/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:41:33,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:41:33,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:41:33,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:41:33,809 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:41:33,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:41:33,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:41:33,825 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:41:33,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:41:33,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:41:33,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:41:33,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:41:33,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:41:33,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:41:33,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:41:33,840 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:41:33,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:41:33,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:41:33,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:41:33,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:41:33,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:41:33,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:41:33,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:41:33,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:41:33,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:41:33,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:41:33,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:41:33,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:41:33,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:41:33,877 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:41:33,877 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:41:33,878 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:41:33,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:41:33,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:41:33,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:41:33,880 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:41:33,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:41:33,881 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:41:33,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:41:33,882 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:41:33,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:41:33,883 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 [2020-08-19 02:41:33,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:41:33,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:41:33,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:41:33,906 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:41:33,907 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:41:33,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:41:33,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:41:33,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:41:33,907 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:41:33,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:41:33,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:41:33,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:41:33,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:41:33,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:41:33,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:41:33,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:41:33,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:41:33,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:41:33,910 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:41:33,910 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:41:33,910 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:41:33,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:41:33,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:41:33,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:41:33,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:41:33,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:41:33,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:41:33,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:41:33,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:41:33,912 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:41:34,266 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:41:34,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:41:34,291 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:41:34,293 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:41:34,295 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:41:34,296 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 02:41:34,371 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476f45397/6f362a6a55104b5eb5f2f8459bc79a8a/FLAG32d3c1d86 [2020-08-19 02:41:34,901 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:41:34,901 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product49.cil.c [2020-08-19 02:41:34,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476f45397/6f362a6a55104b5eb5f2f8459bc79a8a/FLAG32d3c1d86 [2020-08-19 02:41:35,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/476f45397/6f362a6a55104b5eb5f2f8459bc79a8a [2020-08-19 02:41:35,211 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:41:35,213 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:41:35,216 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:41:35,216 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:41:35,220 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:41:35,221 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:35,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@742dacf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35, skipping insertion in model container [2020-08-19 02:41:35,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:35,233 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:41:35,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:41:35,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:41:35,631 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:41:35,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:41:35,937 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:41:35,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35 WrapperNode [2020-08-19 02:41:35,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:41:35,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:41:35,939 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:41:35,939 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:41:35,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:35,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:35,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:35,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:36,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:36,020 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:36,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (1/1) ... [2020-08-19 02:41:36,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:41:36,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:41:36,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:41:36,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:41:36,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (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 [2020-08-19 02:41:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:41:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:41:36,128 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:41:36,129 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:41:36,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:41:36,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:41:36,129 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:41:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:41:36,130 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:41:36,131 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:41:36,132 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:41:36,133 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:41:36,134 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:41:36,134 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:41:36,134 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:41:36,135 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:41:36,135 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:41:36,135 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:41:36,135 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:41:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:41:36,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:41:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:41:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:41:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:41:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:41:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:41:36,138 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:41:36,139 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:41:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:41:36,140 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:41:36,141 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:41:36,142 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:41:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-19 02:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:41:36,144 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:41:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:41:36,145 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:41:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:41:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:41:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:41:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:41:36,146 