/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 20:12:33,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:12:33,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:12:33,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:12:33,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:12:33,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:12:33,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:12:33,966 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:12:33,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:12:33,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:12:33,971 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:12:33,973 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:12:33,973 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:12:33,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:12:33,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:12:33,979 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:12:33,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:12:33,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:12:33,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:12:33,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:12:33,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:12:33,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:12:33,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:12:33,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:12:34,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:12:34,002 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:12:34,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:12:34,005 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:12:34,006 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:12:34,007 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:12:34,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:12:34,008 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:12:34,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:12:34,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:12:34,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:12:34,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:12:34,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:12:34,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:12:34,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:12:34,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:12:34,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:12:34,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 20:12:34,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:12:34,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:12:34,062 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:12:34,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:12:34,063 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:12:34,063 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:12:34,063 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:12:34,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:12:34,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:12:34,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:12:34,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:12:34,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:12:34,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:12:34,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:12:34,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:12:34,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:12:34,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:12:34,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:12:34,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:12:34,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:12:34,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:12:34,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:12:34,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:12:34,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:12:34,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:12:34,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:12:34,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:12:34,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:12:34,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:12:34,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:12:34,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:12:34,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:12:34,359 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:12:34,360 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:12:34,361 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:12:34,361 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 20:12:34,427 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbca82583/5f6fc5d06156497c9b6c15ab576c1dce/FLAG6018e240c [2020-08-18 20:12:34,900 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:12:34,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product35.cil.c [2020-08-18 20:12:34,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbca82583/5f6fc5d06156497c9b6c15ab576c1dce/FLAG6018e240c [2020-08-18 20:12:35,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbca82583/5f6fc5d06156497c9b6c15ab576c1dce [2020-08-18 20:12:35,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:12:35,228 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:12:35,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:12:35,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:12:35,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:12:35,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44114950 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35, skipping insertion in model container [2020-08-18 20:12:35,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,245 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:12:35,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:12:35,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:12:35,736 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:12:35,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:12:35,853 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:12:35,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35 WrapperNode [2020-08-18 20:12:35,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:12:35,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:12:35,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:12:35,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:12:35,872 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,941 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,946 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... [2020-08-18 20:12:35,954 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:12:35,955 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:12:35,955 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:12:35,955 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:12:35,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:12:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:12:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:12:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 20:12:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 20:12:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 20:12:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 20:12:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 20:12:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 20:12:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:12:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 20:12:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 20:12:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 20:12:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 20:12:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 20:12:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 20:12:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 20:12:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 20:12:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 20:12:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 20:12:36,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 20:12:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 20:12:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 20:12:36,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 20:12:36,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 20:12:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 20:12:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 20:12:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 20:12:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 20:12:36,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 20:12:36,043 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:12:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:12:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 20:12:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 20:12:36,044 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 20:12:36,049 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 20:12:36,050 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:12:36,051 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 20:12:36,052 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 20:12:36,053 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 20:12:36,054 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 20:12:36,055 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:12:36,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:12:37,158 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:12:37,158 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 20:12:37,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:12:37 BoogieIcfgContainer [2020-08-18 