/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:43:20,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:43:20,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:43:20,749 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:43:20,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:43:20,759 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:43:20,761 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:43:20,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:43:20,766 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:43:20,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:43:20,770 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:43:20,773 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:43:20,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:43:20,776 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:43:20,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:43:20,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:43:20,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:43:20,784 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:43:20,786 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:43:20,792 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:43:20,795 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:43:20,796 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:43:20,797 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:43:20,798 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:43:20,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:43:20,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:43:20,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:43:20,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:43:20,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:43:20,815 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:43:20,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:43:20,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:43:20,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:43:20,818 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:43:20,819 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:43:20,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:43:20,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:43:20,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:43:20,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:43:20,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:43:20,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:43:20,824 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 [2020-08-21 23:43:20,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:43:20,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:43:20,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:43:20,868 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:43:20,868 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:43:20,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:43:20,868 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:43:20,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:43:20,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:43:20,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:43:20,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:43:20,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:43:20,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:43:20,871 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:43:20,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:43:20,871 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:43:20,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:43:20,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:43:20,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:43:20,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:43:20,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:43:20,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:43:20,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:43:20,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:43:20,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:43:20,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:43:20,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:43:20,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:43:20,874 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:43:20,874 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-08-21 23:43:21,166 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:43:21,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:43:21,183 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:43:21,185 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:43:21,185 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:43:21,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-21 23:43:21,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794f4200f/6572d8ba9c534c668d119790cf871f1b/FLAG901cb16fe [2020-08-21 23:43:21,825 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:43:21,826 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product62.cil.c [2020-08-21 23:43:21,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794f4200f/6572d8ba9c534c668d119790cf871f1b/FLAG901cb16fe [2020-08-21 23:43:22,156 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/794f4200f/6572d8ba9c534c668d119790cf871f1b [2020-08-21 23:43:22,165 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:43:22,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:43:22,168 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:43:22,168 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:43:22,172 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:43:22,173 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,176 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20abf48c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22, skipping insertion in model container [2020-08-21 23:43:22,176 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:43:22,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:43:22,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:43:22,635 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:43:22,716 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:43:22,754 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:43:22,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22 WrapperNode [2020-08-21 23:43:22,754 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:43:22,755 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:43:22,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:43:22,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:43:22,770 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (1/1) ... [2020-08-21 23:43:22,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:43:22,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:43:22,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:43:22,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:43:22,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (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 [2020-08-21 23:43:22,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 23:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 23:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 23:43:22,916 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 23:43:22,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:43:22,918 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 23:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 23:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 23:43:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 23:43:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 23:43:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 23:43:22,922 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 23:43:22,923 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 23:43:22,923 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 23:43:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:43:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:43:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 23:43:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 23:43:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 23:43:22,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 23:43:22,926 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 23:43:22,927 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 23:43:22,928 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:43:22,929 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 23:43:22,930 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 23:43:22,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:43:22,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 23:43:22,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:43:24,000 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:43:24,000 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 23:43:24,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:43:24 BoogieIcfgContainer [2020-08-21 23:43:24,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:43:24,013 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:43:24,013 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:43:24,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:43:24,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:43:22" (1/3) ... [2020-08-21 