/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:38:41,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:38:41,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:38:41,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:38:41,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:38:41,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:38:41,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:38:41,779 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:38:41,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:38:41,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:38:41,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:38:41,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:38:41,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:38:41,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:38:41,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:38:41,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:38:41,794 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:38:41,795 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:38:41,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:38:41,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:38:41,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:38:41,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:38:41,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:38:41,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:38:41,822 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:38:41,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:38:41,823 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:38:41,823 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:38:41,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:38:41,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:38:41,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:38:41,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:38:41,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:38:41,835 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:38:41,836 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:38:41,836 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:38:41,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:38:41,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:38:41,839 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:38:41,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:38:41,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:38:41,843 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:38:41,882 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:38:41,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:38:41,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:38:41,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:38:41,885 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:38:41,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:38:41,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:38:41,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:38:41,886 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:38:41,886 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:38:41,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:38:41,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:38:41,888 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:38:41,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:38:41,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:38:41,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:38:41,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:38:41,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:38:41,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:38:41,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:38:41,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:38:41,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:38:41,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:38:41,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:38:41,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:38:42,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:38:42,212 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:38:42,216 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:38:42,217 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:38:42,218 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:38:42,218 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-19 02:38:42,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95d1d33e/7203abf8f64d483d8500bd8fc879e2a4/FLAGd7eccb875 [2020-08-19 02:38:42,823 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:38:42,823 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product47.cil.c [2020-08-19 02:38:42,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95d1d33e/7203abf8f64d483d8500bd8fc879e2a4/FLAGd7eccb875 [2020-08-19 02:38:43,105 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e95d1d33e/7203abf8f64d483d8500bd8fc879e2a4 [2020-08-19 02:38:43,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:38:43,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:38:43,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:38:43,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:38:43,123 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:38:43,124 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@538d8bff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43, skipping insertion in model container [2020-08-19 02:38:43,127 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:38:43,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:38:43,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:38:43,619 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:38:43,699 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:38:43,747 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:38:43,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43 WrapperNode [2020-08-19 02:38:43,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:38:43,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:38:43,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:38:43,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:38:43,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,825 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... [2020-08-19 02:38:43,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:38:43,838 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:38:43,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:38:43,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:38:43,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:38:43,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:38:43,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:38:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:38:43,908 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:38:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:38:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:38:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:38:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:38:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:38:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:38:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:38:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:38:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:38:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:38:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:38:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:38:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:38:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:38:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:38:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:38:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:38:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:38:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:38:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:38:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:38:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:38:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:38:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:38:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:38:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:38:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:38:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:38:43,918 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:38:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:38:43,919 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:38:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:38:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:38:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:38:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:38:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:38:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:38:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:38:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:38:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:38:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:38:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:38:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-19 02:38:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:38:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:38:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:38:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:38:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:38:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:38:45,002 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:38:45,003 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:38:45,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:38:45 BoogieIcfgContainer [2020-08-19 02:38:45,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:38:45,010 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:38:45,010 