20:12:37,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:12:37,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:12:37,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:12:37,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:12:37,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:12:35" (1/3) ... [2020-08-18 20:12:37,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18abee9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:12:37, skipping insertion in model container [2020-08-18 20:12:37,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:12:35" (2/3) ... [2020-08-18 20:12:37,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18abee9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:12:37, skipping insertion in model container [2020-08-18 20:12:37,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:12:37" (3/3) ... [2020-08-18 20:12:37,178 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product35.cil.c [2020-08-18 20:12:37,188 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:12:37,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:12:37,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:12:37,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:12:37,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:12:37,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:12:37,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:12:37,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:12:37,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:12:37,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:12:37,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:12:37,257 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states. [2020-08-18 20:12:37,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 20:12:37,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:37,270 INFO L422 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] [2020-08-18 20:12:37,270 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:37,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:37,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1963515353, now seen corresponding path program 1 times [2020-08-18 20:12:37,286 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:37,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360484453] [2020-08-18 20:12:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:37,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:37,952 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:37,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:38,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:12:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 20:12:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 20:12:38,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:38,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:38,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360484453] [2020-08-18 20:12:38,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:12:38,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682388310] [2020-08-18 20:12:38,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:12:38,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:38,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:12:38,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:12:38,160 INFO L87 Difference]: Start difference. First operand 167 states. Second operand 4 states. [2020-08-18 20:12:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:39,152 INFO L93 Difference]: Finished difference Result 276 states and 357 transitions. [2020-08-18 20:12:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:12:39,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 20:12:39,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:39,169 INFO L225 Difference]: With dead ends: 276 [2020-08-18 20:12:39,170 INFO L226 Difference]: Without dead ends: 153 [2020-08-18 20:12:39,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:12:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-18 20:12:39,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 124. [2020-08-18 20:12:39,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-18 20:12:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 145 transitions. [2020-08-18 20:12:39,295 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 145 transitions. Word has length 59 [2020-08-18 20:12:39,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:39,295 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 145 transitions. [2020-08-18 20:12:39,295 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:12:39,296 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 145 transitions. [2020-08-18 20:12:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 20:12:39,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:39,301 INFO L422 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] [2020-08-18 20:12:39,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:12:39,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:39,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:39,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1851002156, now seen corresponding path program 1 times [2020-08-18 20:12:39,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:39,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065813472] [2020-08-18 20:12:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,663 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:39,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:39,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:39,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:39,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 20:12:39,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:12:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:39,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:39,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065813472] [2020-08-18 20:12:39,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:39,770 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:39,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977233735] [2020-08-18 20:12:39,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:39,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:39,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:39,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:39,773 INFO L87 Difference]: Start difference. First operand 124 states and 145 transitions. Second operand 9 states. [2020-08-18 20:12:40,119 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:40,444 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:40,682 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:40,893 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:41,876 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:43,005 INFO L93 Difference]: Finished difference Result 423 states and 533 transitions. [2020-08-18 20:12:43,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 20:12:43,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 20:12:43,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:43,016 INFO L225 Difference]: With dead ends: 423 [2020-08-18 20:12:43,017 INFO L226 Difference]: Without dead ends: 327 [2020-08-18 20:12:43,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:12:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-08-18 20:12:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 265. [2020-08-18 20:12:43,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-08-18 20:12:43,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2020-08-18 20:12:43,142 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 64 [2020-08-18 20:12:43,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:43,142 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2020-08-18 20:12:43,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:43,142 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2020-08-18 20:12:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-18 20:12:43,156 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:43,156 INFO L422 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] [2020-08-18 20:12:43,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:12:43,157 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:43,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2013051811, now seen corresponding path program 1 times [2020-08-18 20:12:43,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:43,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389199201] [2020-08-18 20:12:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,506 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:43,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:43,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:43,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:43,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:43,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:12:43,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 20:12:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-18 20:12:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:43,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389199201] [2020-08-18 20:12:43,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:43,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 20:12:43,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308107545] [2020-08-18 20:12:43,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:12:43,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:43,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:12:43,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:12:43,612 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand 7 states. [2020-08-18 20:12:43,959 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:45,418 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:46,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:46,004 INFO L93 Difference]: Finished difference Result 782 states