23:43:24,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe609f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:43:24, skipping insertion in model container [2020-08-21 23:43:24,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:43:22" (2/3) ... [2020-08-21 23:43:24,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe609f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:43:24, skipping insertion in model container [2020-08-21 23:43:24,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:43:24" (3/3) ... [2020-08-21 23:43:24,022 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product62.cil.c [2020-08-21 23:43:24,033 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:43:24,044 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:43:24,056 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:43:24,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:43:24,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:43:24,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:43:24,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:43:24,080 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:43:24,080 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:43:24,080 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:43:24,080 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:43:24,107 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states. [2020-08-21 23:43:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 23:43:24,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:24,119 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:24,119 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:24,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:24,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1456889578, now seen corresponding path program 1 times [2020-08-21 23:43:24,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:24,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683982874] [2020-08-21 23:43:24,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,832 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:24,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:24,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:24,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:43:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 23:43:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:43:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:24,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683982874] [2020-08-21 23:43:24,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:24,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 23:43:24,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890255919] [2020-08-21 23:43:24,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 23:43:24,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:24,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 23:43:24,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:43:24,985 INFO L87 Difference]: Start difference. First operand 210 states. Second operand 4 states. [2020-08-21 23:43:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:26,338 INFO L93 Difference]: Finished difference Result 367 states and 468 transitions. [2020-08-21 23:43:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 23:43:26,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 23:43:26,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:26,359 INFO L225 Difference]: With dead ends: 367 [2020-08-21 23:43:26,359 INFO L226 Difference]: Without dead ends: 201 [2020-08-21 23:43:26,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 23:43:26,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-21 23:43:26,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 167. [2020-08-21 23:43:26,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-21 23:43:26,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 197 transitions. [2020-08-21 23:43:26,472 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 197 transitions. Word has length 59 [2020-08-21 23:43:26,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:26,473 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 197 transitions. [2020-08-21 23:43:26,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 23:43:26,473 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 197 transitions. [2020-08-21 23:43:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 23:43:26,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:26,478 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:26,478 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:43:26,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:26,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:26,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1129690590, now seen corresponding path program 1 times [2020-08-21 23:43:26,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:26,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116221404] [2020-08-21 23:43:26,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:26,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,810 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:26,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:26,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:26,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 23:43:26,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 23:43:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 23:43:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:26,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116221404] [2020-08-21 23:43:26,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:26,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:43:26,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699496331] [2020-08-21 23:43:26,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:43:26,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:26,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:43:26,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:43:26,875 INFO L87 Difference]: Start difference. First operand 167 states and 197 transitions. Second operand 5 states. [2020-08-21 23:43:27,338 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:28,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:28,466 INFO L93 Difference]: Finished difference Result 308 states and 376 transitions. [2020-08-21 23:43:28,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 23:43:28,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 23:43:28,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:28,470 INFO L225 Difference]: With dead ends: 308 [2020-08-21 23:43:28,470 INFO L226 Difference]: Without dead ends: 191 [2020-08-21 23:43:28,472 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:43:28,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-21 23:43:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-21 23:43:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 23:43:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 185 transitions. [2020-08-21 23:43:28,519 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 185 transitions. Word has length 60 [2020-08-21 23:43:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:28,520 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 185 transitions. [2020-08-21 23:43:28,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:43:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 185 transitions. [2020-08-21 23:43:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-21 23:43:28,522 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:28,523 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] [2020-08-21 23:43:28,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:43:28,523 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash -651026134, now seen corresponding path program 1 times [2020-08-21 23:43:28,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:28,524 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758340224] [2020-08-21 23:43:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:28,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:28,903 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:28,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:28,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:28,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:28,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:28,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:28,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:29,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 23:43:29,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:43:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:29,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:29,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758340224] [2020-08-21 23:43:29,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:29,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:43:29,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374815577] [2020-08-21 23:43:29,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:43:29,062 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:29,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:43:29,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:43:29,062 INFO L87 Difference]: Start difference. First operand 158 states and 185 transitions. Second operand 9 states. [2020-08-21 23:43:29,393 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:29,724 