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:38:45,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:38:45,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:38:43" (1/3) ... [2020-08-19 02:38:45,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319814ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:38:45, skipping insertion in model container [2020-08-19 02:38:45,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:38:43" (2/3) ... [2020-08-19 02:38:45,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319814ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:38:45, skipping insertion in model container [2020-08-19 02:38:45,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:38:45" (3/3) ... [2020-08-19 02:38:45,017 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product47.cil.c [2020-08-19 02:38:45,028 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:38:45,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:38:45,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:38:45,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:38:45,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:38:45,078 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:38:45,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:38:45,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:38:45,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:38:45,078 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:38:45,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:38:45,102 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states. [2020-08-19 02:38:45,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:38:45,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:38:45,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:38:45,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:38:45,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:38:45,120 INFO L82 PathProgramCache]: Analyzing trace with hash -2007114508, now seen corresponding path program 1 times [2020-08-19 02:38:45,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:38:45,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973889014] [2020-08-19 02:38:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:38:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,774 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:38:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:38:45,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:38:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:38:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:38:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:38:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:38:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:38:45,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:45,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:38:45,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973889014] [2020-08-19 02:38:45,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:38:45,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:38:45,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27222760] [2020-08-19 02:38:45,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:38:45,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:38:45,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:38:45,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:38:45,906 INFO L87 Difference]: Start difference. First operand 182 states. Second operand 3 states. [2020-08-19 02:38:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:38:47,084 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-19 02:38:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:38:47,086 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:38:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:38:47,101 INFO L225 Difference]: With dead ends: 323 [2020-08-19 02:38:47,101 INFO L226 Difference]: Without dead ends: 175 [2020-08-19 02:38:47,106 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:38:47,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-19 02:38:47,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 139. [2020-08-19 02:38:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-08-19 02:38:47,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2020-08-19 02:38:47,226 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 46 [2020-08-19 02:38:47,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:38:47,230 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2020-08-19 02:38:47,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:38:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2020-08-19 02:38:47,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:38:47,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:38:47,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:38:47,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:38:47,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:38:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:38:47,238 INFO L82 PathProgramCache]: Analyzing trace with hash 622418136, now seen corresponding path program 1 times [2020-08-19 02:38:47,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:38:47,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807592535] [2020-08-19 02:38:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:38:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,586 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:38:47,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:38:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:38:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:38:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:38:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:38:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:38:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:38:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:38:47,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807592535] [2020-08-19 02:38:47,630 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:38:47,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:38:47,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136751103] [2020-08-19 02:38:47,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:38:47,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:38:47,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:38:47,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:38:47,633 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 4 states. [2020-08-19 02:38:48,111 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:38:49,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:38:49,027 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-19 02:38:49,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:38:49,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:38:49,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:38:49,032 INFO L225 Difference]: With dead ends: 250 [2020-08-19 02:38:49,032 INFO L226 Difference]: Without dead ends: 159 [2020-08-19 02:38:49,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:38:49,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-08-19 02:38:49,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 130. [2020-08-19 02:38:49,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-08-19 02:38:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2020-08-19 02:38:49,078 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 47 [2020-08-19 02:38:49,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:38:49,079 INFO L479 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2020-08-19 02:38:49,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:38:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2020-08-19 02:38:49,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:38:49,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:38:49,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:38:49,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:38:49,082 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:38:49,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:38:49,082 INFO L82 PathProgramCache]: Analyzing trace with hash -943300313, now seen corresponding path program 1 times [2020-08-19 02:38:49,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:38:49,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029277867] [2020-08-19 02:38:49,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:38:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,422 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:38:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:38:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:38:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:38:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:38:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:38:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:38:49,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:38:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:49,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:38:49,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029277867] [2020-08-19 02:38:49,612 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:38:49,612 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:38:49,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464714567] [2020-08-19 02:38:49,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:38:49,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:38:49,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:38:49,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:38:49,619 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 8 states. [2020-08-19 02:38:50,013 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:38:50,328 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:50,562 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:50,813 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:51,519 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:38:53,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:38:53,406 