and 1053 transitions. [2020-08-18 20:12:46,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 20:12:46,005 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 72 [2020-08-18 20:12:46,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:46,011 INFO L225 Difference]: With dead ends: 782 [2020-08-18 20:12:46,012 INFO L226 Difference]: Without dead ends: 545 [2020-08-18 20:12:46,015 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-08-18 20:12:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-08-18 20:12:46,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 452. [2020-08-18 20:12:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-08-18 20:12:46,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 561 transitions. [2020-08-18 20:12:46,108 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 561 transitions. Word has length 72 [2020-08-18 20:12:46,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:46,108 INFO L479 AbstractCegarLoop]: Abstraction has 452 states and 561 transitions. [2020-08-18 20:12:46,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:12:46,109 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 561 transitions. [2020-08-18 20:12:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 20:12:46,110 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:46,110 INFO L422 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] [2020-08-18 20:12:46,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:12:46,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:46,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:46,111 INFO L82 PathProgramCache]: Analyzing trace with hash -601082987, now seen corresponding path program 1 times [2020-08-18 20:12:46,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:46,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129831708] [2020-08-18 20:12:46,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,449 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:46,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:46,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:46,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:12:46,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 20:12:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 20:12:46,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:46,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 20:12:46,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129831708] [2020-08-18 20:12:46,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:46,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:46,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341255903] [2020-08-18 20:12:46,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:46,565 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:46,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:46,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:46,565 INFO L87 Difference]: Start difference. First operand 452 states and 561 transitions. Second operand 9 states. [2020-08-18 20:12:46,960 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:47,630 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:48,487 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:48,875 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:49,294 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:49,536 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:12:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:50,153 INFO L93 Difference]: Finished difference Result 948 states and 1227 transitions. [2020-08-18 20:12:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 20:12:50,154 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 20:12:50,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:50,162 INFO L225 Difference]: With dead ends: 948 [2020-08-18 20:12:50,162 INFO L226 Difference]: Without dead ends: 524 [2020-08-18 20:12:50,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 20:12:50,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-08-18 20:12:50,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 449. [2020-08-18 20:12:50,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449 states. [2020-08-18 20:12:50,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 552 transitions. [2020-08-18 20:12:50,248 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 552 transitions. Word has length 70 [2020-08-18 20:12:50,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:50,248 INFO L479 AbstractCegarLoop]: Abstraction has 449 states and 552 transitions. [2020-08-18 20:12:50,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:50,249 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 552 transitions. [2020-08-18 20:12:50,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:12:50,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:50,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:50,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:12:50,251 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:50,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:50,252 INFO L82 PathProgramCache]: Analyzing trace with hash -1418290782, now seen corresponding path program 1 times [2020-08-18 20:12:50,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:50,252 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710414179] [2020-08-18 20:12:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,508 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:50,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:50,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:50,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:50,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:50,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:12:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:12:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:12:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:50,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:50,681 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710414179] [2020-08-18 20:12:50,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:50,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:50,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204231524] [2020-08-18 20:12:50,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:50,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:50,684 INFO L87 Difference]: Start difference. First operand 449 states and 552 transitions. Second operand 9 states. [2020-08-18 20:12:51,167 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:12:52,131 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:12:52,431 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:52,726 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:53,003 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:54,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:54,230 INFO L93 Difference]: Finished difference Result 1360 states and 1888 transitions. [2020-08-18 20:12:54,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 20:12:54,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 20:12:54,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:54,239 INFO L225 Difference]: With dead ends: 1360 [2020-08-18 20:12:54,239 INFO L226 Difference]: Without dead ends: 939 [2020-08-18 20:12:54,242 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:12:54,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2020-08-18 20:12:54,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 795. [2020-08-18 20:12:54,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 20:12:54,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 992 transitions. [2020-08-18 20:12:54,406 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 992 transitions. Word has length 87 [2020-08-18 20:12:54,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:54,408 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 992 transitions. [2020-08-18 20:12:54,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 992 transitions. [2020-08-18 20:12:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-18 20:12:54,413 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:54,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:54,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:12:54,413 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1655372524, now seen corresponding path program 1 times [2020-08-18 20:12:54,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:54,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169679171] [2020-08-18 20:12:54,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,705 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:54,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:54,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:12:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 20:12:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:54,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:54,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-18 20:12:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 20:12:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:54,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169679171] [2020-08-18 20:12:54,808 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:54,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:12:54,809 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409943320] [2020-08-18 20:12:54,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:12:54,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:54,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:12:54,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:12:54,812 INFO L87 Difference]: Start difference. First operand 795 states and 992 transitions. Second operand 6 states. [2020-08-18 20:12:55,299 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:56,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:56,272 