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:30,001 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:30,239 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:31,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:31,678 INFO L93 Difference]: Finished difference Result 321 states and 395 transitions. [2020-08-21 23:43:31,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 23:43:31,683 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-21 23:43:31,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:31,686 INFO L225 Difference]: With dead ends: 321 [2020-08-21 23:43:31,687 INFO L226 Difference]: Without dead ends: 191 [2020-08-21 23:43:31,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:43:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-21 23:43:31,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 158. [2020-08-21 23:43:31,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-21 23:43:31,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2020-08-21 23:43:31,728 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 65 [2020-08-21 23:43:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:31,728 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2020-08-21 23:43:31,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:43:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2020-08-21 23:43:31,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-21 23:43:31,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:31,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:31,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:43:31,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:31,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:31,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1717523051, now seen corresponding path program 1 times [2020-08-21 23:43:31,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:31,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [779980894] [2020-08-21 23:43:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:31,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,017 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:32,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:32,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:32,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:32,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:32,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:32,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-08-21 23:43:32,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-21 23:43:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:32,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:32,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [779980894] [2020-08-21 23:43:32,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:32,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:43:32,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62938019] [2020-08-21 23:43:32,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:43:32,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:32,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:43:32,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:43:32,132 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 7 states. [2020-08-21 23:43:32,492 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:34,059 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:34,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:34,741 INFO L93 Difference]: Finished difference Result 439 states and 543 transitions. [2020-08-21 23:43:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:43:34,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-08-21 23:43:34,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:34,746 INFO L225 Difference]: With dead ends: 439 [2020-08-21 23:43:34,747 INFO L226 Difference]: Without dead ends: 309 [2020-08-21 23:43:34,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:43:34,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-21 23:43:34,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 263. [2020-08-21 23:43:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-08-21 23:43:34,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 298 transitions. [2020-08-21 23:43:34,829 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 298 transitions. Word has length 83 [2020-08-21 23:43:34,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:34,829 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 298 transitions. [2020-08-21 23:43:34,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:43:34,830 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 298 transitions. [2020-08-21 23:43:34,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 23:43:34,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:34,831 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] [2020-08-21 23:43:34,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 23:43:34,832 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:34,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:34,832 INFO L82 PathProgramCache]: Analyzing trace with hash 119397721, now seen corresponding path program 1 times [2020-08-21 23:43:34,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:34,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341834603] [2020-08-21 23:43:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,150 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:35,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:35,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 23:43:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 23:43:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:35,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 23:43:35,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341834603] [2020-08-21 23:43:35,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:35,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:43:35,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413624660] [2020-08-21 23:43:35,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:43:35,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:35,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:43:35,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:43:35,309 INFO L87 Difference]: Start difference. First operand 263 states and 298 transitions. Second operand 9 states. [2020-08-21 23:43:35,648 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:36,328 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:37,242 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:37,498 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:37,928 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:38,157 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:38,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:38,770 INFO L93 Difference]: Finished difference Result 543 states and 648 transitions. [2020-08-21 23:43:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 23:43:38,771 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 23:43:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:38,775 INFO L225 Difference]: With dead ends: 543 [2020-08-21 23:43:38,775 INFO L226 Difference]: Without dead ends: 308 [2020-08-21 23:43:38,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:43:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-21 23:43:38,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 262. [2020-08-21 23:43:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-08-21 23:43:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 295 transitions. [2020-08-21 23:43:38,829 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 295 transitions. Word has length 97 [2020-08-21 23:43:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:38,829 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 295 transitions. [2020-08-21 23:43:38,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:43:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 295 transitions. [2020-08-21 23:43:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 23:43:38,831 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:38,831 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, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:38,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 23:43:38,832 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash 299468705, now seen corresponding path program 1 times [2020-08-21 23:43:38,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:38,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585435660] [2020-08-21 23:43:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,120 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:39,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:39,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:39,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:39,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:39,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:39,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 23:43:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:43:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:39,308 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:39,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585435660] [2020-08-21 23:43:39,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:39,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 