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:41:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:41:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:41:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:41:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:41:36,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:41:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:41:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:41:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:41:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:41:37,280 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:41:37,281 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:41:37,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:41:37 BoogieIcfgContainer [2020-08-19 02:41:37,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:41:37,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:41:37,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:41:37,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:41:37,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:41:35" (1/3) ... [2020-08-19 02:41:37,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4c7b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:41:37, skipping insertion in model container [2020-08-19 02:41:37,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:41:35" (2/3) ... [2020-08-19 02:41:37,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d4c7b0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:41:37, skipping insertion in model container [2020-08-19 02:41:37,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:41:37" (3/3) ... [2020-08-19 02:41:37,294 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product49.cil.c [2020-08-19 02:41:37,304 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:41:37,312 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:41:37,327 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:41:37,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:41:37,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:41:37,352 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:41:37,353 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:41:37,353 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:41:37,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:41:37,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:41:37,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:41:37,376 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-19 02:41:37,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:41:37,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:37,388 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] [2020-08-19 02:41:37,388 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:37,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:37,395 INFO L82 PathProgramCache]: Analyzing trace with hash 464701397, now seen corresponding path program 1 times [2020-08-19 02:41:37,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:37,404 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665314092] [2020-08-19 02:41:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,010 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:38,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:38,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:41:38,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:41:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 02:41:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:38,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:38,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665314092] [2020-08-19 02:41:38,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:38,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:41:38,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064184551] [2020-08-19 02:41:38,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:41:38,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:38,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:41:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:41:38,224 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 4 states. [2020-08-19 02:41:39,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:39,289 INFO L93 Difference]: Finished difference Result 303 states and 389 transitions. [2020-08-19 02:41:39,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:41:39,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-19 02:41:39,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:39,307 INFO L225 Difference]: With dead ends: 303 [2020-08-19 02:41:39,307 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 02:41:39,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:41:39,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 02:41:39,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-19 02:41:39,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 02:41:39,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 02:41:39,400 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 59 [2020-08-19 02:41:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:39,401 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 02:41:39,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:41:39,401 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 02:41:39,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:41:39,405 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:39,406 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] [2020-08-19 02:41:39,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:41:39,406 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:39,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:39,407 INFO L82 PathProgramCache]: Analyzing trace with hash -103265726, now seen corresponding path program 1 times [2020-08-19 02:41:39,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:39,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871902972] [2020-08-19 02:41:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,756 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:39,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:39,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:39,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:41:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:41:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:41:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:39,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871902972] [2020-08-19 02:41:39,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:39,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:41:39,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367660734] [2020-08-19 02:41:39,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:41:39,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:39,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:41:39,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:41:39,814 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 5 states. [2020-08-19 02:41:40,286 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:41,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:41,076 INFO L93 Difference]: Finished difference Result 248 states and 301 transitions. [2020-08-19 02:41:41,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:41:41,077 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-19 02:41:41,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:41,083 INFO L225 Difference]: With dead ends: 248 [2020-08-19 02:41:41,083 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 02:41:41,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:41:41,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 02:41:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 02:41:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 02:41:41,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-19 02:41:41,146 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 60 [2020-08-19 02:41:41,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:41,147 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-19 02:41:41,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:41:41,147 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-19 02:41:41,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 02:41:41,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:41,159 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] [2020-08-19 02:41:41,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:41:41,161 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:41,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:41,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1838047012, now seen corresponding path program 1 times [2020-08-19 02:41:41,162 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:41,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366666265] [2020-08-19 02:41:41,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,572 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:41,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:41,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:41:41,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 02:41:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:41,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366666265] [2020-08-19 02:41:41,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:41,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:41,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705854047] [2020-08-19 02:41:41,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:41,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:41,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:41,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:41,729 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 9 states. [2020-08-19 02:41:42,185 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:42,482 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:42,749 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:42,973 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:44,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:44,097 INFO L93 Difference]: Finished difference Result 257 states and 316 transitions. [2020-08-19 02:41:44,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:41:44,097 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-19 02:41:44,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:44,101 INFO L225 Difference]: With dead ends: 257 [2020-08-19 02:41:44,101 INFO L226 