INFO L93 Difference]: Finished difference Result 1342 states and 1669 transitions. [2020-08-18 20:12:56,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:12:56,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-08-18 20:12:56,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:56,279 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 20:12:56,279 INFO L226 Difference]: Without dead ends: 783 [2020-08-18 20:12:56,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-08-18 20:12:56,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 783 states. [2020-08-18 20:12:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 783 to 681. [2020-08-18 20:12:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 681 states. [2020-08-18 20:12:56,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 681 states to 681 states and 812 transitions. [2020-08-18 20:12:56,399 INFO L78 Accepts]: Start accepts. Automaton has 681 states and 812 transitions. Word has length 83 [2020-08-18 20:12:56,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:56,399 INFO L479 AbstractCegarLoop]: Abstraction has 681 states and 812 transitions. [2020-08-18 20:12:56,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:12:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 681 states and 812 transitions. [2020-08-18 20:12:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:12:56,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:56,404 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:56,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:12:56,406 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:56,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:56,407 INFO L82 PathProgramCache]: Analyzing trace with hash 765386145, now seen corresponding path program 1 times [2020-08-18 20:12:56,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:56,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734669031] [2020-08-18 20:12:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:56,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,678 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:56,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:56,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:56,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:12:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:12:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:12:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:56,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:56,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734669031] [2020-08-18 20:12:56,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:56,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 20:12:56,800 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477532541] [2020-08-18 20:12:56,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 20:12:56,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:56,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 20:12:56,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 20:12:56,806 INFO L87 Difference]: Start difference. First operand 681 states and 812 transitions. Second operand 9 states. [2020-08-18 20:12:57,808 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:58,164 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:12:58,478 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:58,706 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:12:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:12:59,287 INFO L93 Difference]: Finished difference Result 1456 states and 1829 transitions. [2020-08-18 20:12:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:12:59,288 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-18 20:12:59,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:12:59,294 INFO L225 Difference]: With dead ends: 1456 [2020-08-18 20:12:59,294 INFO L226 Difference]: Without dead ends: 803 [2020-08-18 20:12:59,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 20:12:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2020-08-18 20:12:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 701. [2020-08-18 20:12:59,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 701 states. [2020-08-18 20:12:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 832 transitions. [2020-08-18 20:12:59,399 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 832 transitions. Word has length 87 [2020-08-18 20:12:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:12:59,400 INFO L479 AbstractCegarLoop]: Abstraction has 701 states and 832 transitions. [2020-08-18 20:12:59,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 20:12:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 832 transitions. [2020-08-18 20:12:59,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-18 20:12:59,402 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:12:59,402 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:12:59,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:12:59,402 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:12:59,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:12:59,403 INFO L82 PathProgramCache]: Analyzing trace with hash -2143377757, now seen corresponding path program 1 times [2020-08-18 20:12:59,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:12:59,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723201976] [2020-08-18 20:12:59,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:12:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,681 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:12:59,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:12:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:12:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:12:59,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:12:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:12:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 20:12:59,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:12:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 20:12:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:12:59,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:12:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:12:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-08-18 20:12:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 20:12:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:12:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:12:59,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723201976] [2020-08-18 20:12:59,794 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:12:59,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 20:12:59,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86250003] [2020-08-18 20:12:59,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 20:12:59,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:12:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 20:12:59,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 20:12:59,796 INFO L87 Difference]: Start difference. First operand 701 states and 832 transitions. Second operand 11 states. [2020-08-18 20:13:00,287 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:00,522 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:00,746 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:01,463 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:01,721 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:01,951 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:02,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:02,645 INFO L93 Difference]: Finished difference Result 1322 states and 1646 transitions. [2020-08-18 20:13:02,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 20:13:02,646 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 87 [2020-08-18 20:13:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:02,650 INFO L225 Difference]: With dead ends: 1322 [2020-08-18 20:13:02,650 INFO L226 Difference]: Without dead ends: 649 [2020-08-18 20:13:02,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 20:13:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-08-18 20:13:02,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 576. [2020-08-18 20:13:02,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-08-18 20:13:02,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 668 transitions. [2020-08-18 20:13:02,737 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 668 transitions. Word has length 87 [2020-08-18 20:13:02,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:02,738 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 668 transitions. [2020-08-18 20:13:02,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 20:13:02,738 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 668 transitions. [2020-08-18 20:13:02,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-18 20:13:02,740 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:02,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:02,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 20:13:02,741 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:02,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:02,741 INFO L82 PathProgramCache]: Analyzing trace with hash 858193610, now seen corresponding path program 1 times [2020-08-18 20:13:02,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:02,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385374243] [2020-08-18 20:13:02,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,110 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:03,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:03,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:13:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:03,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 20:13:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:03,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 20:13:03,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 20:13:03,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 20:13:03,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385374243] [2020-08-18 20:13:03,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:13:03,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 20:13:03,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789724826] [2020-08-18 20:13:03,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 20:13:03,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:03,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 20:13:03,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 20:13:03,287 INFO L87 Difference]: Start difference. First operand 576 states and 668 transitions. Second operand 12 states. [2020-08-18 20:13:03,868 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:04,567 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:05,279 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:05,617 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:05,874 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:06,174 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:06,444 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:07,649 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:07,910 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:08,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:08,515 INFO L93 Difference]: Finished difference Result 1645 states and 2041 transitions. [2020-08-18 20:13:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 20:13:08,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 91 [2020-08-18 20:13:08,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:08,527 INFO L225 Difference]: With dead ends: 1645 [2020-08-18 20:13:08,527 INFO L226 Difference]: Without dead ends: 1269 [2020-08-18 20:13:08,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 20:13:08,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2020-08-18 20:13:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1155. [2020-08-18 20:13:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-18 20:13:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1335 transitions. [2020-08-18 20:13:08,715 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1335 transitions. Word has length 91 [2020-08-18 20:13:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:08,717 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1335 transitions. [2020-08-18 20:13:08,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 20:13:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1335 transitions. [2020-08-18 20:13:08,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-18 20:13:08,721 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:08,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:08,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 20:13:08,722 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:08,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:08,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1244109311, now seen corresponding path program 1 times [2020-08-18 20:13:08,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:08,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958619803] [2020-08-18 20:13:08,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,112 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:09,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:09,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:09,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:09,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:09,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:09,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:09,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:13:09,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:09,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-18 20:13:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 20:13:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 20:13:09,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 20:13:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-08-18 20:13:09,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:09,433 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-08-18 20:13:09,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958619803] [2020-08-18 20:13:09,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:09,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 20:13:09,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136383111] [2020-08-18 20:13:09,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 20:13:09,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:09,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 20:13:09,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:13:09,440 INFO L87 Difference]: Start difference. First operand 1155 states and 1335 transitions. Second operand 16 states. [2020-08-18 20:13:10,317 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:10,664 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:10,965 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:11,205 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 20:13:11,855 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:12,190 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:12,594 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:12,881 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:13,711 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:14,368 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:14,652 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:14,968 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:15,422 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:15,903 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 20:13:16,203 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:16,478 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:16,735 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:17,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:17,185 INFO L93 Difference]: Finished difference Result 2146 states and 2551 transitions. [2020-08-18 20:13:17,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 20:13:17,186 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 134 [2020-08-18 20:13:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:17,193 INFO L225 Difference]: With dead ends: 2146 [2020-08-18 20:13:17,193 INFO L226 Difference]: Without dead ends: 1185 [2020-08-18 20:13:17,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=548, Invalid=2002, Unknown=0, NotChecked=0, Total=2550 [2020-08-18 20:13:17,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-08-18 20:13:17,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1065. [2020-08-18 20:13:17,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1065 states. [2020-08-18 20:13:17,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1065 states to 1065 states and 1223 transitions. [2020-08-18 20:13:17,356 INFO L78 Accepts]: Start accepts. Automaton has 1065 states and 1223 transitions. Word has length 134 [2020-08-18 20:13:17,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:17,357 INFO L479 AbstractCegarLoop]: Abstraction has 1065 states and 1223 transitions. [2020-08-18 20:13:17,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 20:13:17,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1065 states and 1223 transitions. [2020-08-18 20:13:17,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-08-18 20:13:17,367 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:17,367 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:13:17,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 20:13:17,368 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:17,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:17,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1284254506, now seen corresponding path program 1 times [2020-08-18 20:13:17,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:17,369 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973179894] [2020-08-18 20:13:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,705 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:17,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:17,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:13:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:13:17,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:17,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:17,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:17,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:17,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:18,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-18 20:13:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:18,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 20:13:18,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-18 20:13:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:18,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-18 20:13:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-08-18 20:13:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 20:13:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:18,154 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-08-18 20:13:18,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973179894] [2020-08-18 20:13:18,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:18,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 20:13:18,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143451693] [2020-08-18 20:13:18,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 20:13:18,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:18,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 20:13:18,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-08-18 20:13:18,160 INFO L87 Difference]: Start difference. First operand 1065 states