 22:51:38,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:38,189 INFO L225 Difference]: With dead ends: 1427 [2021-12-06 22:51:38,189 INFO L226 Difference]: Without dead ends: 841 [2021-12-06 22:51:38,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:38,192 INFO L933 BasicCegarLoop]: 846 mSDtfsCounter, 1485 mSDsluCounter, 2345 mSDsCounter, 0 mSdLazyCounter, 4452 mSolverCounterSat, 450 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1593 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 4902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 4452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:38,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1593 Valid, 3191 Invalid, 4902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 4452 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:51:38,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-12-06 22:51:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2021-12-06 22:51:38,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.639269406392694) internal successors, (718), 456 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:38,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 931 transitions. [2021-12-06 22:51:38,249 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 931 transitions. Word has length 71 [2021-12-06 22:51:38,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:38,249 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 931 transitions. [2021-12-06 22:51:38,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:38,249 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 931 transitions. [2021-12-06 22:51:38,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 22:51:38,250 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:38,250 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:38,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:51:38,251 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:38,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:38,251 INFO L85 PathProgramCache]: Analyzing trace with hash -5126265, now seen corresponding path program 1 times [2021-12-06 22:51:38,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:38,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342099967] [2021-12-06 22:51:38,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:38,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:38,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:38,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 22:51:38,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 22:51:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 22:51:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:38,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:38,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:38,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342099967] [2021-12-06 22:51:38,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342099967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:38,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:38,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:38,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102496565] [2021-12-06 22:51:38,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:38,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:38,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:38,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:38,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:38,482 INFO L87 Difference]: Start difference. First operand 572 states and 931 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:42,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:42,436 INFO L93 Difference]: Finished difference Result 1397 states and 2356 transitions. [2021-12-06 22:51:42,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:42,437 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 72 [2021-12-06 22:51:42,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:42,441 INFO L225 Difference]: With dead ends: 1397 [2021-12-06 22:51:42,441 INFO L226 Difference]: Without dead ends: 841 [2021-12-06 22:51:42,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:42,444 INFO L933 BasicCegarLoop]: 812 mSDtfsCounter, 842 mSDsluCounter, 2358 mSDsCounter, 0 mSdLazyCounter, 4512 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 4742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 4512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:42,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [950 Valid, 3170 Invalid, 4742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 4512 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:51:42,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2021-12-06 22:51:42,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2021-12-06 22:51:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 456 states have internal predecessors, (717), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 930 transitions. [2021-12-06 22:51:42,492 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 930 transitions. Word has length 72 [2021-12-06 22:51:42,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:42,492 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 930 transitions. [2021-12-06 22:51:42,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:42,492 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 930 transitions. [2021-12-06 22:51:42,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 22:51:42,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:42,494 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:42,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:51:42,494 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:42,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:42,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1976267521, now seen corresponding path program 1 times [2021-12-06 22:51:42,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:42,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371463877] [2021-12-06 22:51:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:42,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:51:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:51:42,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:42,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:42,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371463877] [2021-12-06 22:51:42,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371463877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:42,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:42,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:42,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251175564] [2021-12-06 22:51:42,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:42,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:42,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:42,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:42,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:42,699 INFO L87 Difference]: Start difference. First operand 572 states and 930 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:46,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:46,903 INFO L93 Difference]: Finished difference Result 1418 states and 2378 transitions. [2021-12-06 22:51:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:51:46,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-12-06 22:51:46,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:46,909 INFO L225 Difference]: With dead ends: 1418 [2021-12-06 22:51:46,909 INFO L226 Difference]: Without dead ends: 862 [2021-12-06 22:51:46,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:51:46,912 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 834 mSDsluCounter, 2395 mSDsCounter, 0 mSdLazyCounter, 4546 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 4775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 4546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:46,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 3214 Invalid, 4775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 4546 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 22:51:46,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2021-12-06 22:51:46,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 577. [2021-12-06 22:51:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 461 states have internal predecessors, (722), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2021-12-06 22:51:46,972 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 73 [2021-12-06 22:51:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:46,972 INFO L470 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2021-12-06 22:51:46,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2021-12-06 22:51:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 22:51:46,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:46,973 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:46,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:51:46,973 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:46,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1518882784, now seen corresponding path program 1 times [2021-12-06 22:51:46,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:46,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494149642] [2021-12-06 22:51:46,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:46,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:47,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:51:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 22:51:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:51:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:47,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:47,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:47,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494149642] [2021-12-06 22:51:47,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494149642] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:47,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:47,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:47,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300033549] [2021-12-06 22:51:47,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:47,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:47,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:47,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:47,165 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:51,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:51,275 INFO L93 Difference]: Finished difference Result 1420 states and 2377 transitions. [2021-12-06 22:51:51,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:51,276 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2021-12-06 22:51:51,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:51,281 INFO L225 Difference]: With dead ends: 1420 [2021-12-06 22:51:51,281 INFO L226 Difference]: Without dead ends: 835 [2021-12-06 22:51:51,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:51,283 INFO L933 BasicCegarLoop]: 839 mSDtfsCounter, 858 mSDsluCounter, 2422 mSDsCounter, 0 mSdLazyCounter, 4524 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 3261 SdHoareTripleChecker+Invalid, 4751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 4524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:51,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 3261 Invalid, 4751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 4524 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2021-12-06 22:51:51,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-12-06 22:51:51,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2021-12-06 22:51:51,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 450 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:51,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2021-12-06 22:51:51,330 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 73 [2021-12-06 22:51:51,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:51,331 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2021-12-06 22:51:51,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:51,331 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2021-12-06 22:51:51,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:51:51,332 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:51,332 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:51,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:51:51,332 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:51,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:51,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1024412364, now seen corresponding path program 1 times [2021-12-06 22:51:51,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:51,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346495067] [2021-12-06 