/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:04:19,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:04:19,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:04:19,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:04:19,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:04:19,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:04:19,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:04:19,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:04:19,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:04:19,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:04:19,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:04:19,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:04:19,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:04:19,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:04:19,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:04:19,855 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:04:19,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:04:19,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:04:19,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:04:19,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:04:19,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:04:19,868 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:04:19,869 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:04:19,870 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:04:19,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:04:19,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:04:19,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:04:19,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:04:19,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:04:19,882 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:04:19,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:04:19,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:04:19,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:04:19,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:04:19,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:04:19,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:04:19,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:04:19,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:04:19,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:04:19,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:04:19,896 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:04:19,897 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 05:04:19,919 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:04:19,919 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:04:19,920 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:04:19,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:04:19,920 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:04:19,921 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:04:19,921 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:04:19,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:04:19,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:04:19,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:04:19,922 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:04:19,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:04:19,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:04:19,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:04:19,923 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:04:19,923 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:04:19,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:19,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:04:19,924 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:04:19,924 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:04:19,924 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:04:19,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:04:19,925 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:04:19,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:04:19,925 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=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:04:20,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:04:20,240 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:04:20,243 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:04:20,245 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:04:20,245 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:04:20,246 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-19 05:04:20,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698310c16/45238889be7b47d4a29326d108fcb234/FLAG604cf2b8a [2020-08-19 05:04:20,848 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:04:20,849 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product49.cil.c [2020-08-19 05:04:20,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698310c16/45238889be7b47d4a29326d108fcb234/FLAG604cf2b8a [2020-08-19 05:04:21,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/698310c16/45238889be7b47d4a29326d108fcb234 [2020-08-19 05:04:21,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:04:21,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:04:21,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:21,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:04:21,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:04:21,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f4d4318 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21, skipping insertion in model container [2020-08-19 05:04:21,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:04:21,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:04:21,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:21,696 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:04:21,782 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:21,822 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:04:21,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21 WrapperNode [2020-08-19 05:04:21,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:21,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:04:21,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:04:21,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:04:21,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (1/1) ... [2020-08-19 05:04:21,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:04:21,921 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:04:21,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:04:21,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:04:21,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (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 05:04:21,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:04:21,981 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:04:21,982 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:04:21,983 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:04:21,984 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:04:21,985 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:21,986 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:04:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:04:21,987 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:04:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:04:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:04:21,987 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:04:21,988 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:04:21,989 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:04:21,990 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:04:21,991 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:04:21,992 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:04:21,993 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:21,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:04:21,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:04:23,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:04:23,090 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:04:23,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:23 BoogieIcfgContainer [2020-08-19 05:04:23,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:04:23,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:04:23,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:04:23,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:04:23,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:04:21" (1/3) ... [2020-08-19 05:04:23,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5739d01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:23, skipping insertion in model container [2020-08-19 05:04:23,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:21" (2/3) ... [2020-08-19 05:04:23,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5739d01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:23, skipping insertion in model container [2020-08-19 05:04:23,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:23" (3/3) ... [2020-08-19 05:04:23,110 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product49.cil.c [2020-08-19 05:04:23,121 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:04:23,130 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:04:23,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:04:23,163 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:04:23,164 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:04:23,164 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:04:23,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:04:23,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:04:23,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:04:23,164 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:04:23,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:04:23,185 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-08-19 05:04:23,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:04:23,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:23,197 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:23,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:23,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:23,204 INFO L82 PathProgramCache]: Analyzing trace with hash 916136138, now seen corresponding path program 1 times [2020-08-19 05:04:23,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:23,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674911487] [2020-08-19 05:04:23,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:23,890 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:23,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:23,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:23,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:23,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:23,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:04:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:24,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674911487] [2020-08-19 05:04:24,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:24,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:04:24,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355482001] [2020-08-19 05:04:24,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:04:24,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:24,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:04:24,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:24,060 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 3 states. [2020-08-19 05:04:25,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:25,148 INFO L93 Difference]: Finished difference Result 297 states and 388 transitions. [2020-08-19 05:04:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:04:25,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 05:04:25,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:25,165 INFO L225 Difference]: With dead ends: 297 [2020-08-19 05:04:25,165 INFO L226 Difference]: Without dead ends: 160 [2020-08-19 05:04:25,170 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:25,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-08-19 05:04:25,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 128. [2020-08-19 05:04:25,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-08-19 05:04:25,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2020-08-19 05:04:25,254 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 46 [2020-08-19 05:04:25,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:25,255 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2020-08-19 05:04:25,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:04:25,255 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2020-08-19 05:04:25,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 05:04:25,259 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:25,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:25,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:04:25,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:25,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:25,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1104947330, now seen corresponding path program 1 times [2020-08-19 05:04:25,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:25,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014710308] [2020-08-19 05:04:25,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,640 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:04:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:25,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014710308] [2020-08-19 05:04:25,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:25,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:04:25,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864768619] [2020-08-19 05:04:25,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:04:25,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:25,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:04:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:04:25,685 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand 4 states. [2020-08-19 05:04:26,118 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:26,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:26,967 INFO L93 Difference]: Finished difference Result 230 states and 279 transitions. [2020-08-19 05:04:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:04:26,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 05:04:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:26,971 INFO L225 Difference]: With dead ends: 230 [2020-08-19 05:04:26,971 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 05:04:26,973 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:04:26,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 05:04:27,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 05:04:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 05:04:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2020-08-19 05:04:27,013 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 47 [2020-08-19 05:04:27,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:27,014 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2020-08-19 05:04:27,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:04:27,014 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2020-08-19 05:04:27,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:04:27,016 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:27,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:27,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:04:27,017 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:27,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:27,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1852359913, now seen corresponding path program 1 times [2020-08-19 05:04:27,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:27,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944843280] [2020-08-19 05:04:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,298 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:27,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:04:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:27,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944843280] [2020-08-19 05:04:27,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:27,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:04:27,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097042400] [2020-08-19 05:04:27,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:04:27,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:27,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:04:27,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:04:27,401 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand 8 states. [2020-08-19 05:04:27,742 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:28,031 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:28,283 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:28,525 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:29,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:29,571 INFO L93 Difference]: Finished difference Result 239 states and 293 transitions. [2020-08-19 05:04:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:04:29,574 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 05:04:29,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:29,577 INFO L225 Difference]: With dead ends: 239 [2020-08-19 05:04:29,578 INFO L226 Difference]: Without dead ends: 144 [2020-08-19 05:04:29,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:29,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-19 05:04:29,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 119. [2020-08-19 05:04:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-08-19 05:04:29,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 137 transitions. [2020-08-19 05:04:29,610 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 137 transitions. Word has length 51 [2020-08-19 05:04:29,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:29,611 INFO L479 AbstractCegarLoop]: Abstraction has 119 states and 137 transitions. [2020-08-19 05:04:29,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:04:29,611 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 137 transitions. [2020-08-19 05:04:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-19 05:04:29,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:29,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:29,614 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:04:29,614 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:29,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:29,615 INFO L82 PathProgramCache]: Analyzing trace with hash 458129541, now seen corresponding path program 1 times [2020-08-19 05:04:29,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:29,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16111356] [2020-08-19 05:04:29,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,880 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:04:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 05:04:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-19 05:04:29,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:29,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16111356] [2020-08-19 05:04:29,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:29,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:04:29,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214662538] [2020-08-19 05:04:29,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:04:29,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:29,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:04:29,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:04:29,979 INFO L87 Difference]: Start difference. First operand 119 states and 137 transitions. Second operand 6 states. [2020-08-19 05:04:30,359 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:31,484 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:32,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:32,103 INFO L93 Difference]: Finished difference Result 331 states and 409 transitions. [2020-08-19 05:04:32,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:32,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-19 05:04:32,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:32,108 INFO L225 Difference]: With dead ends: 331 [2020-08-19 05:04:32,109 INFO L226 Difference]: Without dead ends: 236 [2020-08-19 05:04:32,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:32,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-08-19 05:04:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 195. [2020-08-19 