and 1223 transitions. Second operand 16 states. [2020-08-18 20:13:19,551 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:13:19,814 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:20,078 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:20,329 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:20,581 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:21,192 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:21,700 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 20:13:22,168 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 20:13:22,814 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:24,520 INFO L93 Difference]: Finished difference Result 2947 states and 3535 transitions. [2020-08-18 20:13:24,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-18 20:13:24,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 241 [2020-08-18 20:13:24,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:24,532 INFO L225 Difference]: With dead ends: 2947 [2020-08-18 20:13:24,532 INFO L226 Difference]: Without dead ends: 1803 [2020-08-18 20:13:24,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 551 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=449, Invalid=1807, Unknown=0, NotChecked=0, Total=2256 [2020-08-18 20:13:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2020-08-18 20:13:24,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1431. [2020-08-18 20:13:24,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1431 states. [2020-08-18 20:13:24,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1658 transitions. [2020-08-18 20:13:24,775 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1658 transitions. Word has length 241 [2020-08-18 20:13:24,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:24,776 INFO L479 AbstractCegarLoop]: Abstraction has 1431 states and 1658 transitions. [2020-08-18 20:13:24,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 20:13:24,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1658 transitions. [2020-08-18 20:13:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-08-18 20:13:24,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:24,787 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 20:13:24,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 20:13:24,788 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:24,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:24,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1853664495, now seen corresponding path program 1 times [2020-08-18 20:13:24,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:24,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198399833] [2020-08-18 20:13:24,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,153 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:25,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:25,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:25,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:25,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:13:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:13:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:25,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:13:25,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-18 20:13:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:25,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 20:13:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-08-18 20:13:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2020-08-18 20:13:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 20:13:25,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-18 20:13:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:25,470 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 85 proven. 31 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-08-18 20:13:25,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198399833] [2020-08-18 20:13:25,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:25,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 20:13:25,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402717280] [2020-08-18 20:13:25,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 20:13:25,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:25,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 20:13:25,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:13:25,473 INFO L87 Difference]: Start difference. First operand 1431 states and 1658 transitions. Second operand 17 states. [2020-08-18 20:13:25,951 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:26,260 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:26,538 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:26,782 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 20:13:27,454 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:28,373 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:13:28,748 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:28,998 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:29,567 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:30,180 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:30,423 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 20:13:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:13:30,962 INFO L93 Difference]: Finished difference Result 2569 states and 3040 transitions. [2020-08-18 20:13:30,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-18 20:13:30,963 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 247 [2020-08-18 20:13:30,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:13:30,971 INFO L225 Difference]: With dead ends: 2569 [2020-08-18 20:13:30,971 INFO L226 Difference]: Without dead ends: 1456 [2020-08-18 20:13:30,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=370, Invalid=1436, Unknown=0, NotChecked=0, Total=1806 [2020-08-18 20:13:30,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2020-08-18 20:13:31,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1402. [2020-08-18 20:13:31,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1402 states. [2020-08-18 20:13:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1402 states to 1402 states and 1608 transitions. [2020-08-18 20:13:31,220 INFO L78 Accepts]: Start accepts. Automaton has 1402 states and 1608 transitions. Word has length 247 [2020-08-18 20:13:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:13:31,223 INFO L479 AbstractCegarLoop]: Abstraction has 1402 states and 1608 transitions. [2020-08-18 20:13:31,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 20:13:31,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1402 states and 1608 transitions. [2020-08-18 20:13:31,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-08-18 20:13:31,230 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:13:31,230 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-08-18 20:13:31,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 20:13:31,231 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:13:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:13:31,232 INFO L82 PathProgramCache]: Analyzing trace with hash -276065170, now seen corresponding path program 1 times [2020-08-18 20:13:31,232 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:13:31,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601817631] [2020-08-18 20:13:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:13:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,544 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:13:31,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:13:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:13:31,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:13:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 20:13:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 20:13:31,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 20:13:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:31,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:31,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 20:13:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 20:13:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:31,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:31,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:13:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-18 20:13:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 20:13:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 20:13:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 20:13:31,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 20:13:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-18 20:13:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:13:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-18 20:13:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 20:13:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:13:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 20:13:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-18 20:13:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 20:13:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:13:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 92 proven. 26 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2020-08-18 20:13:31,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1601817631] [2020-08-18 20:13:31,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:13:31,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 20:13:31,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699824347] [2020-08-18 20:13:31,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 20:13:31,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:13:31,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 20:13:31,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2020-08-18 20:13:31,954 INFO L87 Difference]: Start difference. First operand 1402 states and 1608 transitions. Second operand 17 states.