Difference]: Without dead ends: 156 [2020-08-19 02:41:44,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:41:44,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-19 02:41:44,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 129. [2020-08-19 02:41:44,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 02:41:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 149 transitions. [2020-08-19 02:41:44,136 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 149 transitions. Word has length 64 [2020-08-19 02:41:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:44,137 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 149 transitions. [2020-08-19 02:41:44,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 149 transitions. [2020-08-19 02:41:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 02:41:44,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:44,139 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] [2020-08-19 02:41:44,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:41:44,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash -745886990, now seen corresponding path program 1 times [2020-08-19 02:41:44,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:44,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316890923] [2020-08-19 02:41:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:44,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,411 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:44,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:44,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:44,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-19 02:41:44,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-19 02:41:44,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:44,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:44,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316890923] [2020-08-19 02:41:44,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:44,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:41:44,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919357861] [2020-08-19 02:41:44,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:41:44,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:44,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:41:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:41:44,556 INFO L87 Difference]: Start difference. First operand 129 states and 149 transitions. Second operand 7 states. [2020-08-19 02:41:44,969 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:46,304 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:46,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:46,791 INFO L93 Difference]: Finished difference Result 356 states and 444 transitions. [2020-08-19 02:41:46,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:41:46,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 77 [2020-08-19 02:41:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:46,796 INFO L225 Difference]: With dead ends: 356 [2020-08-19 02:41:46,796 INFO L226 Difference]: Without dead ends: 255 [2020-08-19 02:41:46,798 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:41:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-08-19 02:41:46,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 212. [2020-08-19 02:41:46,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-08-19 02:41:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 244 transitions. [2020-08-19 02:41:46,842 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 244 transitions. Word has length 77 [2020-08-19 02:41:46,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:46,843 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 244 transitions. [2020-08-19 02:41:46,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:41:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 244 transitions. [2020-08-19 02:41:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 02:41:46,844 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:46,845 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] [2020-08-19 02:41:46,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:41:46,845 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:46,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:46,846 INFO L82 PathProgramCache]: Analyzing trace with hash -47194942, now seen corresponding path program 1 times [2020-08-19 02:41:46,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:46,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055974121] [2020-08-19 02:41:46,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,159 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:47,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-19 02:41:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-19 02:41:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:41:47,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055974121] [2020-08-19 02:41:47,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:47,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:47,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752645658] [2020-08-19 02:41:47,375 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:47,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:47,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:47,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:47,376 INFO L87 Difference]: Start difference. First operand 212 states and 244 transitions. Second operand 9 states. [2020-08-19 02:41:47,872 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:48,527 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:49,183 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:49,481 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:49,866 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:50,101 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:50,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:50,684 INFO L93 Difference]: Finished difference Result 438 states and 534 transitions. [2020-08-19 02:41:50,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:41:50,684 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-08-19 02:41:50,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:50,687 INFO L225 Difference]: With dead ends: 438 [2020-08-19 02:41:50,688 INFO L226 Difference]: Without dead ends: 254 [2020-08-19 02:41:50,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:41:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-08-19 02:41:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 211. [2020-08-19 02:41:50,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-08-19 02:41:50,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 241 transitions. [2020-08-19 02:41:50,744 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 241 transitions. Word has length 91 [2020-08-19 02:41:50,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:50,744 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 241 transitions. [2020-08-19 02:41:50,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:50,745 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 241 transitions. [2020-08-19 02:41:50,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 02:41:50,746 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:50,746 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, 1] [2020-08-19 02:41:50,746 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:41:50,747 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:50,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:50,747 INFO L82 PathProgramCache]: Analyzing trace with hash -238329201, now seen corresponding path program 1 times [2020-08-19 02:41:50,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:50,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330421081] [2020-08-19 02:41:50,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,019 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:51,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:51,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:51,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:51,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:41:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:41:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:51,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:51,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330421081] [2020-08-19 02:41:51,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:51,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:41:51,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234065451] [2020-08-19 02:41:51,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:41:51,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:51,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:41:51,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:41:51,170 INFO L87 Difference]: Start difference. First operand 211 states and 241 transitions. Second operand 9 states. [2020-08-19 02:41:52,243 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:41:52,506 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:41:52,755 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:52,999 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:53,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:53,694 INFO L93 Difference]: Finished difference Result 436 states and 528 transitions. [2020-08-19 02:41:53,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:41:53,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-08-19 02:41:53,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:53,700 INFO L225 Difference]: With dead ends: 436 [2020-08-19 02:41:53,701 INFO L226 Difference]: Without dead ends: 253 [2020-08-19 02:41:53,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:41:53,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-08-19 02:41:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 216. [2020-08-19 02:41:53,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-19 02:41:53,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 246 transitions. [2020-08-19 02:41:53,766 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 246 transitions. Word has length 92 [2020-08-19 02:41:53,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:53,767 