INFO L93 Difference]: Finished difference Result 446 states and 552 transitions. [2020-08-19 02:38:53,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:38:53,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:38:53,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:38:53,412 INFO L225 Difference]: With dead ends: 446 [2020-08-19 02:38:53,413 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 02:38:53,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:38:53,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 02:38:53,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 278. [2020-08-19 02:38:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-08-19 02:38:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 336 transitions. [2020-08-19 02:38:53,513 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 336 transitions. Word has length 51 [2020-08-19 02:38:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:38:53,514 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 336 transitions. [2020-08-19 02:38:53,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:38:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 336 transitions. [2020-08-19 02:38:53,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:38:53,517 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:38:53,517 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:38:53,517 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:38:53,518 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:38:53,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:38:53,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1373874698, now seen corresponding path program 1 times [2020-08-19 02:38:53,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:38:53,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485939125] [2020-08-19 02:38:53,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:38:53,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,890 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:38:53,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:38:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:38:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:38:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:38:53,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:38:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:38:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:38:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:54,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:38:54,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:38:54,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:38:54,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485939125] [2020-08-19 02:38:54,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:38:54,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:38:54,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019502263] [2020-08-19 02:38:54,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:38:54,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:38:54,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:38:54,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:38:54,020 INFO L87 Difference]: Start difference. First operand 278 states and 336 transitions. Second operand 12 states. [2020-08-19 02:38:54,430 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:38:54,769 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:55,025 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:55,272 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:55,859 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:38:56,679 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:38:57,068 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:38:57,412 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:38:57,707 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:38:57,948 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:38:58,386 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:38:58,748 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:38:58,998 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:00,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:00,880 INFO L93 Difference]: Finished difference Result 1133 states and 1552 transitions. [2020-08-19 02:39:00,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:39:00,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 02:39:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:00,890 INFO L225 Difference]: With dead ends: 1133 [2020-08-19 02:39:00,891 INFO L226 Difference]: Without dead ends: 879 [2020-08-19 02:39:00,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:39:00,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-08-19 02:39:01,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 782. [2020-08-19 02:39:01,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2020-08-19 02:39:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 994 transitions. [2020-08-19 02:39:01,074 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 994 transitions. Word has length 57 [2020-08-19 02:39:01,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:01,075 INFO L479 AbstractCegarLoop]: Abstraction has 782 states and 994 transitions. [2020-08-19 02:39:01,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:01,075 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 994 transitions. [2020-08-19 02:39:01,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:39:01,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:01,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:01,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:39:01,080 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:01,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:01,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1561170436, now seen corresponding path program 1 times [2020-08-19 02:39:01,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:01,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441626328] [2020-08-19 02:39:01,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:01,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,387 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:01,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:39:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:39:01,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:39:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:39:01,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441626328] [2020-08-19 02:39:01,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:01,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:39:01,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107516043] [2020-08-19 02:39:01,454 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:39:01,454 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:01,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:39:01,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:39:01,455 INFO L87 Difference]: Start difference. First operand 782 states and 994 transitions. Second operand 6 states. [2020-08-19 02:39:01,752 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:03,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:03,572 INFO L93 Difference]: Finished difference Result 1911 states and 2577 transitions. [2020-08-19 02:39:03,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:03,573 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 02:39:03,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:03,582 INFO L225 Difference]: With dead ends: 1911 [2020-08-19 02:39:03,583 INFO L226 Difference]: Without dead ends: 1153 [2020-08-19 02:39:03,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:03,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2020-08-19 02:39:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 1066. [2020-08-19 02:39:03,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-08-19 02:39:03,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1328 transitions. [2020-08-19 02:39:03,829 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1328 transitions. Word has length 61 [2020-08-19 02:39:03,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:03,830 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1328 transitions. [2020-08-19 02:39:03,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:39:03,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1328 transitions. [2020-08-19 02:39:03,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 02:39:03,834 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:03,835 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:03,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:39:03,836 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:03,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:03,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1580345337, now seen corresponding path program 1 times [2020-08-19 02:39:03,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:03,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1349538810] [2020-08-19 02:39:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,143 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:04,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:39:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:39:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 02:39:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 02:39:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:39:04,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1349538810] [2020-08-19 02:39:04,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:04,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:04,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103998669] [2020-08-19 02:39:04,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:04,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:04,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:04,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:04,320 INFO L87 Difference]: Start difference. First