23:43:39,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687528549] [2020-08-21 23:43:39,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 23:43:39,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 23:43:39,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 23:43:39,313 INFO L87 Difference]: Start difference. First operand 262 states and 295 transitions. Second operand 9 states. [2020-08-21 23:43:40,254 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:40,481 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:43:40,718 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:40,947 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:41,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:41,826 INFO L93 Difference]: Finished difference Result 543 states and 653 transitions. [2020-08-21 23:43:41,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 23:43:41,826 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 113 [2020-08-21 23:43:41,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:41,829 INFO L225 Difference]: With dead ends: 543 [2020-08-21 23:43:41,829 INFO L226 Difference]: Without dead ends: 309 [2020-08-21 23:43:41,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 23:43:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-08-21 23:43:41,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 267. [2020-08-21 23:43:41,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-21 23:43:41,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 300 transitions. [2020-08-21 23:43:41,883 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 300 transitions. Word has length 113 [2020-08-21 23:43:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:41,883 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 300 transitions. [2020-08-21 23:43:41,884 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 23:43:41,884 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 300 transitions. [2020-08-21 23:43:41,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 23:43:41,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:41,885 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, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:41,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 23:43:41,886 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:41,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:41,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2056336545, now seen corresponding path program 1 times [2020-08-21 23:43:41,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:41,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400410423] [2020-08-21 23:43:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:41,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,138 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:42,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:42,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:42,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:42,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:42,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:42,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:42,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:42,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 23:43:42,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:43:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:42,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:42,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400410423] [2020-08-21 23:43:42,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:42,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 23:43:42,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053168319] [2020-08-21 23:43:42,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 23:43:42,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:42,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 23:43:42,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 23:43:42,303 INFO L87 Difference]: Start difference. First operand 267 states and 300 transitions. Second operand 11 states. [2020-08-21 23:43:42,797 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:43,058 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:43,281 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:43,987 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:44,228 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:44,460 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:45,555 INFO L93 Difference]: Finished difference Result 553 states and 664 transitions. [2020-08-21 23:43:45,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 23:43:45,556 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 113 [2020-08-21 23:43:45,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:45,559 INFO L225 Difference]: With dead ends: 553 [2020-08-21 23:43:45,559 INFO L226 Difference]: Without dead ends: 314 [2020-08-21 23:43:45,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 23:43:45,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-21 23:43:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 271. [2020-08-21 23:43:45,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-08-21 23:43:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 304 transitions. [2020-08-21 23:43:45,609 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 304 transitions. Word has length 113 [2020-08-21 23:43:45,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:45,610 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 304 transitions. [2020-08-21 23:43:45,610 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 23:43:45,610 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 304 transitions. [2020-08-21 23:43:45,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-21 23:43:45,611 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:45,611 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, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:45,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 23:43:45,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:45,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:45,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1287166530, now seen corresponding path program 1 times [2020-08-21 23:43:45,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:45,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105916979] [2020-08-21 23:43:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,946 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:45,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:45,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:46,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 23:43:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-21 23:43:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:46,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:46,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-21 23:43:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 23:43:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:46,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105916979] [2020-08-21 23:43:46,175 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:46,175 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 23:43:46,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508419889] [2020-08-21 23:43:46,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 23:43:46,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:46,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 23:43:46,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 23:43:46,178 INFO L87 Difference]: Start difference. First operand 271 states and 304 transitions. Second operand 7 states. [2020-08-21 23:43:46,629 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:47,172 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:49,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:49,340 INFO L93 Difference]: Finished difference Result 745 states and 915 transitions. [2020-08-21 23:43:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 23:43:49,341 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 113 [2020-08-21 23:43:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:49,345 INFO L225 Difference]: With dead ends: 745 [2020-08-21 23:43:49,345 INFO L226 Difference]: Without dead ends: 502 [2020-08-21 23:43:49,347 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 23:43:49,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-21 23:43:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 460. [2020-08-21 23:43:49,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-08-21 23:43:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 532 transitions. [2020-08-21 23:43:49,426 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 532 transitions. Word has length 113 [2020-08-21 23:43:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:49,426 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 532 transitions. [2020-08-21 23:43:49,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 23:43:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 532 transitions. [2020-08-21 23:43:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-08-21 23:43:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:49,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:43:49,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 23:43:49,429 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:49,430 INFO L82 PathProgramCache]: Analyzing trace with hash -803017404, now seen corresponding path program 1 times [2020-08-21 23:43:49,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:49,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [80462284] [2020-08-21 23:43:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,775 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:49,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:49,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:43:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 23:43:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 23:43:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:49,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:50,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:50,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:50,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-21 23:43:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 23:43:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:50,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 23:43:50,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [80462284] [2020-08-21 23:43:50,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:43:50,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 23:43:50,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819784877] [2020-08-21 23:43:50,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 23:43:50,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:50,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 23:43:50,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 23:43:50,074 INFO L87 Difference]: Start difference. First operand 460 states and 532 transitions. Second operand 12 states. [2020-08-21 23:43:50,470 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:51,134 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:52,241 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:52,535 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:52,799 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:43:53,082 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:53,390 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:43:54,757 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:43:55,028 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:43:56,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:43:56,035 INFO L93 Difference]: Finished difference Result 1281 states and 1569 transitions. [2020-08-21 23:43:56,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 23:43:56,036 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 117 [2020-08-21 23:43:56,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:43:56,043 INFO L225 Difference]: With dead ends: 1281 [2020-08-21 23:43:56,044 INFO L226 Difference]: Without dead ends: 928 [2020-08-21 23:43:56,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 23:43:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2020-08-21 23:43:56,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 803. [2020-08-21 23:43:56,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2020-08-21 23:43:56,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 919 transitions. [2020-08-21 23:43:56,171 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 919 transitions. Word has length 117 [2020-08-21 23:43:56,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:43:56,172 INFO L479 AbstractCegarLoop]: Abstraction has 803 states and 919 transitions. [2020-08-21 23:43:56,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 23:43:56,172 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 919 transitions. [2020-08-21 23:43:56,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-08-21 23:43:56,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:43:56,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 23:43:56,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 23:43:56,176 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:43:56,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:43:56,177 INFO L82 PathProgramCache]: Analyzing trace with hash -394036424, now seen corresponding path program 1 times [2020-08-21 23:43:56,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:43:56,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884988349] [2020-08-21 23:43:56,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:43:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,491 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:43:56,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:56,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:43:56,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:43:56,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:43:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:43:56,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:43:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:43:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:43:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:43:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:43:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 23:43:56,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 23:43:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:43:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 23:43:56,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-21 23:43:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:43:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:43:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:43:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:43:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-08-21 23:43:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-08-21 23:43:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:43:56,902 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 22 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-08-21 23:43:56,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884988349] [2020-08-21 23:43:56,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:43:56,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:43:56,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222052998] [2020-08-21 23:43:56,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:43:56,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:43:56,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:43:56,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:43:56,905 INFO L87 Difference]: Start difference. First operand 803 states and 919 transitions. Second operand 16 states. [2020-08-21 23:43:57,416 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 23:43:57,788 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:43:58,067 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:43:58,330 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 23:43:59,015 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-21 23:43:59,285 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 23:43:59,683 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-21 23:44:00,532 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-21 23:44:01,076 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:44:01,548 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 23:44:02,177 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-21 23:44:02,657 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 23:44:02,953 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:03,492 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:44:03,925 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 23:44:04,558 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 23:44:05,121 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-21 23:44:05,861 WARN L193 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 23:44:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:44:06,420 INFO L93 Difference]: Finished difference Result 1744 states and 2052 transitions. [2020-08-21 23:44:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-08-21 23:44:06,421 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 195 [2020-08-21 23:44:06,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:44:06,428 INFO L225 Difference]: With dead ends: 1744 [2020-08-21 23:44:06,428 INFO L226 Difference]: Without dead ends: 1044 [2020-08-21 23:44:06,431 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=618, Invalid=2462, Unknown=0, NotChecked=0, Total=3080 [2020-08-21 23:44:06,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-08-21 23:44:06,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 951. [2020-08-21 23:44:06,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 951 states. [2020-08-21 23:44:06,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1097 transitions. [2020-08-21 23:44:06,604 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1097 transitions. Word has length 195 [2020-08-21 23:44:06,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:44:06,604 INFO L479 AbstractCegarLoop]: Abstraction has 951 states and 1097 transitions. [2020-08-21 23:44:06,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:44:06,605 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1097 transitions. [2020-08-21 23:44:06,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-08-21 23:44:06,612 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:44:06,612 