05:04:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-08-19 05:04:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 222 transitions. [2020-08-19 05:04:32,155 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 222 transitions. Word has length 64 [2020-08-19 05:04:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:32,155 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 222 transitions. [2020-08-19 05:04:32,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:04:32,156 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 222 transitions. [2020-08-19 05:04:32,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 05:04:32,158 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:32,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:04:32,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:04:32,158 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:32,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1170867649, now seen corresponding path program 1 times [2020-08-19 05:04:32,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:32,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554456102] [2020-08-19 05:04:32,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,483 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:32,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:32,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:32,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:04:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:32,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:32,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 05:04:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 05:04:32,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:32,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554456102] [2020-08-19 05:04:32,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:32,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:04:32,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15083973] [2020-08-19 05:04:32,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:32,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:32,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:32,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:32,660 INFO L87 Difference]: Start difference. First operand 195 states and 222 transitions. Second operand 12 states. [2020-08-19 05:04:33,084 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:33,422 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:33,660 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:33,887 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:34,376 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:35,209 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:35,486 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:35,720 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:35,963 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:36,275 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:36,538 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:37,817 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:38,189 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:38,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:38,768 INFO L93 Difference]: Finished difference Result 677 states and 879 transitions. [2020-08-19 05:04:38,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:04:38,769 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-19 05:04:38,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:38,774 INFO L225 Difference]: With dead ends: 677 [2020-08-19 05:04:38,774 INFO L226 Difference]: Without dead ends: 506 [2020-08-19 05:04:38,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 05:04:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-19 05:04:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 448. [2020-08-19 05:04:38,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-08-19 05:04:38,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 529 transitions. [2020-08-19 05:04:38,868 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 529 transitions. Word has length 78 [2020-08-19 05:04:38,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:38,868 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 529 transitions. [2020-08-19 05:04:38,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:38,869 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 529 transitions. [2020-08-19 05:04:38,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:04:38,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:38,874 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 05:04:38,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:04:38,874 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:38,875 INFO L82 PathProgramCache]: Analyzing trace with hash 524664374, now seen corresponding path program 1 times [2020-08-19 05:04:38,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:38,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053344072] [2020-08-19 05:04:38,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,227 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:39,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:39,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:39,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 05:04:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 05:04:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:04:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:04:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 05:04:39,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,509 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 05:04:39,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053344072] [2020-08-19 05:04:39,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:39,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:04:39,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530212397] [2020-08-19 05:04:39,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:04:39,512 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:39,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:04:39,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:04:39,513 INFO L87 Difference]: Start difference. First operand 448 states and 529 transitions. Second operand 13 states. [2020-08-19 05:04:40,022 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:40,647 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:41,134 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:41,398 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:04:41,719 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:41,982 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:42,228 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:42,500 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:04:42,820 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:43,104 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:44,779 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:45,015 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:45,277 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:45,529 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:46,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:46,032 INFO L93 Difference]: Finished difference Result 904 states and 1154 transitions. [2020-08-19 05:04:46,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 05:04:46,033 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 136 [2020-08-19 05:04:46,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:46,038 INFO L225 Difference]: With dead ends: 904 [2020-08-19 05:04:46,038 INFO L226 Difference]: Without dead ends: 480 [2020-08-19 05:04:46,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=215, Invalid=907, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 05:04:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2020-08-19 05:04:46,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 418. [2020-08-19 05:04:46,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-19 05:04:46,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 497 transitions. [2020-08-19 05:04:46,117 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 497 transitions. Word has length 136 [2020-08-19 05:04:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:46,118 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 497 transitions. [2020-08-19 05:04:46,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:04:46,118 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 497 transitions. [2020-08-19 05:04:46,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 05:04:46,120 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:46,121 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 05:04:46,121 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:04:46,121 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:46,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:46,122 INFO L82 PathProgramCache]: Analyzing trace with hash -532032326, now seen corresponding path program 1 times [2020-08-19 05:04:46,122 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:46,122 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [950966995] [2020-08-19 05:04:46,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,444 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:46,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:46,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:46,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:46,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:46,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:46,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:04:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 05:04:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:46,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 05:04:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:04:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 05:04:46,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [950966995] [2020-08-19 05:04:46,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:46,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:04:46,732 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376502464] [2020-08-19 05:04:46,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:46,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:46,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:46,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:46,735 INFO L87 Difference]: Start difference. First operand 418 states and 497 transitions. Second operand 12 states. [2020-08-19 05:04:47,395 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:47,646 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:47,903 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:48,465 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:48,706 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:48,923 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:49,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:49,773 INFO L93 Difference]: Finished difference Result 761 states and 937 transitions. [2020-08-19 05:04:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:04:49,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 05:04:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:49,778 INFO L225 Difference]: With dead ends: 761 [2020-08-19 05:04:49,778 INFO L226 Difference]: Without dead ends: 367 [2020-08-19 05:04:49,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:04:49,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-08-19 05:04:49,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 343. [2020-08-19 05:04:49,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-08-19 05:04:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 405 transitions. [2020-08-19 05:04:49,844 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 405 transitions. Word has length 128 [2020-08-19 05:04:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:49,845 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 405 transitions. [2020-08-19 05:04:49,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 405 transitions. [2020-08-19 05:04:49,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 05:04:49,847 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:49,847 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 05:04:49,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:04:49,848 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:49,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:49,848 INFO L82 PathProgramCache]: Analyzing trace with hash 759278389, now seen corresponding path program 1 times [2020-08-19 05:04:49,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:49,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982467811] [2020-08-19 05:04:49,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:49,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,105 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:50,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:50,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:50,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:04:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:04:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:50,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 05:04:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:04:50,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:50,271 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 05:04:50,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982467811] [2020-08-19 05:04:50,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:50,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:50,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127620073] [2020-08-19 05:04:50,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:50,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:50,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:50,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:50,274 INFO L87 Difference]: Start difference. First operand 343 states and 405 transitions. Second operand 10 states. [2020-08-19 05:04:51,652 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:51,900 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:04:52,162 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:52,409 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:52,738 INFO L93 Difference]: Finished difference Result 632 states and 772 transitions. [2020-08-19 05:04:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:52,738 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 05:04:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:52,742 INFO L225 Difference]: With dead ends: 632 [2020-08-19 05:04:52,742 INFO L226 Difference]: Without dead ends: 372 [2020-08-19 05:04:52,744 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:04:52,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-08-19 05:04:52,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 348. [2020-08-19 05:04:52,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-19 05:04:52,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2020-08-19 05:04:52,823 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 132 [2020-08-19 05:04:52,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:52,823 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2020-08-19 05:04:52,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:52,824 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2020-08-19 05:04:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 05:04:52,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:52,829 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 05:04:52,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:04:52,829 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:52,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:52,830 INFO L82 PathProgramCache]: Analyzing trace with hash 249805299, now seen corresponding path program 1 times [2020-08-19 05:04:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:52,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854627417] [2020-08-19 05:04:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:52,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,248 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:53,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:53,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:53,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:04:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:04:53,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:53,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 05:04:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:04:53,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:53,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 05:04:53,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854627417] [2020-08-19 05:04:53,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:53,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:53,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404768853] [2020-08-19 05:04:53,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:53,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:53,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:53,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:53,431 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand 10 states. [2020-08-19 05:04:53,836 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:55,240 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:55,493 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:55,727 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:55,956 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:56,214 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:56,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:56,477 INFO L93 Difference]: Finished difference Result 379 states and 458 transitions. [2020-08-19 05:04:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:04:56,483 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 05:04:56,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:56,486 INFO L225 Difference]: With dead ends: 379 [2020-08-19 05:04:56,486 INFO L226 Difference]: Without dead ends: 376 [2020-08-19 05:04:56,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:04:56,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-08-19 05:04:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 348. [2020-08-19 05:04:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 348 states. [2020-08-19 05:04:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 409 transitions. [2020-08-19 05:04:56,549 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 409 transitions. Word has length 132 [2020-08-19 05:04:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:56,550 INFO L479 AbstractCegarLoop]: Abstraction has 348 states and 409 transitions. [2020-08-19 05:04:56,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 409 transitions. [2020-08-19 05:04:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:04:56,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:56,552 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 05:04:56,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:04:56,552 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1295460868, now seen corresponding path program 1 times [2020-08-19 05:04:56,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:56,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1039322485] [2020-08-19 05:04:56,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,963 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:56,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:56,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:57,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:57,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:57,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:04:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:04:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:04:57,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 05:04:57,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:57,185 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 05:04:57,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1039322485] [2020-08-19 05:04:57,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:57,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:04:57,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320061238] [2020-08-19 05:04:57,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:57,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:57,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:57,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:57,188 INFO L87 Difference]: Start difference. First operand 348 states and 409 transitions. Second operand 12 states. [2020-08-19 05:04:57,915 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:58,606 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:59,326 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:59,590 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:59,845 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:00,076 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:00,332 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:00,566 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:01,591 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:02,360 INFO L93 Difference]: Finished difference Result 832 states and 1064 transitions. [2020-08-19 05:05:02,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 05:05:02,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-19 05:05:02,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:02,365 INFO L225 Difference]: With dead ends: 832 [2020-08-19 05:05:02,365 INFO L226 Difference]: Without dead ends: 567 [2020-08-19 05:05:02,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 05:05:02,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2020-08-19 05:05:02,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 483. [2020-08-19 05:05:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-08-19 05:05:02,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 575 transitions. [2020-08-19 05:05:02,446 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 575 transitions. Word has length 136 [2020-08-19 05:05:02,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:02,446 INFO L479 AbstractCegarLoop]: Abstraction has 483 states and 575 transitions. [2020-08-19 05:05:02,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:05:02,447 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 575 transitions. [2020-08-19 05:05:02,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 05:05:02,449 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:02,450 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 05:05:02,450 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:05:02,450 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:02,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:02,451 INFO L82 PathProgramCache]: Analyzing trace with hash -1491934830, now seen corresponding path program 2 times [2020-08-19 05:05:02,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:02,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427049049] [2020-08-19 05:05:02,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,743 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:02,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:05:02,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:03,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 05:05:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 05:05:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:03,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 05:05:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 05:05:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:03,087 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 46 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 05:05:03,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427049049] [2020-08-19 05:05:03,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:03,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:05:03,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072501522] [2020-08-19 05:05:03,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:05:03,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:03,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:05:03,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:05:03,091 INFO L87 Difference]: Start difference. First operand 483 states and 575 transitions. Second operand 13 states. [2020-08-19 05:05:04,460 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:04,702 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:06,273 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 05:05:06,529 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:06,757 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:07,180 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-19 05:05:08,579 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-19 05:05:08,839 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-19 05:05:09,126 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:05:09,371 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:05:10,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:10,221 INFO L93 Difference]: Finished difference Result 1322 states and 1661 transitions. [2020-08-19 05:05:10,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 05:05:10,222 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-19 05:05:10,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:10,227 INFO L225 Difference]: With dead ends: 1322 [2020-08-19 05:05:10,227 INFO L226 Difference]: Without dead ends: 920 [2020-08-19 05:05:10,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 74 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 05:05:10,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2020-08-19 05:05:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 789. [2020-08-19 05:05:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 789 states. [2020-08-19 05:05:10,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 789 states to 789 states and 924 transitions. [2020-08-19 05:05:10,372 INFO L78 Accepts]: Start accepts. Automaton has 789 states and 924 transitions. Word has length 189 [2020-08-19 05:05:10,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:10,372 INFO L479 AbstractCegarLoop]: Abstraction has 789 states and 924 transitions. [2020-08-19 05:05:10,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:05:10,373 INFO L276 IsEmpty]: Start isEmpty. Operand 789 states and 924 transitions. [2020-08-19 05:05:10,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-08-19 05:05:10,376 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:10,376 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:10,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:05:10,377 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:10,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:10,377 INFO L82 PathProgramCache]: Analyzing trace with hash 384547988, now seen corresponding path program 1 times [2020-08-19 05:05:10,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:10,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859663266] [2020-08-19 05:05:10,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,635 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:10,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:10,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:10,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:10,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:05:10,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:10,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-19 05:05:10,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 05:05:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-08-19 05:05:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-19 05:05:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:10,898 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-08-19 05:05:10,898 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859663266] [2020-08-19 05:05:10,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:10,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:05:10,899 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14249285] [2020-08-19 05:05:10,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:05:10,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:10,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:05:10,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:05:10,901 INFO L87 Difference]: Start difference. First operand 789 states and 924 transitions. Second operand 13 states. [2020-08-19 05:05:11,637 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:11,876 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:12,104 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:13,330 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:13,590 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:13,849 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:14,076 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:14,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:14,361 INFO L93 Difference]: Finished difference Result 1041 states and 1226 transitions. [2020-08-19 05:05:14,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:05:14,362 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 189 [2020-08-19 05:05:14,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:14,362 INFO L225 Difference]: With dead ends: 1041 [2020-08-19 05:05:14,363 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 05:05:14,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:05:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 05:05:14,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 05:05:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 05:05:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 05:05:14,366 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 189 [2020-08-19 05:05:14,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:14,367 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 05:05:14,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:05:14,367 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 05:05:14,367 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 05:05:14,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:05:14,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 05:05:15,604 WARN L193 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 269 DAG size of output: 246 [2020-08-19 05:05:16,480 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 274 DAG size of output: 248 [2020-08-19 05:05:18,469 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 270 DAG size of output: 253