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 246 transitions. [2020-08-19 02:41:53,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:41:53,767 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 246 transitions. [2020-08-19 02:41:53,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 02:41:53,768 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:53,768 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, 1] [2020-08-19 02:41:53,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:41:53,769 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:53,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:53,769 INFO L82 PathProgramCache]: Analyzing trace with hash 463270673, now seen corresponding path program 1 times [2020-08-19 02:41:53,770 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:53,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690713384] [2020-08-19 02:41:53,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,056 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:54,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:54,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:54,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:54,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:41:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:41:54,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:54,215 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:54,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690713384] [2020-08-19 02:41:54,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:54,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:41:54,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82996224] [2020-08-19 02:41:54,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:41:54,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:54,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:41:54,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:41:54,224 INFO L87 Difference]: Start difference. First operand 216 states and 246 transitions. Second operand 11 states. [2020-08-19 02:41:54,796 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:55,024 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:55,244 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:55,904 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:56,152 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:56,392 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:41:57,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:41:57,181 INFO L93 Difference]: Finished difference Result 448 states and 548 transitions. [2020-08-19 02:41:57,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:41:57,185 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 92 [2020-08-19 02:41:57,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:41:57,188 INFO L225 Difference]: With dead ends: 448 [2020-08-19 02:41:57,188 INFO L226 Difference]: Without dead ends: 260 [2020-08-19 02:41:57,190 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:41:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-08-19 02:41:57,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 220. [2020-08-19 02:41:57,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 02:41:57,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 250 transitions. [2020-08-19 02:41:57,274 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 250 transitions. Word has length 92 [2020-08-19 02:41:57,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:41:57,275 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 250 transitions. [2020-08-19 02:41:57,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:41:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 250 transitions. [2020-08-19 02:41:57,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 02:41:57,276 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:41:57,277 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, 1] [2020-08-19 02:41:57,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:41:57,277 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:41:57,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:41:57,277 INFO L82 PathProgramCache]: Analyzing trace with hash -2106215726, now seen corresponding path program 1 times [2020-08-19 02:41:57,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:41:57,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [756059872] [2020-08-19 02:41:57,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:41:57,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,567 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:41:57,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:57,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:41:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:41:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:41:57,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:41:57,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:41:57,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:41:57,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:41:57,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:41:57,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:57,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:41:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:41:57,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:41:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 02:41:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 02:41:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:41:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:41:57,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [756059872] [2020-08-19 02:41:57,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:41:57,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:41:57,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136569369] [2020-08-19 02:41:57,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:41:57,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:41:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:41:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:41:57,760 INFO L87 Difference]: Start difference. First operand 220 states and 250 transitions. Second operand 7 states. [2020-08-19 02:41:58,282 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:41:58,851 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:00,467 INFO L93 Difference]: Finished difference Result 617 states and 772 transitions. [2020-08-19 02:42:00,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 02:42:00,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-08-19 02:42:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:00,471 INFO L225 Difference]: With dead ends: 617 [2020-08-19 02:42:00,471 INFO L226 Difference]: Without dead ends: 425 [2020-08-19 02:42:00,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:42:00,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-08-19 02:42:00,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 387. [2020-08-19 02:42:00,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 387 states. [2020-08-19 02:42:00,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 454 transitions. [2020-08-19 02:42:00,549 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 454 transitions. Word has length 92 [2020-08-19 02:42:00,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:00,550 INFO L479 AbstractCegarLoop]: Abstraction has 387 states and 454 transitions. [2020-08-19 02:42:00,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:42:00,550 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 454 transitions. [2020-08-19 02:42:00,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-19 02:42:00,554 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:00,554 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, 1, 1, 1, 1, 1] [2020-08-19 02:42:00,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:42:00,555 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:00,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:00,555 INFO L82 PathProgramCache]: Analyzing trace with hash -302189332, now seen corresponding path program 1 times [2020-08-19 02:42:00,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:00,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570294912] [2020-08-19 02:42:00,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,902 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:00,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:00,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:00,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:42:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:42:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:01,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 02:42:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:42:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:01,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 02:42:01,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570294912] [2020-08-19 02:42:01,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:42:01,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:42:01,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923156372] [2020-08-19 02:42:01,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:42:01,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:01,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:42:01,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:42:01,084 INFO L87 Difference]: Start difference. First operand 387 states and 454 transitions. Second operand 12 states. [2020-08-19 02:42:01,611 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:02,222 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:03,161 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:03,449 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:03,711 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:03,984 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:04,241 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:05,328 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:05,599 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:06,145 INFO L93 Difference]: Finished difference Result 1065 states and 1331 transitions. [2020-08-19 02:42:06,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 02:42:06,146 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2020-08-19 02:42:06,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:06,151 INFO L225 Difference]: With dead ends: 1065 [2020-08-19 02:42:06,151 INFO L226 Difference]: Without dead ends: 776 [2020-08-19 02:42:06,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-19 02:42:06,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-08-19 02:42:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 666. [2020-08-19 02:42:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2020-08-19 02:42:06,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 774 transitions. [2020-08-19 02:42:06,277 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 774 transitions. Word has length 96 [2020-08-19 02:42:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:06,278 INFO L479 AbstractCegarLoop]: Abstraction has 666 states and 774 transitions. [2020-08-19 02:42:06,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:42:06,279 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 774 transitions. [2020-08-19 02:42:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-19 02:42:06,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:06,281 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:42:06,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:42:06,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:06,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:06,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1029431621, now seen corresponding path program 1 times [2020-08-19 02:42:06,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:06,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545549062] [2020-08-19 02:42:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,615 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:06,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:06,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:06,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:06,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:06,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:06,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:42:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:42:06,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 02:42:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 02:42:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-19 02:42:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:06,950 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:42:06,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545549062] [2020-08-19 02:42:06,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:06,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:42:06,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054696180] [2020-08-19 02:42:06,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:42:06,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:06,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:42:06,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:42:06,954 INFO L87 Difference]: Start difference. First operand 666 states and 774 transitions. Second operand 16 states. [2020-08-19 02:42:08,021 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:08,407 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:08,676 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:08,932 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 02:42:09,569 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:09,854 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:10,628 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:10,957 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:11,755 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:12,008 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:12,270 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:12,565 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:13,121 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:13,473 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:13,829 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:14,448 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:14,736 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:15,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:15,341 INFO L93 Difference]: Finished difference Result 1445 states and 1735 transitions. [2020-08-19 02:42:15,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-08-19 02:42:15,341 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-19 02:42:15,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:15,347 INFO L225 Difference]: With dead ends: 1445 [2020-08-19 02:42:15,347 INFO L226 Difference]: Without dead ends: 873 [2020-08-19 02:42:15,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=568, Invalid=2084, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 02:42:15,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2020-08-19 02:42:15,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 794. [2020-08-19 02:42:15,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 02:42:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 932 transitions. [2020-08-19 02:42:15,494 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 932 transitions. Word has length 157 [2020-08-19 02:42:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:15,495 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 932 transitions. [2020-08-19 02:42:15,495 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:42:15,495 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 932 transitions. [2020-08-19 02:42:15,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-19 02:42:15,501 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:15,501 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, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:42:15,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:42:15,502 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:15,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:15,502 INFO L82 PathProgramCache]: Analyzing trace with hash 321853011, now seen corresponding path program 1 times [2020-08-19 02:42:15,502 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:15,502 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722763112] [2020-08-19 02:42:15,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,770 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:15,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:15,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:15,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:15,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:15,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:15,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:15,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:42:15,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:16,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:16,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:16,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 02:42:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:42:16,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-19 02:42:16,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:16,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 02:42:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:16,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:16,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-19 02:42:16,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-19 02:42:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 78 proven. 29 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-08-19 02:42:16,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722763112] [2020-08-19 02:42:16,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:16,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 02:42:16,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275105213] [2020-08-19 02:42:16,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 02:42:16,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:16,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 02:42:16,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:42:16,341 INFO L87 Difference]: Start difference. First operand 794 states and 932 transitions. Second operand 15 states. [2020-08-19 02:42:17,835 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:18,112 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:18,368 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:18,625 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:19,916 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:20,534 INFO L93 Difference]: Finished difference Result 2078 states and 2545 transitions. [2020-08-19 02:42:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:42:20,534 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-19 02:42:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:20,544 INFO L225 Difference]: With dead ends: 2078 [2020-08-19 02:42:20,544 INFO L226 Difference]: Without dead ends: 1225 [2020-08-19 02:42:20,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 96 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=230, Invalid=762, Unknown=0, NotChecked=0, Total=992 [2020-08-19 02:42:20,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-08-19 02:42:20,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1039. [2020-08-19 02:42:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2020-08-19 02:42:20,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1251 transitions. [2020-08-19 02:42:20,721 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1251 transitions. Word has length 273 [2020-08-19 02:42:20,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:20,722 INFO L479 AbstractCegarLoop]: Abstraction has 1039 states and 1251 transitions. [2020-08-19 02:42:20,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 02:42:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1251 transitions. [2020-08-19 02:42:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-08-19 