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 23:44:06,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 23:44:06,613 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:44:06,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:44:06,613 INFO L82 PathProgramCache]: Analyzing trace with hash -604725475, now seen corresponding path program 1 times [2020-08-21 23:44:06,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:44:06,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532189850] [2020-08-21 23:44:06,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:44:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,959 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:44:06,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:44:06,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:44:06,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:06,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:44:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:44:07,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:44:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:44:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:44:07,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:07,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 23:44:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 23:44:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:07,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:44:07,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:44:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:44:07,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:44:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-21 23:44:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:44:07,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:44:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:44:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-21 23:44:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2020-08-21 23:44:07,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:07,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:44:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:07,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-08-21 23:44:07,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-08-21 23:44:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 77 proven. 21 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-08-21 23:44:07,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532189850] [2020-08-21 23:44:07,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:44:07,609 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 23:44:07,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615373965] [2020-08-21 23:44:07,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 23:44:07,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:44:07,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 23:44:07,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-08-21 23:44:07,613 INFO L87 Difference]: Start difference. First operand 951 states and 1097 transitions. Second operand 16 states. [2020-08-21 23:44:08,365 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:44:09,238 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 23:44:10,336 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:44:10,628 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:44:10,882 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 23:44:11,147 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:11,451 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:11,710 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:13,453 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-21 23:44:13,908 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 191 [2020-08-21 23:44:14,422 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 23:44:14,924 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 192 [2020-08-21 23:44:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:44:15,922 INFO L93 Difference]: Finished difference Result 2689 states and 3184 transitions. [2020-08-21 23:44:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-21 23:44:15,923 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2020-08-21 23:44:15,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:44:15,935 INFO L225 Difference]: With dead ends: 2689 [2020-08-21 23:44:15,935 INFO L226 Difference]: Without dead ends: 1774 [2020-08-21 23:44:15,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=376, Invalid=1346, Unknown=0, NotChecked=0, Total=1722 [2020-08-21 23:44:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1774 states. [2020-08-21 23:44:16,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1774 to 1728. [2020-08-21 23:44:16,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1728 states. [2020-08-21 23:44:16,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1728 states to 1728 states and 1964 transitions. [2020-08-21 23:44:16,337 INFO L78 Accepts]: Start accepts. Automaton has 1728 states and 1964 transitions. Word has length 331 [2020-08-21 23:44:16,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:44:16,340 INFO L479 AbstractCegarLoop]: Abstraction has 1728 states and 1964 transitions. [2020-08-21 23:44:16,340 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 23:44:16,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1728 states and 1964 transitions. [2020-08-21 23:44:16,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-08-21 23:44:16,351 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:44:16,352 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 23:44:16,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 23:44:16,352 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:44:16,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:44:16,353 INFO L82 PathProgramCache]: Analyzing trace with hash 414679617, now seen corresponding path program 1 times [2020-08-21 23:44:16,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:44:16,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910931937] [2020-08-21 23:44:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:44:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,736 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 23:44:16,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 23:44:16,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:16,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 23:44:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 23:44:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 23:44:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 23:44:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 23:44:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:44:16,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-21 23:44:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-08-21 23:44:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:44:16,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:44:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 23:44:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 23:44:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-08-21 23:44:16,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-08-21 23:44:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 23:44:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 23:44:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 23:44:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 23:44:16,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-21 23:44:16,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:44:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-21 23:44:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 23:44:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:16,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:16,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 23:44:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:17,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 23:44:17,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 23:44:17,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 320 [2020-08-21 23:44:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-21 23:44:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:44:17,169 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 92 proven. 3 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-08-21 23:44:17,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910931937] [2020-08-21 23:44:17,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 23:44:17,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-21 23:44:17,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896108580] [2020-08-21 23:44:17,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-21 23:44:17,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:44:17,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-21 23:44:17,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-21 23:44:17,172 INFO L87 Difference]: Start difference. First operand 1728 states and 1964 transitions. Second operand 19 states. [2020-08-21 23:44:17,884 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 23:44:18,350 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:18,627 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:18,859 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 23:44:19,526 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189