22:51:51,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:51,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 22:51:51,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:51:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:51:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:51,517 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:51,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:51,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346495067] [2021-12-06 22:51:51,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346495067] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:51,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:51,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:51,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796877187] [2021-12-06 22:51:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:51,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:51,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:51,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:51,519 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:55,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:55,614 INFO L93 Difference]: Finished difference Result 1397 states and 2337 transitions. [2021-12-06 22:51:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:51:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-12-06 22:51:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:55,619 INFO L225 Difference]: With dead ends: 1397 [2021-12-06 22:51:55,619 INFO L226 Difference]: Without dead ends: 847 [2021-12-06 22:51:55,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:51:55,622 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 805 mSDsluCounter, 2404 mSDsCounter, 0 mSdLazyCounter, 4459 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 4685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 4459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:55,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 3212 Invalid, 4685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 4459 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:51:55,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-12-06 22:51:55,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 572. [2021-12-06 22:51:55,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 456 states have internal predecessors, (709), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:55,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2021-12-06 22:51:55,673 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 74 [2021-12-06 22:51:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:55,674 INFO L470 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2021-12-06 22:51:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2021-12-06 22:51:55,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 22:51:55,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:55,675 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:55,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:51:55,675 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:55,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:55,675 INFO L85 PathProgramCache]: Analyzing trace with hash -820954802, now seen corresponding path program 1 times [2021-12-06 22:51:55,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:55,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724413162] [2021-12-06 22:51:55,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:55,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:51:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:51:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:51:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 22:51:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 22:51:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:51:55,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:51:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:51:55,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:51:55,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724413162] [2021-12-06 22:51:55,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724413162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:51:55,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:51:55,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:51:55,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692635731] [2021-12-06 22:51:55,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:51:55,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:51:55,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:51:55,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:51:55,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:51:55,876 INFO L87 Difference]: Start difference. First operand 572 states and 922 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:59,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:51:59,858 INFO L93 Difference]: Finished difference Result 1400 states and 2338 transitions. [2021-12-06 22:51:59,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:51:59,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2021-12-06 22:51:59,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:51:59,862 INFO L225 Difference]: With dead ends: 1400 [2021-12-06 22:51:59,863 INFO L226 Difference]: Without dead ends: 835 [2021-12-06 22:51:59,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:51:59,865 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 822 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 4446 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 4446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:51:59,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [930 Valid, 3200 Invalid, 4670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 4446 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:51:59,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2021-12-06 22:51:59,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2021-12-06 22:51:59,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.625) internal successors, (702), 450 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2021-12-06 22:51:59,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2021-12-06 22:51:59,928 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 74 [2021-12-06 22:51:59,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:51:59,928 INFO L470 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2021-12-06 22:51:59,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:51:59,928 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2021-12-06 22:51:59,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 22:51:59,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:51:59,929 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:51:59,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 22:51:59,929 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:51:59,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:51:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -931862683, now seen corresponding path program 1 times [2021-12-06 22:51:59,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:51:59,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855452691] [2021-12-06 22:51:59,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:51:59,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:51:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:52:00,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:52:00,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:00,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855452691] [2021-12-06 22:52:00,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855452691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:00,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:00,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:52:00,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165659027] [2021-12-06 22:52:00,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:00,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:52:00,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:00,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:52:00,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:52:00,130 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 22:52:06,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:06,805 INFO L93 Difference]: Finished difference Result 2158 states and 3662 transitions. [2021-12-06 22:52:06,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:52:06,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2021-12-06 22:52:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:06,814 INFO L225 Difference]: With dead ends: 2158 [2021-12-06 22:52:06,814 INFO L226 Difference]: Without dead ends: 1610 [2021-12-06 22:52:06,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:52:06,817 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 3222 mSDsluCounter, 1809 mSDsCounter, 0 mSdLazyCounter, 5230 mSolverCounterSat, 1194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3359 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 6424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1194 IncrementalHoareTripleChecker+Valid, 5230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:06,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3359 Valid, 2690 Invalid, 6424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1194 Valid, 5230 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-06 22:52:06,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2021-12-06 22:52:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1224. [2021-12-06 22:52:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 896 states have (on average 1.578125) internal successors, (1414), 950 states have internal predecessors, (1414), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2021-12-06 22:52:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2034 transitions. [2021-12-06 22:52:06,958 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2034 transitions. Word has length 75 [2021-12-06 22:52:06,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:06,958 INFO L470 AbstractCegarLoop]: Abstraction has 1224 states and 2034 transitions. [2021-12-06 22:52:06,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2021-12-06 22:52:06,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2034 transitions. [2021-12-06 22:52:06,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 22:52:06,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:06,959 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:06,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:52:06,960 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:06,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:06,960 INFO L85 PathProgramCache]: Analyzing trace with hash 461032549, now seen corresponding path program 1 times [2021-12-06 22:52:06,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:06,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859613540] [2021-12-06 22:52:06,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:06,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:52:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:52:07,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:07,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859613540] [2021-12-06 22:52:07,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859613540] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:52:07,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812448436] [2021-12-06 22:52:07,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:07,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:07,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:07,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:52:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:07,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:52:07,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:07,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:52:07,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:52:07,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812448436] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:07,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:52:07,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 22:52:07,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128733506] [2021-12-06 22:52:07,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:07,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:52:07,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:07,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:52:07,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:07,410 INFO L87 Difference]: Start difference. First operand 1224 states and 2034 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:52:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:07,673 INFO L93 Difference]: Finished difference Result 3544 states and 5964 transitions. [2021-12-06 22:52:07,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:52:07,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2021-12-06 22:52:07,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:07,687 INFO L225 Difference]: With dead ends: 3544 [2021-12-06 22:52:07,687 INFO L226 Difference]: Without dead ends: 2338 [2021-12-06 22:52:07,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:07,693 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 879 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:07,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1870 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:52:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2021-12-06 22:52:07,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2277. [2021-12-06 22:52:07,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1670 states have (on average 1.592814371257485) internal successors, (2660), 1778 states have internal predecessors, (2660), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2021-12-06 22:52:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3827 transitions. [2021-12-06 22:52:07,954 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3827 transitions. Word has length 75 [2021-12-06 22:52:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:07,954 INFO L470 AbstractCegarLoop]: Abstraction has 2277 states and 3827 transitions. [2021-12-06 22:52:07,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:52:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3827 transitions. [2021-12-06 22:52:07,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 22:52:07,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:07,955 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:07,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:52:08,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:08,157 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:08,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1788067737, now seen corresponding path program 1 times [2021-12-06 22:52:08,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:08,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657634657] [2021-12-06 22:52:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:08,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:08,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:52:08,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 22:52:08,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657634657] [2021-12-06 22:52:08,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657634657] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:52:08,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227350443] [2021-12-06 22:52:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:08,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:52:08,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:52:08,408 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:52:08,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:52:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:08,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 22:52:08,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:52:08,630 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 22:52:08,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:52:08,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227350443] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:08,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:52:08,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2021-12-06 22:52:08,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516033199] [2021-12-06 22:52:08,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:08,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:52:08,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:08,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:52:08,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:08,631 INFO L87 Difference]: Start difference. First operand 2277 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:52:08,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:08,989 INFO L93 Difference]: Finished difference Result 5185 states and 8787 transitions. [2021-12-06 22:52:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:52:08,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-12-06 22:52:08,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:09,005 INFO L225 Difference]: With dead ends: 5185 [2021-12-06 22:52:09,005 INFO L226 Difference]: Without dead ends: 2926 [2021-12-06 22:52:09,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:09,015 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 877 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:09,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 1806 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:52:09,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-12-06 22:52:09,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2718. [2021-12-06 22:52:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2013 states have (on average 1.6055638350720318) internal successors, (3232), 2138 states have internal predecessors, (3232), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2021-12-06 22:52:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4559 transitions. [2021-12-06 22:52:09,321 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4559 transitions. Word has length 76 [2021-12-06 22:52:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:09,321 INFO L470 AbstractCegarLoop]: Abstraction has 2718 states and 4559 transitions. [2021-12-06 22:52:09,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 22:52:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4559 transitions. [2021-12-06 22:52:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 22:52:09,322 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:09,322 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:09,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 22:52:09,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 22:52:09,523 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:09,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash -13813102, now seen corresponding path program 1 times [2021-12-06 22:52:09,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:09,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400826987] [2021-12-06 22:52:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:09,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:09,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:09,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:52:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 22:52:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:52:09,747 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400826987] [2021-12-06 22:52:09,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400826987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:09,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:09,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:52:09,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399300311] [2021-12-06 22:52:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:09,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:52:09,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:09,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:52:09,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:52:09,749 INFO L87 Difference]: Start difference. First operand 2718 states and 4559 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:52:19,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:19,511 INFO L93 Difference]: Finished difference Result 10012 states and 17830 transitions. [2021-12-06 22:52:19,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:52:19,511 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2021-12-06 22:52:19,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:19,554 INFO L225 Difference]: With dead ends: 10012 [2021-12-06 22:52:19,554 INFO L226 Difference]: Without dead ends: 7312 [2021-12-06 22:52:19,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:52:19,568 INFO L933 BasicCegarLoop]: 974 mSDtfsCounter, 2504 mSDsluCounter, 2211 mSDsCounter, 0 mSdLazyCounter, 5744 mSolverCounterSat, 872 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2647 SdHoareTripleChecker+Valid, 3185 SdHoareTripleChecker+Invalid, 6616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 872 IncrementalHoareTripleChecker+Valid, 5744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:19,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2647 Valid, 3185 Invalid, 6616 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [872 Valid, 5744 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2021-12-06 22:52:19,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2021-12-06 22:52:20,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 6047. [2021-12-06 22:52:20,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4351 states have (on average 1.5835440128706044) internal successors, (6890), 4696 states have internal predecessors, (6890), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2343), 1400 states have call predecessors, (2343), 1396 states have call successors, (2343) [2021-12-06 22:52:20,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 10635 transitions. [2021-12-06 22:52:20,416 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 10635 transitions. Word has length 78 [2021-12-06 22:52:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:20,416 INFO L470 AbstractCegarLoop]: Abstraction has 6047 states and 10635 transitions. [2021-12-06 22:52:20,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-06 22:52:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 10635 transitions. [2021-12-06 22:52:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-06 22:52:20,417 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:20,417 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:20,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:52:20,418 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:20,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1593721713, now seen corresponding path program 1 times [2021-12-06 22:52:20,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:20,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792341907] [2021-12-06 22:52:20,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:20,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:20,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:52:20,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:52:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:20,604 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:52:20,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:20,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792341907] [2021-12-06 22:52:20,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792341907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:20,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:20,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:52:20,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021434235] [2021-12-06 22:52:20,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:20,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:52:20,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:52:20,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:52:20,606 INFO L87 Difference]: Start difference. First operand 6047 states and 10635 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:52:25,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:25,193 INFO L93 Difference]: Finished difference Result 13049 states and 23272 transitions. [2021-12-06 22:52:25,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:52:25,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 79 [2021-12-06 22:52:25,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:25,234 INFO L225 Difference]: With dead ends: 13049 [2021-12-06 22:52:25,234 INFO L226 Difference]: Without dead ends: 7020 [2021-12-06 22:52:25,254 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:25,255 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 801 mSDsluCounter, 1214 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:25,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [909 Valid, 2095 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 22:52:25,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2021-12-06 22:52:26,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6055. [2021-12-06 22:52:26,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 4357 states have (on average 1.5822813862749598) internal successors, (6894), 4702 states have internal predecessors, (6894), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2333), 1398 states have call predecessors, (2333), 1396 states have call successors, (2333) [2021-12-06 22:52:26,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 10629 transitions. [2021-12-06 22:52:26,039 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 10629 transitions. Word has length 79 [2021-12-06 22:52:26,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:26,039 INFO L470 AbstractCegarLoop]: Abstraction has 6055 states and 10629 transitions. [2021-12-06 22:52:26,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:52:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 10629 transitions. [2021-12-06 22:52:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-06 22:52:26,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:26,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:26,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:52:26,041 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:26,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash -650455551, now seen corresponding path program 1 times [2021-12-06 22:52:26,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:26,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105062491] [2021-12-06 22:52:26,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:26,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:26,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:52:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:52:26,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 22:52:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:26,247 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 22:52:26,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:26,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105062491] [2021-12-06 22:52:26,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105062491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:26,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:26,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:52:26,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907961631] [2021-12-06 22:52:26,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:26,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:52:26,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:26,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:52:26,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:52:26,248 INFO L87 Difference]: Start difference. First operand 6055 states and 10629 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:52:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:36,476 INFO L93 Difference]: Finished difference Result 20704 states and 38900 transitions. [2021-12-06 22:52:36,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:52:36,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2021-12-06 22:52:36,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:36,564 INFO L225 Difference]: With dead ends: 20704 [2021-12-06 22:52:36,565 INFO L226 Difference]: Without dead ends: 14667 [2021-12-06 22:52:36,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:52:36,596 INFO L933 BasicCegarLoop]: 1004 mSDtfsCounter, 2475 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 5627 mSolverCounterSat, 847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 6474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 847 IncrementalHoareTripleChecker+Valid, 5627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:36,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 3318 Invalid, 6474 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [847 Valid, 5627 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-06 22:52:36,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2021-12-06 22:52:38,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12004. [2021-12-06 22:52:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12004 states, 8635 states have (on average 1.5792704111175448) internal successors, (13637), 9320 states have internal predecessors, (13637), 2779 states have call successors, (2779), 434 states have call predecessors, (2779), 589 states have return successors, (5226), 2781 states have call predecessors, (5226), 2769 states have call successors, (5226) [2021-12-06 22:52:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 21642 transitions. [2021-12-06 22:52:38,279 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 21642 transitions. Word has length 87 [2021-12-06 22:52:38,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:38,280 INFO L470 AbstractCegarLoop]: Abstraction has 12004 states and 21642 transitions. [2021-12-06 22:52:38,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-06 22:52:38,280 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 21642 transitions. [2021-12-06 22:52:38,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-06 22:52:38,281 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:38,281 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:38,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:52:38,281 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:38,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:38,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1775026134, now seen corresponding path program 1 times [2021-12-06 22:52:38,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:38,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778021583] [2021-12-06 22:52:38,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:38,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:38,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:52:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:52:38,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-06 22:52:38,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:38,455 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 22:52:38,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:38,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778021583] [2021-12-06 22:52:38,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778021583] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:38,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:38,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:52:38,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081162240] [2021-12-06 22:52:38,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:38,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:52:38,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:52:38,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:52:38,456 INFO L87 Difference]: Start difference. First operand 12004 states and 21642 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:52:43,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:43,882 INFO L93 Difference]: Finished difference Result 25897 states and 47846 transitions. [2021-12-06 22:52:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:52:43,883 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2021-12-06 22:52:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:43,957 INFO L225 Difference]: With dead ends: 25897 [2021-12-06 22:52:43,957 INFO L226 Difference]: Without dead ends: 13911 [2021-12-06 22:52:44,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:52:44,005 INFO L933 BasicCegarLoop]: 888 mSDtfsCounter, 808 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 2120 SdHoareTripleChecker+Invalid, 2477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:44,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 2120 Invalid, 2477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 22:52:44,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2021-12-06 22:52:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 12044. [2021-12-06 22:52:45,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12044 states, 8671 states have (on average 1.5773267212547573) internal successors, (13677), 9348 states have internal predecessors, (13677), 2779 states have call successors, (2779), 450 states have call predecessors, (2779), 593 states have return successors, (5212), 2777 states have call predecessors, (5212), 2769 states have call successors, (5212) [2021-12-06 22:52:45,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 21668 transitions. [2021-12-06 22:52:45,673 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 21668 transitions. Word has length 88 [2021-12-06 22:52:45,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:52:45,673 INFO L470 AbstractCegarLoop]: Abstraction has 12044 states and 21668 transitions. [2021-12-06 22:52:45,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-06 22:52:45,673 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 21668 transitions. [2021-12-06 22:52:45,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-06 22:52:45,675 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:52:45,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:52:45,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:52:45,675 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:52:45,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:52:45,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1227574607, now seen corresponding path program 1 times [2021-12-06 22:52:45,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:52:45,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275804967] [2021-12-06 22:52:45,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:52:45,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:52:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:45,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:52:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:52:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:52:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:52:45,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:52:45,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:52:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:52:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:52:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:52:45,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:52:45,908 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-06 22:52:45,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:52:45,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275804967] [2021-12-06 22:52:45,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275804967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:52:45,908 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:52:45,908 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:52:45,908 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194354603] [2021-12-06 22:52:45,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:52:45,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:52:45,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:52:45,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:52:45,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:52:45,909 INFO L87 Difference]: Start difference. First operand 12044 states and 21668 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:52:58,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:52:58,592 INFO L93 Difference]: Finished difference Result 41376 states and 83780 transitions. [2021-12-06 22:52:58,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:52:58,593 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2021-12-06 22:52:58,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:52:58,772 INFO L225 Difference]: With dead ends: 41376 [2021-12-06 22:52:58,772 INFO L226 Difference]: Without dead ends: 29350 [2021-12-06 22:52:58,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:52:58,833 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 2465 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 5677 mSolverCounterSat, 835 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2607 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 6512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 835 IncrementalHoareTripleChecker+Valid, 5677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:52:58,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2607 Valid, 3276 Invalid, 6512 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [835 Valid, 5677 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2021-12-06 22:52:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2021-12-06 22:53:02,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 24023. [2021-12-06 22:53:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 17295 states have (on average 1.5746747614917607) internal successors, (27234), 18644 states have internal predecessors, (27234), 5538 states have call successors, (5538), 894 states have call predecessors, (5538), 1189 states have return successors, (12117), 5548 states have call predecessors, (12117), 5520 states have call successors, (12117) [2021-12-06 