02:42:20,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:20,728 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, 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, 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] [2020-08-19 02:42:20,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:42:20,729 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:20,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash -955707756, now seen corresponding path program 1 times [2020-08-19 02:42:20,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:20,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466375459] [2020-08-19 02:42:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:20,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,074 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:21,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:21,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:21,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:42:21,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:21,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:21,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:42:21,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 02:42:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:21,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:42:21,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-08-19 02:42:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-19 02:42:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-19 02:42:21,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:21,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-08-19 02:42:21,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 02:42:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 86 proven. 36 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2020-08-19 02:42:21,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466375459] [2020-08-19 02:42:21,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:21,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 02:42:21,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784732796] [2020-08-19 02:42:21,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 02:42:21,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:21,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 02:42:21,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-19 02:42:21,447 INFO L87 Difference]: Start difference. First operand 1039 states and 1251 transitions. Second operand 16 states. [2020-08-19 02:42:21,967 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:22,275 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:22,522 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:22,759 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 02:42:23,382 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:24,093 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:42:24,450 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:24,731 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:25,376 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:26,177 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:26,438 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:26,912 INFO L93 Difference]: Finished difference Result 1968 states and 2405 transitions. [2020-08-19 02:42:26,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 02:42:26,912 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 283 [2020-08-19 02:42:26,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:26,918 INFO L225 Difference]: With dead ends: 1968 [2020-08-19 02:42:26,918 INFO L226 Difference]: Without dead ends: 1042 [2020-08-19 02:42:26,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 02:42:26,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1042 states. [2020-08-19 02:42:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1042 to 999. [2020-08-19 02:42:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-08-19 02:42:27,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1185 transitions. [2020-08-19 02:42:27,128 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1185 transitions. Word has length 283 [2020-08-19 02:42:27,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:27,128 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1185 transitions. [2020-08-19 02:42:27,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 02:42:27,129 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1185 transitions. [2020-08-19 02:42:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-08-19 02:42:27,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:27,137 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, 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, 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] [2020-08-19 02:42:27,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:42:27,137 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:27,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:27,138 INFO L82 PathProgramCache]: Analyzing trace with hash 746778921, now seen corresponding path program 1 times [2020-08-19 02:42:27,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:27,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33537231] [2020-08-19 02:42:27,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:27,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,493 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:42:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:42:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:42:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:42:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 02:42:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:42:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-19 02:42:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:27,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:42:27,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 02:42:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:27,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:42:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 02:42:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-19 02:42:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:42:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 02:42:27,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:42:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:42:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-08-19 02:42:27,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 02:42:27,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:42:27,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 02:42:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:42:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:42:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:42:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2020-08-19 02:42:27,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2020-08-19 02:42:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:42:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2020-08-19 02:42:27,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33537231] [2020-08-19 02:42:27,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:42:27,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:42:27,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405712058] [2020-08-19 02:42:27,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:42:27,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:42:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:42:27,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:42:27,858 INFO L87 Difference]: Start difference. First operand 999 states and 1185 transitions. Second operand 11 states. [2020-08-19 02:42:29,777 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:42:30,037 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:42:30,313 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:30,563 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:42:31,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:42:31,057 INFO L93 Difference]: Finished difference Result 1920 states and 2314 transitions. [2020-08-19 02:42:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 02:42:31,058 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2020-08-19 02:42:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:42:31,067 INFO L225 Difference]: With dead ends: 1920 [2020-08-19 02:42:31,067 INFO L226 Difference]: Without dead ends: 1034 [2020-08-19 02:42:31,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:42:31,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-08-19 02:42:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1009. [2020-08-19 02:42:31,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1009 states. [2020-08-19 02:42:31,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1195 transitions. [2020-08-19 02:42:31,349 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1195 transitions. Word has length 284 [2020-08-19 02:42:31,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:42:31,353 INFO L479 AbstractCegarLoop]: Abstraction has 1009 states and 1195 transitions. [2020-08-19 02:42:31,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:42:31,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1195 transitions. [2020-08-19 02:42:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-08-19 02:42:31,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:42:31,360 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, 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, 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] [2020-08-19 02:42:31,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:42:31,360 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:42:31,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:42:31,360 INFO L82 PathProgramCache]: Analyzing trace with hash -427824693, now seen corresponding path program 1 times [2020-08-19 02:42:31,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:42:31,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981147917] [2020-08-19 02:42:31,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:42:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat