/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:06:44,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:06:44,658 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:06:44,699 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:06:44,699 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:06:44,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:06:44,706 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:06:44,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:06:44,716 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:06:44,717 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:06:44,718 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:06:44,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:06:44,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:06:44,726 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:06:44,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:06:44,730 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:06:44,732 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:06:44,734 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:06:44,736 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:06:44,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:06:44,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:06:44,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:06:44,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:06:44,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:06:44,751 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:06:44,752 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:06:44,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:06:44,755 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:06:44,755 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:06:44,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:06:44,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:06:44,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:06:44,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:06:44,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:06:44,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:06:44,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:06:44,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:06:44,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:06:44,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:06:44,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:06:44,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:06:44,783 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 00:06:44,820 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:06:44,820 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:06:44,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:06:44,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:06:44,823 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:06:44,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:06:44,823 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:06:44,823 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:06:44,823 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:06:44,824 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:06:44,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:06:44,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:06:44,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:06:44,825 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:06:44,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:06:44,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:06:44,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:06:44,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:06:44,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:06:44,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:06:44,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:06:44,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:06:44,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:06:44,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:06:44,827 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:06:44,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:06:44,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:06:44,828 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:06:44,828 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:06:44,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4; [2020-08-19 00:06:45,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:06:45,149 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:06:45,154 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:06:45,155 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:06:45,155 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:06:45,156 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-19 00:06:45,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90f7783d/6dd8b3d9f4d244f1a1f94867d2a4cb90/FLAG8f2805607 [2020-08-19 00:06:45,781 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:06:45,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product61.cil.c [2020-08-19 00:06:45,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90f7783d/6dd8b3d9f4d244f1a1f94867d2a4cb90/FLAG8f2805607 [2020-08-19 00:06:46,068 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f90f7783d/6dd8b3d9f4d244f1a1f94867d2a4cb90 [2020-08-19 00:06:46,077 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:06:46,078 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:06:46,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:46,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:06:46,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:06:46,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,088 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c4453c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46, skipping insertion in model container [2020-08-19 00:06:46,089 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:06:46,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:06:46,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:46,655 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:06:46,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:06:46,784 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:06:46,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46 WrapperNode [2020-08-19 00:06:46,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:06:46,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:06:46,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:06:46,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:06:46,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (1/1) ... [2020-08-19 00:06:46,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:06:46,885 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:06:46,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:06:46,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:06:46,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (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 00:06:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:06:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:06:46,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:06:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:06:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:06:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:06:46,944 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:06:46,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:06:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:06:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:06:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:06:46,946 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:06:46,947 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:06:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:06:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:06:46,948 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:06:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:06:46,949 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:06:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:06:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:06:46,950 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:06:46,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:06:46,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:06:46,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:06:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:06:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:06:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:06:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:06:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:06:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:06:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:06:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:06:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:06:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:06:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:06:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:06:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:06:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:06:46,956 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:06:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:06:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:06:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:06:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:06:46,957 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:06:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:06:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:06:46,958 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:06:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:06:46,959 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:06:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:06:46,960 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:06:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:06:46,961 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 00:06:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:06:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 00:06:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:06:46,962 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:06:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:06:46,963 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:06:46,964 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:06:46,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:06:46,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:06:48,080 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:06:48,080 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:06:48,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:48 BoogieIcfgContainer [2020-08-19 00:06:48,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:06:48,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:06:48,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:06:48,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:06:48,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:06:46" (1/3) ... [2020-08-19 00:06:48,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:48, skipping insertion in model container [2020-08-19 00:06:48,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:06:46" (2/3) ... [2020-08-19 00:06:48,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69ce0341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:06:48, skipping insertion in model container [2020-08-19 00:06:48,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:06:48" (3/3) ... [2020-08-19 00:06:48,095 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product61.cil.c [2020-08-19 00:06:48,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:06:48,114 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:06:48,129 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:06:48,156 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:06:48,156 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:06:48,156 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:06:48,156 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:06:48,157 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:06:48,157 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:06:48,157 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:06:48,157 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:06:48,184 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-08-19 00:06:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 00:06:48,195 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:48,196 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 00:06:48,197 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:48,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:48,203 INFO L82 PathProgramCache]: Analyzing trace with hash 1301923028, now seen corresponding path program 1 times [2020-08-19 00:06:48,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:48,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078444465] [2020-08-19 00:06:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,822 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:06:48,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:06:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:48,948 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 00:06:48,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078444465] [2020-08-19 00:06:48,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:48,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 00:06:48,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329504007] [2020-08-19 00:06:48,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 00:06:48,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:48,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 00:06:48,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 00:06:48,976 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 3 states. [2020-08-19 00:06:50,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:50,234 INFO L93 Difference]: Finished difference Result 345 states and 451 transitions. [2020-08-19 00:06:50,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 00:06:50,236 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 00:06:50,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:50,252 INFO L225 Difference]: With dead ends: 345 [2020-08-19 00:06:50,252 INFO L226 Difference]: Without dead ends: 186 [2020-08-19 00:06:50,258 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 00:06:50,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-19 00:06:50,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 150. [2020-08-19 00:06:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-08-19 00:06:50,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 179 transitions. [2020-08-19 00:06:50,391 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 179 transitions. Word has length 46 [2020-08-19 00:06:50,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:50,392 INFO L479 AbstractCegarLoop]: Abstraction has 150 states and 179 transitions. [2020-08-19 00:06:50,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 00:06:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 179 transitions. [2020-08-19 00:06:50,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 00:06:50,404 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:50,404 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 00:06:50,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:06:50,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:50,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:50,405 INFO L82 PathProgramCache]: Analyzing trace with hash -216566915, now seen corresponding path program 1 times [2020-08-19 00:06:50,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:50,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604665657] [2020-08-19 00:06:50,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:50,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,804 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 00:06:50,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:06:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:50,870 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 00:06:50,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604665657] [2020-08-19 00:06:50,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:50,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:06:50,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252821945] [2020-08-19 00:06:50,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:06:50,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:50,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:06:50,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:06:50,876 INFO L87 Difference]: Start difference. First operand 150 states and 179 transitions. Second operand 4 states. [2020-08-19 00:06:51,343 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:52,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:52,379 INFO L93 Difference]: Finished difference Result 278 states and 342 transitions. [2020-08-19 00:06:52,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 00:06:52,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 00:06:52,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:52,384 INFO L225 Difference]: With dead ends: 278 [2020-08-19 00:06:52,385 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 00:06:52,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:06:52,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 00:06:52,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-19 00:06:52,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-19 00:06:52,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2020-08-19 00:06:52,433 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 47 [2020-08-19 00:06:52,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:52,433 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2020-08-19 00:06:52,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:06:52,434 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2020-08-19 00:06:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:06:52,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:52,435 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 00:06:52,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:06:52,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1163721234, now seen corresponding path program 1 times [2020-08-19 00:06:52,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:52,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595082800] [2020-08-19 00:06:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,733 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:52,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:06:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:06:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:52,838 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 00:06:52,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595082800] [2020-08-19 00:06:52,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:52,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:52,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684625055] [2020-08-19 00:06:52,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:52,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:52,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:52,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:52,840 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 8 states. [2020-08-19 00:06:53,291 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:53,584 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:53,811 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:54,052 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:06:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:55,440 INFO L93 Difference]: Finished difference Result 287 states and 356 transitions. [2020-08-19 00:06:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 00:06:55,446 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 00:06:55,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:55,449 INFO L225 Difference]: With dead ends: 287 [2020-08-19 00:06:55,450 INFO L226 Difference]: Without dead ends: 170 [2020-08-19 00:06:55,451 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 00:06:55,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-08-19 00:06:55,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 141. [2020-08-19 00:06:55,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-08-19 00:06:55,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 166 transitions. [2020-08-19 00:06:55,489 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 166 transitions. Word has length 51 [2020-08-19 00:06:55,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:55,490 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 166 transitions. [2020-08-19 00:06:55,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:06:55,490 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 166 transitions. [2020-08-19 00:06:55,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 00:06:55,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:55,492 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] [2020-08-19 00:06:55,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:06:55,493 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:55,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:55,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1315506319, now seen corresponding path program 1 times [2020-08-19 00:06:55,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:55,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373530406] [2020-08-19 00:06:55,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,767 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:55,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:55,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:06:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:55,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:55,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 00:06:55,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 00:06:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:55,892 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 00:06:55,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373530406] [2020-08-19 00:06:55,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:55,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 00:06:55,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467554054] [2020-08-19 00:06:55,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 00:06:55,894 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:55,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 00:06:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 00:06:55,895 INFO L87 Difference]: Start difference. First operand 141 states and 166 transitions. Second operand 6 states. [2020-08-19 00:06:56,314 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:06:57,451 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:06:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:06:58,250 INFO L93 Difference]: Finished difference Result 390 states and 484 transitions. [2020-08-19 00:06:58,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:06:58,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-19 00:06:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:06:58,254 INFO L225 Difference]: With dead ends: 390 [2020-08-19 00:06:58,255 INFO L226 Difference]: Without dead ends: 273 [2020-08-19 00:06:58,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:06:58,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-19 00:06:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 232. [2020-08-19 00:06:58,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 00:06:58,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 264 transitions. [2020-08-19 00:06:58,310 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 264 transitions. Word has length 69 [2020-08-19 00:06:58,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:06:58,310 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 264 transitions. [2020-08-19 00:06:58,310 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 00:06:58,310 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 264 transitions. [2020-08-19 00:06:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 00:06:58,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:06:58,312 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, 1, 1, 1, 1, 1] [2020-08-19 00:06:58,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:06:58,312 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:06:58,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:06:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash -921409892, now seen corresponding path program 1 times [2020-08-19 00:06:58,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:06:58,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885115953] [2020-08-19 00:06:58,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:06:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,571 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:06:58,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:06:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:06:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:06:58,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:06:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:06:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:06:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:58,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:58,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:06:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:06:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:06:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 00:06:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 00:06:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:06:58,724 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 00:06:58,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885115953] [2020-08-19 00:06:58,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:06:58,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:06:58,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605106364] [2020-08-19 00:06:58,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:06:58,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:06:58,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:06:58,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:06:58,730 INFO L87 Difference]: Start difference. First operand 232 states and 264 transitions. Second operand 8 states. [2020-08-19 00:06:59,404 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:00,383 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:00,728 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:01,375 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:01,603 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:01,864 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:03,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:03,033 INFO L93 Difference]: Finished difference Result 691 states and 842 transitions. [2020-08-19 00:07:03,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:07:03,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 83 [2020-08-19 00:07:03,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:03,041 INFO L225 Difference]: With dead ends: 691 [2020-08-19 00:07:03,041 INFO L226 Difference]: Without dead ends: 483 [2020-08-19 00:07:03,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 00:07:03,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2020-08-19 00:07:03,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 419. [2020-08-19 00:07:03,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-19 00:07:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 478 transitions. [2020-08-19 00:07:03,144 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 478 transitions. Word has length 83 [2020-08-19 00:07:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:03,144 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 478 transitions. [2020-08-19 00:07:03,145 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:07:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 478 transitions. [2020-08-19 00:07:03,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 00:07:03,146 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:03,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:03,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:07:03,147 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:03,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash 592685792, now seen corresponding path program 1 times [2020-08-19 00:07:03,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:03,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371679060] [2020-08-19 00:07:03,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,435 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:03,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:03,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:07:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:07:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:03,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 00:07:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:07:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:03,596 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 00:07:03,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371679060] [2020-08-19 00:07:03,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:03,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:07:03,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693905318] [2020-08-19 00:07:03,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:07:03,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:03,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:07:03,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:07:03,599 INFO L87 Difference]: Start difference. First operand 419 states and 478 transitions. Second operand 9 states. [2020-08-19 00:07:04,034 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:05,229 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:05,511 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:06,606 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:06,860 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:07,088 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:07,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:07,441 INFO L93 Difference]: Finished difference Result 522 states and 646 transitions. [2020-08-19 00:07:07,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 00:07:07,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-08-19 00:07:07,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:07,446 INFO L225 Difference]: With dead ends: 522 [2020-08-19 00:07:07,447 INFO L226 Difference]: Without dead ends: 519 [2020-08-19 00:07:07,448 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:07:07,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-08-19 00:07:07,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 419. [2020-08-19 00:07:07,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-08-19 00:07:07,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 477 transitions. [2020-08-19 00:07:07,530 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 477 transitions. Word has length 87 [2020-08-19 00:07:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:07,531 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 477 transitions. [2020-08-19 00:07:07,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:07:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 477 transitions. [2020-08-19 00:07:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:07:07,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:07,533 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:07,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:07:07,533 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -88143431, now seen corresponding path program 1 times [2020-08-19 00:07:07,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:07,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129165270] [2020-08-19 00:07:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,778 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:07,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:07,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:07,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:07:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:07:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:07:07,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:07,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 00:07:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:08,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:07:08,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129165270] [2020-08-19 00:07:08,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:08,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:07:08,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270529838] [2020-08-19 00:07:08,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:07:08,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:08,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:07:08,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:07:08,028 INFO L87 Difference]: Start difference. First operand 419 states and 477 transitions. Second operand 9 states. [2020-08-19 00:07:09,005 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:09,242 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:09,506 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:09,757 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:11,003 INFO L93 Difference]: Finished difference Result 922 states and 1136 transitions. [2020-08-19 00:07:11,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 00:07:11,006 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 103 [2020-08-19 00:07:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:11,010 INFO L225 Difference]: With dead ends: 922 [2020-08-19 00:07:11,010 INFO L226 Difference]: Without dead ends: 527 [2020-08-19 00:07:11,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:07:11,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2020-08-19 00:07:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 429. [2020-08-19 00:07:11,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-08-19 00:07:11,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 487 transitions. [2020-08-19 00:07:11,120 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 487 transitions. Word has length 103 [2020-08-19 00:07:11,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:11,120 INFO L479 AbstractCegarLoop]: Abstraction has 429 states and 487 transitions. [2020-08-19 00:07:11,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:07:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 487 transitions. [2020-08-19 00:07:11,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:07:11,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:11,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:11,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:07:11,123 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:11,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:11,123 INFO L82 PathProgramCache]: Analyzing trace with hash -441231813, now seen corresponding path program 1 times [2020-08-19 00:07:11,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:11,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836991717] [2020-08-19 00:07:11,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,399 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:11,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:11,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:07:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:07:11,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:07:11,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 00:07:11,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:11,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:07:11,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836991717] [2020-08-19 00:07:11,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:11,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 00:07:11,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406413242] [2020-08-19 00:07:11,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 00:07:11,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:11,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 00:07:11,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 00:07:11,587 INFO L87 Difference]: Start difference. First operand 429 states and 487 transitions. Second operand 11 states. [2020-08-19 00:07:12,506 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:12,764 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:13,011 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:13,629 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:13,908 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:14,170 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:07:15,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:15,623 INFO L93 Difference]: Finished difference Result 942 states and 1158 transitions. [2020-08-19 00:07:15,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 00:07:15,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 103 [2020-08-19 00:07:15,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:15,628 INFO L225 Difference]: With dead ends: 942 [2020-08-19 00:07:15,628 INFO L226 Difference]: Without dead ends: 537 [2020-08-19 00:07:15,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:07:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2020-08-19 00:07:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 437. [2020-08-19 00:07:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 00:07:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 495 transitions. [2020-08-19 00:07:15,710 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 495 transitions. Word has length 103 [2020-08-19 00:07:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:15,710 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 495 transitions. [2020-08-19 00:07:15,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 00:07:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 495 transitions. [2020-08-19 00:07:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 00:07:15,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:15,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:15,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:07:15,716 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:15,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:15,716 INFO L82 PathProgramCache]: Analyzing trace with hash 691958780, now seen corresponding path program 1 times [2020-08-19 00:07:15,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:15,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614077821] [2020-08-19 00:07:15,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,039 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:16,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:16,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:16,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 00:07:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 00:07:16,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:16,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:16,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:16,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:16,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:07:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-19 00:07:16,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 00:07:16,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614077821] [2020-08-19 00:07:16,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:07:16,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:07:16,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494095454] [2020-08-19 00:07:16,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:07:16,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:07:16,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:07:16,266 INFO L87 Difference]: Start difference. First operand 437 states and 495 transitions. Second operand 7 states. [2020-08-19 00:07:16,885 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:17,469 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:19,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:19,727 INFO L93 Difference]: Finished difference Result 1265 states and 1606 transitions. [2020-08-19 00:07:19,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 00:07:19,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 103 [2020-08-19 00:07:19,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:19,734 INFO L225 Difference]: With dead ends: 1265 [2020-08-19 00:07:19,734 INFO L226 Difference]: Without dead ends: 852 [2020-08-19 00:07:19,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:07:19,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-19 00:07:19,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 753. [2020-08-19 00:07:19,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-08-19 00:07:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 889 transitions. [2020-08-19 00:07:19,876 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 889 transitions. Word has length 103 [2020-08-19 00:07:19,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:19,877 INFO L479 AbstractCegarLoop]: Abstraction has 753 states and 889 transitions. [2020-08-19 00:07:19,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:07:19,877 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 889 transitions. [2020-08-19 00:07:19,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-08-19 00:07:19,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:19,880 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:19,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:07:19,881 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:19,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:19,881 INFO L82 PathProgramCache]: Analyzing trace with hash -867723262, now seen corresponding path program 1 times [2020-08-19 00:07:19,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:19,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128369823] [2020-08-19 00:07:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,184 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:20,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:07:20,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:07:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:07:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:20,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:20,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:20,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 00:07:20,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 00:07:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 00:07:20,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128369823] [2020-08-19 00:07:20,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:07:20,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 00:07:20,705 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321133867] [2020-08-19 00:07:20,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 00:07:20,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:20,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 00:07:20,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-19 00:07:20,706 INFO L87 Difference]: Start difference. First operand 753 states and 889 transitions. Second operand 17 states. [2020-08-19 00:07:21,487 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:21,830 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:07:22,094 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:22,333 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:22,926 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:24,008 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:24,359 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:24,642 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:24,944 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:25,271 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:25,552 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:26,136 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 00:07:26,740 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-19 00:07:29,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:29,207 INFO L93 Difference]: Finished difference Result 1548 states and 1897 transitions. [2020-08-19 00:07:29,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:07:29,208 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 107 [2020-08-19 00:07:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:29,214 INFO L225 Difference]: With dead ends: 1548 [2020-08-19 00:07:29,214 INFO L226 Difference]: Without dead ends: 819 [2020-08-19 00:07:29,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=304, Invalid=1256, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 00:07:29,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2020-08-19 00:07:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 723. [2020-08-19 00:07:29,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 723 states. [2020-08-19 00:07:29,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 840 transitions. [2020-08-19 00:07:29,345 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 840 transitions. Word has length 107 [2020-08-19 00:07:29,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:29,345 INFO L479 AbstractCegarLoop]: Abstraction has 723 states and 840 transitions. [2020-08-19 00:07:29,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 00:07:29,345 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 840 transitions. [2020-08-19 00:07:29,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-19 00:07:29,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:07:29,349 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:07:29,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:07:29,350 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:07:29,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:07:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1713415852, now seen corresponding path program 1 times [2020-08-19 00:07:29,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:07:29,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374313795] [2020-08-19 00:07:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:07:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,667 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 00:07:29,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:07:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:07:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:07:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:07:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 00:07:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:07:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:07:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:07:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 00:07:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 00:07:29,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 00:07:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 00:07:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:07:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:07:29,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:07:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:07:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-19 00:07:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-08-19 00:07:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:07:30,034 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 00:07:30,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374313795] [2020-08-19 00:07:30,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:07:30,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 00:07:30,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247422499] [2020-08-19 00:07:30,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 00:07:30,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:07:30,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 00:07:30,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:07:30,037 INFO L87 Difference]: Start difference. First operand 723 states and 840 transitions. Second operand 18 states. [2020-08-19 00:07:30,617 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:30,951 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:07:31,215 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:31,488 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:07:32,099 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 00:07:33,098 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:33,423 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:33,718 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:34,013 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:34,360 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:34,654 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:35,841 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:36,105 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:36,393 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:36,656 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 00:07:37,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:07:37,723 INFO L93 Difference]: Finished difference Result 1309 states and 1611 transitions. [2020-08-19 00:07:37,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-19 00:07:37,724 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 176 [2020-08-19 00:07:37,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:07:37,725 INFO L225 Difference]: With dead ends: 1309 [2020-08-19 00:07:37,725 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:07:37,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=347, Invalid=1633, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 00:07:37,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:07:37,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:07:37,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:07:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:07:37,731 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 176 [2020-08-19 00:07:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:07:37,732 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:07:37,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 00:07:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:07:37,732 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:07:37,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:07:37,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:07:38,484 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 00:07:38,779 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-19 00:07:38,895 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 00:07:39,026 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 198 [2020-08-19 00:07:40,514 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 294 DAG size of output: 240 [2020-08-19 00:07:42,328 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 294 DAG size of output: 240