22:53:02,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 44889 transitions. [2021-12-06 22:53:02,496 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 44889 transitions. Word has length 97 [2021-12-06 22:53:02,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:02,496 INFO L470 AbstractCegarLoop]: Abstraction has 24023 states and 44889 transitions. [2021-12-06 22:53:02,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-06 22:53:02,496 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 44889 transitions. [2021-12-06 22:53:02,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:53:02,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:02,498 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:02,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 22:53:02,498 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:02,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:02,499 INFO L85 PathProgramCache]: Analyzing trace with hash -203367196, now seen corresponding path program 1 times [2021-12-06 22:53:02,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:02,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467288250] [2021-12-06 22:53:02,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:02,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:53:02,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:02,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:53:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:53:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:53:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:53:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:53:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:53:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:02,667 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 22:53:02,667 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:02,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467288250] [2021-12-06 22:53:02,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467288250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:53:02,668 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:53:02,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:53:02,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592130136] [2021-12-06 22:53:02,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:53:02,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:53:02,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:02,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:53:02,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:53:02,669 INFO L87 Difference]: Start difference. First operand 24023 states and 44889 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:53:10,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:10,419 INFO L93 Difference]: Finished difference Result 51819 states and 101298 transitions. [2021-12-06 22:53:10,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:53:10,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2021-12-06 22:53:10,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:10,624 INFO L225 Difference]: With dead ends: 51819 [2021-12-06 22:53:10,624 INFO L226 Difference]: Without dead ends: 27814 [2021-12-06 22:53:10,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:53:10,719 INFO L933 BasicCegarLoop]: 880 mSDtfsCounter, 810 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 2485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:10,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2098 Invalid, 2485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 22:53:10,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27814 states. [2021-12-06 22:53:14,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27814 to 24103. [2021-12-06 22:53:14,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 17367 states have (on average 1.5727529222087868) internal successors, (27314), 18716 states have internal predecessors, (27314), 5538 states have call successors, (5538), 910 states have call predecessors, (5538), 1197 states have return successors, (12101), 5540 states have call predecessors, (12101), 5520 states have call successors, (12101) [2021-12-06 22:53:14,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 44953 transitions. [2021-12-06 22:53:14,276 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 44953 transitions. Word has length 98 [2021-12-06 22:53:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:14,276 INFO L470 AbstractCegarLoop]: Abstraction has 24103 states and 44953 transitions. [2021-12-06 22:53:14,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:53:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 44953 transitions. [2021-12-06 22:53:14,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-06 22:53:14,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:14,279 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:14,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 22:53:14,279 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:14,279 INFO L85 PathProgramCache]: Analyzing trace with hash 770009700, now seen corresponding path program 1 times [2021-12-06 22:53:14,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:14,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843293228] [2021-12-06 22:53:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:14,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:53:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:14,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:53:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:53:14,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:53:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:53:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:53:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:53:14,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 22:53:14,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:14,473 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-06 22:53:14,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:14,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843293228] [2021-12-06 22:53:14,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843293228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:53:14,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:53:14,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 22:53:14,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600936229] [2021-12-06 22:53:14,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:53:14,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:53:14,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:14,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:53:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 22:53:14,474 INFO L87 Difference]: Start difference. First operand 24103 states and 44953 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:53:31,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:31,227 INFO L93 Difference]: Finished difference Result 82076 states and 183786 transitions. [2021-12-06 22:53:31,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:53:31,227 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2021-12-06 22:53:31,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:31,795 INFO L225 Difference]: With dead ends: 82076 [2021-12-06 22:53:31,795 INFO L226 Difference]: Without dead ends: 57991 [2021-12-06 22:53:31,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:53:31,979 INFO L933 BasicCegarLoop]: 1057 mSDtfsCounter, 2402 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 5784 mSolverCounterSat, 820 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2543 SdHoareTripleChecker+Valid, 3497 SdHoareTripleChecker+Invalid, 6604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 820 IncrementalHoareTripleChecker+Valid, 5784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:31,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2543 Valid, 3497 Invalid, 6604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [820 Valid, 5784 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2021-12-06 22:53:32,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57991 states. [2021-12-06 22:53:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57991 to 48198. [2021-12-06 22:53:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48198 states, 34731 states have (on average 1.5702110506463967) internal successors, (54535), 37424 states have internal predecessors, (54535), 11061 states have call successors, (11061), 1814 states have call predecessors, (11061), 2405 states have return successors, (29854), 11087 states have call predecessors, (29854), 11027 states have call successors, (29854) [2021-12-06 22:53:39,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48198 states to 48198 states and 95450 transitions. [2021-12-06 22:53:39,759 INFO L78 Accepts]: Start accepts. Automaton has 48198 states and 95450 transitions. Word has length 108 [2021-12-06 22:53:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:53:39,759 INFO L470 AbstractCegarLoop]: Abstraction has 48198 states and 95450 transitions. [2021-12-06 22:53:39,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 22:53:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 48198 states and 95450 transitions. [2021-12-06 22:53:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-12-06 22:53:39,762 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:53:39,762 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:53:39,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 22:53:39,762 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:53:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:53:39,762 INFO L85 PathProgramCache]: Analyzing trace with hash 1979288759, now seen corresponding path program 1 times [2021-12-06 22:53:39,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:53:39,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27349423] [2021-12-06 22:53:39,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:53:39,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:53:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:53:39,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:53:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:53:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 22:53:39,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 22:53:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 22:53:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 22:53:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 22:53:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:53:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:53:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:53:39,943 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-06 22:53:39,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:53:39,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27349423] [2021-12-06 22:53:39,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27349423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:53:39,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:53:39,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:53:39,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088612415] [2021-12-06 22:53:39,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:53:39,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:53:39,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:53:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:53:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:53:39,945 INFO L87 Difference]: Start difference. First operand 48198 states and 95450 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:53:52,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:53:52,342 INFO L93 Difference]: Finished difference Result 103818 states and 222852 transitions. [2021-12-06 22:53:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:53:52,343 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2021-12-06 22:53:52,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:53:52,754 INFO L225 Difference]: With dead ends: 103818 [2021-12-06 22:53:52,754 INFO L226 Difference]: Without dead ends: 55590 [2021-12-06 22:53:53,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:53:53,066 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 812 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 2483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:53:53,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [922 Valid, 2062 Invalid, 2483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-06 22:53:53,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55590 states. [2021-12-06 22:54:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55590 to 48166. [2021-12-06 22:54:00,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48166 states, 34744 states have (on average 1.5680117430347686) internal successors, (54479), 37433 states have internal predecessors, (54479), 11008 states have call successors, (11008), 1827 states have call predecessors, (11008), 2413 states have return successors, (29599), 11020 states have call predecessors, (29599), 10974 states have call successors, (29599) [2021-12-06 22:54:00,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48166 states to 48166 states and 95086 transitions. [2021-12-06 22:54:00,874 INFO L78 Accepts]: Start accepts. Automaton has 48166 states and 95086 transitions. Word has length 109 [2021-12-06 22:54:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:00,875 INFO L470 AbstractCegarLoop]: Abstraction has 48166 states and 95086 transitions. [2021-12-06 22:54:00,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-06 22:54:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 48166 states and 95086 transitions. [2021-12-06 22:54:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 22:54:00,882 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:00,882 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:00,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 22:54:00,883 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:54:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:00,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1908107821, now seen corresponding path program 1 times [2021-12-06 22:54:00,883 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:54:00,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100968941] [2021-12-06 22:54:00,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:00,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:54:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:54:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:54:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:54:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:54:01,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:01,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:54:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 22:54:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:54:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:54:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:54:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:54:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:54:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:54:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:54:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:54:01,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:54:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:54:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 22:54:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,384 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 27 proven. 25 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 22:54:01,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:54:01,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100968941] [2021-12-06 22:54:01,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100968941] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:54:01,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1521140034] [2021-12-06 22:54:01,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:01,385 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:54:01,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:54:01,385 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:54:01,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:54:01,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:01,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 2414 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 22:54:01,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:54:01,764 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-06 22:54:01,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:54:01,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1521140034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:01,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:54:01,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2021-12-06 22:54:01,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609214833] [2021-12-06 22:54:01,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:01,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 22:54:01,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:54:01,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 22:54:01,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:54:01,765 INFO L87 Difference]: Start difference. First operand 48166 states and 95086 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:54:12,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:12,091 INFO L93 Difference]: Finished difference Result 108822 states and 222656 transitions. [2021-12-06 22:54:12,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 22:54:12,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 182 [2021-12-06 22:54:12,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:12,622 INFO L225 Difference]: With dead ends: 108822 [2021-12-06 22:54:12,622 INFO L226 Difference]: Without dead ends: 78422 [2021-12-06 22:54:12,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:54:12,840 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 904 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:12,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 1922 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:54:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78422 states. [2021-12-06 22:54:23,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78422 to 78178. [2021-12-06 22:54:23,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78178 states, 56326 states have (on average 1.577495295245535) internal successors, (88854), 60649 states have internal predecessors, (88854), 17934 states have call successors, (17934), 2883 states have call predecessors, (17934), 3917 states have return successors, (51320), 18120 states have call predecessors, (51320), 17884 states have call successors, (51320) [2021-12-06 22:54:24,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78178 states to 78178 states and 158108 transitions. [2021-12-06 22:54:24,451 INFO L78 Accepts]: Start accepts. Automaton has 78178 states and 158108 transitions. Word has length 182 [2021-12-06 22:54:24,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:54:24,452 INFO L470 AbstractCegarLoop]: Abstraction has 78178 states and 158108 transitions. [2021-12-06 22:54:24,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-06 22:54:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 78178 states and 158108 transitions. [2021-12-06 22:54:24,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-12-06 22:54:24,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:54:24,460 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:54:24,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:54:24,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:54:24,661 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:54:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:54:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash 82045170, now seen corresponding path program 1 times [2021-12-06 22:54:24,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:54:24,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573243326] [2021-12-06 22:54:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:54:24,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:54:24,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:54:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:24,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:54:24,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:54:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:54:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:54:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:54:24,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 22:54:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:54:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:54:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:54:25,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:54:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:54:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 22:54:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 22:54:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:54:25,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:54:25,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:54:25,115 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 22:54:25,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:54:25,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573243326] [2021-12-06 22:54:25,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573243326] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:54:25,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:54:25,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 22:54:25,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707060909] [2021-12-06 22:54:25,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:54:25,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 22:54:25,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:54:25,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 22:54:25,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-06 22:54:25,116 INFO L87 Difference]: Start difference. First operand 78178 states and 158108 transitions. Second operand has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:54:58,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:54:58,010 INFO L93 Difference]: Finished difference Result 198494 states and 476594 transitions. [2021-12-06 22:54:58,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 22:54:58,011 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) Word has length 155 [2021-12-06 22:54:58,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:54:59,250 INFO L225 Difference]: With dead ends: 198494 [2021-12-06 22:54:59,250 INFO L226 Difference]: Without dead ends: 137922 [2021-12-06 22:54:59,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=284, Invalid=976, Unknown=0, NotChecked=0, Total=1260 [2021-12-06 22:54:59,810 INFO L933 BasicCegarLoop]: 1029 mSDtfsCounter, 5250 mSDsluCounter, 3742 mSDsCounter, 0 mSdLazyCounter, 9765 mSolverCounterSat, 2230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5379 SdHoareTripleChecker+Valid, 4771 SdHoareTripleChecker+Invalid, 11995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2230 IncrementalHoareTripleChecker+Valid, 9765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:54:59,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5379 Valid, 4771 Invalid, 11995 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2230 Valid, 9765 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2021-12-06 22:54:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137922 states. [2021-12-06 22:55:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137922 to 76578. [2021-12-06 22:55:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76578 states, 56134 states have (on average 1.5703495207895393) internal successors, (88150), 60137 states have internal predecessors, (88150), 16142 states have call successors, (16142), 2883 states have call predecessors, (16142), 4301 states have return successors, (51073), 16616 states have call predecessors, (51073), 16092 states have call successors, (51073) [2021-12-06 22:55:14,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76578 states to 76578 states and 155365 transitions. [2021-12-06 22:55:14,642 INFO L78 Accepts]: Start accepts. Automaton has 76578 states and 155365 transitions. Word has length 155 [2021-12-06 22:55:14,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:55:14,642 INFO L470 AbstractCegarLoop]: Abstraction has 76578 states and 155365 transitions. [2021-12-06 22:55:14,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.384615384615385) internal successors, (109), 6 states have internal predecessors, (109), 3 states have call successors, (20), 7 states have call predecessors, (20), 5 states have return successors, (18), 5 states have call predecessors, (18), 3 states have call successors, (18) [2021-12-06 22:55:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 76578 states and 155365 transitions. [2021-12-06 22:55:14,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 22:55:14,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:55:14,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:55:14,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 22:55:14,650 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:55:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:55:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash -642050207, now seen corresponding path program 1 times [2021-12-06 22:55:14,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:55:14,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173841133] [2021-12-06 22:55:14,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:14,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:55:14,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:55:14,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:55:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:55:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:55:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:14,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:55:14,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:55:15,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:55:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:55:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 22:55:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:55:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:55:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:55:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:55:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 22:55:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 22:55:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,070 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 22:55:15,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:55:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173841133] [2021-12-06 22:55:15,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173841133] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:55:15,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859542605] [2021-12-06 22:55:15,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:15,070 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:55:15,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:55:15,071 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:55:15,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:55:15,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:15,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2148 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:55:15,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:55:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 22:55:15,492 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:55:15,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859542605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:55:15,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:55:15,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 20 [2021-12-06 22:55:15,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408427287] [2021-12-06 22:55:15,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:55:15,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 22:55:15,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:55:15,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 22:55:15,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:55:15,493 INFO L87 Difference]: Start difference. First operand 76578 states and 155365 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 22:55:36,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:55:36,113 INFO L93 Difference]: Finished difference Result 190090 states and 411917 transitions. [2021-12-06 22:55:36,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 22:55:36,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) Word has length 156 [2021-12-06 22:55:36,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:55:36,991 INFO L225 Difference]: With dead ends: 190090 [2021-12-06 22:55:36,991 INFO L226 Difference]: Without dead ends: 112490 [2021-12-06 22:55:37,510 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=925, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 22:55:37,510 INFO L933 BasicCegarLoop]: 1112 mSDtfsCounter, 2188 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 4857 mSolverCounterSat, 646 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 2772 SdHoareTripleChecker+Invalid, 5503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 646 IncrementalHoareTripleChecker+Valid, 4857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:55:37,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2281 Valid, 2772 Invalid, 5503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [646 Valid, 4857 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:55:37,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112490 states. [2021-12-06 22:55:54,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112490 to 105760. [2021-12-06 22:55:54,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105760 states, 77590 states have (on average 1.5735919577265112) internal successors, (122095), 83130 states have internal predecessors, (122095), 22220 states have call successors, (22220), 3907 states have call predecessors, (22220), 5949 states have return successors, (76726), 22933 states have call predecessors, (76726), 22154 states have call successors, (76726) [2021-12-06 22:55:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105760 states to 105760 states and 221041 transitions. [2021-12-06 22:55:55,580 INFO L78 Accepts]: Start accepts. Automaton has 105760 states and 221041 transitions. Word has length 156 [2021-12-06 22:55:55,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:55:55,581 INFO L470 AbstractCegarLoop]: Abstraction has 105760 states and 221041 transitions. [2021-12-06 22:55:55,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 5 states have call successors, (20), 4 states have call predecessors, (20), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2021-12-06 22:55:55,581 INFO L276 IsEmpty]: Start isEmpty. Operand 105760 states and 221041 transitions. [2021-12-06 22:55:55,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-06 22:55:55,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:55:55,589 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:55:55,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 22:55:55,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-12-06 22:55:55,792 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:55:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:55:55,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1690328230, now seen corresponding path program 1 times [2021-12-06 22:55:55,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:55:55,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119218354] [2021-12-06 22:55:55,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:55,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:55:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:55:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:55,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:55,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:55,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:55:55,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:55,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:55,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:55:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:55:56,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:55:56,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:55:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:55:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:55:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:55:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 22:55:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:55:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:55:56,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:55:56,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:55:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:55:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:55:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:55:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:55:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:55:56,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:55:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:55:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:55:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 22:55:56,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:55:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 22:55:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-06 22:55:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,271 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-06 22:55:56,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:55:56,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119218354] [2021-12-06 22:55:56,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119218354] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:55:56,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257215596] [2021-12-06 22:55:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:55:56,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:55:56,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:55:56,273 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:55:56,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 22:55:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:55:56,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 2591 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 22:55:56,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:55:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 155 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2021-12-06 22:55:56,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:55:56,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257215596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:55:56,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:55:56,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 17 [2021-12-06 22:55:56,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808474893] [2021-12-06 22:55:56,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:55:56,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:55:56,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:55:56,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:55:56,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:55:56,848 INFO L87 Difference]: Start difference. First operand 105760 states and 221041 transitions. Second operand has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 22:56:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:56:36,357 INFO L93 Difference]: Finished difference Result 333657 states and 693565 transitions. [2021-12-06 22:56:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:56:36,358 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 251 [2021-12-06 22:56:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:56:38,424 INFO L225 Difference]: With dead ends: 333657 [2021-12-06 22:56:38,424 INFO L226 Difference]: Without dead ends: 227978 [2021-12-06 22:56:39,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:56:39,318 INFO L933 BasicCegarLoop]: 1658 mSDtfsCounter, 3999 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 1033 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4199 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 3578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1033 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:56:39,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4199 Valid, 2555 Invalid, 3578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1033 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 22:56:39,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227978 states. [2021-12-06 22:57:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227978 to 201838. [2021-12-06 22:57:10,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201838 states, 152333 states have (on average 1.5700340700964335) internal successors, (239168), 159488 states have internal predecessors, (239168), 38011 states have call successors, (38011), 7130 states have call predecessors, (38011), 11493 states have return successors, (129732), 39255 states have call predecessors, (129732), 37941 states have call successors, (129732) [2021-12-06 22:57:13,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201838 states to 201838 states and 406911 transitions. [2021-12-06 22:57:13,244 INFO L78 Accepts]: Start accepts. Automaton has 201838 states and 406911 transitions. Word has length 251 [2021-12-06 22:57:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:57:13,245 INFO L470 AbstractCegarLoop]: Abstraction has 201838 states and 406911 transitions. [2021-12-06 22:57:13,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.0) internal successors, (156), 5 states have internal predecessors, (156), 3 states have call successors, (29), 4 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 22:57:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 201838 states and 406911 transitions. [2021-12-06 22:57:13,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-06 22:57:13,277 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:57:13,278 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:57:13,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 22:57:13,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-06 22:57:13,480 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:57:13,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:57:13,481 INFO L85 PathProgramCache]: Analyzing trace with hash -62500552, now seen corresponding path program 1 times [2021-12-06 22:57:13,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:57:13,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325885889] [2021-12-06 22:57:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:13,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:57:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:57:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:57:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:57:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:57:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:57:13,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:57:13,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:57:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:57:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:57:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:57:13,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:57:13,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:57:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:57:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:57:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:57:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:57:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:57:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 22:57:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:57:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 22:57:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:57:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 22:57:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 22:57:14,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:57:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:57:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:57:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 22:57:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-06 22:57:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,078 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 11 proven. 17 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-06 22:57:14,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:57:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325885889] [2021-12-06 22:57:14,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325885889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:57:14,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318182896] [2021-12-06 22:57:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:57:14,079 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:57:14,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:57:14,079 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:57:14,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 22:57:14,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:57:14,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 2608 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:57:14,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:57:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:57:14,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:57:14,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318182896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:57:14,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:57:14,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2021-12-06 22:57:14,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171689117] [2021-12-06 22:57:14,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:57:14,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:57:14,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:57:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:57:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:57:14,507 INFO L87 Difference]: Start difference. First operand 201838 states and 406911 transitions. Second operand has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-06 22:58:24,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:58:24,923 INFO L93 Difference]: Finished difference Result 591882 states and 1501808 transitions. [2021-12-06 22:58:24,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 22:58:24,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 237 [2021-12-06 22:58:24,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:58:29,484 INFO L225 Difference]: With dead ends: 591882 [2021-12-06 22:58:29,484 INFO L226 Difference]: Without dead ends: 390062 [2021-12-06 22:58:32,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2021-12-06 22:58:32,908 INFO L933 BasicCegarLoop]: 1187 mSDtfsCounter, 2222 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 4056 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 3293 SdHoareTripleChecker+Invalid, 4935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 4056 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:58:32,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2324 Valid, 3293 Invalid, 4935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [879 Valid, 4056 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 22:58:33,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390062 states. [2021-12-06 22:59:27,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390062 to 317389. [2021-12-06 22:59:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317389 states, 242087 states have (on average 1.5292270960439842) internal successors, (370206), 251292 states have internal predecessors, (370206), 55811 states have call successors, (55811), 11343 states have call predecessors, (55811), 19490 states have return successors, (254844), 59893 states have call predecessors, (254844), 55724 states have call successors, (254844) [2021-12-06 22:59:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317389 states to 317389 states and 680861 transitions. [2021-12-06 22:59:31,439 INFO L78 Accepts]: Start accepts. Automaton has 317389 states and 680861 transitions. Word has length 237 [2021-12-06 22:59:31,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:59:31,439 INFO L470 AbstractCegarLoop]: Abstraction has 317389 states and 680861 transitions. [2021-12-06 22:59:31,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.714285714285715) internal successors, (166), 7 states have internal predecessors, (166), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-06 22:59:31,440 INFO L276 IsEmpty]: Start isEmpty. Operand 317389 states and 680861 transitions. [2021-12-06 22:59:31,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-06 22:59:31,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:59:31,466 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:59:31,488 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 22:59:31,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-06 22:59:31,667 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:59:31,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:59:31,667 INFO L85 PathProgramCache]: Analyzing trace with hash -638372134, now seen corresponding path program 1 times [2021-12-06 22:59:31,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:59:31,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010952170] [2021-12-06 22:59:31,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:31,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:59:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:59:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 22:59:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 22:59:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 22:59:31,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:59:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:59:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 22:59:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 22:59:31,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 22:59:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-06 22:59:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-06 22:59:32,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:32,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 22:59:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:32,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-06 22:59:32,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:59:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:59:32,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:59:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:59:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 22:59:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 22:59:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:59:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 22:59:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,168 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 11 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2021-12-06 22:59:32,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:59:32,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010952170] [2021-12-06 22:59:32,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010952170] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:59:32,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773809499] [2021-12-06 22:59:32,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:59:32,168 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:59:32,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:59:32,169 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:59:32,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_efb7aa7a-80cc-4e83-805a-4ab6cf60ddc4/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 22:59:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:59:32,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 22:59:32,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:59:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-12-06 22:59:32,623 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:59:32,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773809499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:59:32,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:59:32,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2021-12-06 22:59:32,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520073669] [2021-12-06 22:59:32,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:59:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:59:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:59:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:59:32,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2021-12-06 22:59:32,625 INFO L87 Difference]: Start difference. First operand 317389 states and 680861 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) [2021-12-06 23:00:52,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 23:00:52,118 INFO L93 Difference]: Finished difference Result 750195 states and 2020681 transitions. [2021-12-06 23:00:52,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 23:00:52,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 7 states have internal predecessors, (168), 5 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (28), 5 states have call predecessors, (28), 5 states have call successors, (28) Word has length 239 [2021-12-06 23:00:52,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 23:00:57,793 INFO L225 Difference]: With dead ends: 750195 [2021-12-06 23:00:57,793 INFO L226 Difference]: Without dead ends: 431636 [2021-12-06 23:01:02,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=844, Unknown=0, NotChecked=0, Total=992 [2021-12-06 23:01:02,707 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 2250 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 3967 mSolverCounterSat, 867 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2356 SdHoareTripleChecker+Valid, 3143 SdHoareTripleChecker+Invalid, 4834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 867 IncrementalHoareTripleChecker+Valid, 3967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 23:01:02,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2356 Valid, 3143 Invalid, 4834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [867 Valid, 3967 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 23:01:03,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431636 states.