operand 1066 states and 1328 transitions. Second operand 10 states. [2020-08-19 02:39:04,899 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 02:39:05,444 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:07,332 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:08,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:08,942 INFO L93 Difference]: Finished difference Result 2035 states and 2637 transitions. [2020-08-19 02:39:08,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:39:08,943 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 02:39:08,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:08,952 INFO L225 Difference]: With dead ends: 2035 [2020-08-19 02:39:08,952 INFO L226 Difference]: Without dead ends: 1270 [2020-08-19 02:39:08,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:39:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2020-08-19 02:39:09,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1173. [2020-08-19 02:39:09,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-08-19 02:39:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1439 transitions. [2020-08-19 02:39:09,161 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1439 transitions. Word has length 88 [2020-08-19 02:39:09,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:09,161 INFO L479 AbstractCegarLoop]: Abstraction has 1173 states and 1439 transitions. [2020-08-19 02:39:09,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:09,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1439 transitions. [2020-08-19 02:39:09,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 02:39:09,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:09,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:09,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:39:09,169 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:09,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:09,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1992976932, now seen corresponding path program 1 times [2020-08-19 02:39:09,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:09,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810304563] [2020-08-19 02:39:09,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,439 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:09,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:09,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:09,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:09,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:09,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:09,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:39:09,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:09,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 02:39:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 02:39:09,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:09,648 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 02:39:09,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810304563] [2020-08-19 02:39:09,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:09,653 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:09,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570691642] [2020-08-19 02:39:09,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:09,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:09,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:09,657 INFO L87 Difference]: Start difference. First operand 1173 states and 1439 transitions. Second operand 10 states. [2020-08-19 02:39:10,686 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:10,930 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:11,190 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:11,441 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:12,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:12,425 INFO L93 Difference]: Finished difference Result 2475 states and 3246 transitions. [2020-08-19 02:39:12,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:12,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-19 02:39:12,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:12,434 INFO L225 Difference]: With dead ends: 2475 [2020-08-19 02:39:12,434 INFO L226 Difference]: Without dead ends: 1326 [2020-08-19 02:39:12,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:12,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2020-08-19 02:39:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 1203. [2020-08-19 02:39:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1203 states. [2020-08-19 02:39:12,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1473 transitions. [2020-08-19 02:39:12,708 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1473 transitions. Word has length 141 [2020-08-19 02:39:12,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:12,709 INFO L479 AbstractCegarLoop]: Abstraction has 1203 states and 1473 transitions. [2020-08-19 02:39:12,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:12,709 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1473 transitions. [2020-08-19 02:39:12,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-19 02:39:12,715 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:12,715 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:12,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:39:12,716 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:12,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:12,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1964476642, now seen corresponding path program 1 times [2020-08-19 02:39:12,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:12,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077453559] [2020-08-19 02:39:12,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,980 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:12,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:12,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:12,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:12,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:13,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:13,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:13,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 02:39:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-19 02:39:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-19 02:39:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-19 02:39:13,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077453559] [2020-08-19 02:39:13,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:13,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:13,227 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30621456] [2020-08-19 02:39:13,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:13,230 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:13,231 INFO L87 Difference]: Start difference. First operand 1203 states and 1473 transitions. Second operand 12 states. [2020-08-19 02:39:13,942 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:14,203 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:14,433 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:15,082 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:15,356 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:15,582 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:16,772 INFO L93 Difference]: Finished difference Result 2205 states and 2787 transitions. [2020-08-19 02:39:16,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:39:16,775 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-19 02:39:16,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:16,782 INFO L225 Difference]: With dead ends: 2205 [2020-08-19 02:39:16,783 INFO L226 Difference]: Without dead ends: 1026 [2020-08-19 02:39:16,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-08-19 02:39:16,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 970. [2020-08-19 02:39:16,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-08-19 02:39:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1172 transitions. [2020-08-19 02:39:16,975 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1172 transitions. Word has length 141 [2020-08-19 02:39:16,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:16,976 INFO L479 AbstractCegarLoop]: Abstraction has 970 states and 1172 transitions. [2020-08-19 02:39:16,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:16,976 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1172 transitions. [2020-08-19 02:39:16,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-19 02:39:16,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:16,980 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:16,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:39:16,980 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:16,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:16,980 INFO L82 PathProgramCache]: Analyzing trace with hash -872576729, now seen corresponding path program 1 times [2020-08-19 02:39:16,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:16,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1335086015] [2020-08-19 02:39:16,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:17,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,332 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:17,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:17,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:17,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:39:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:39:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:17,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 02:39:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-19 02:39:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:39:17,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1335086015] [2020-08-19 02:39:17,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:17,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:17,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025901057] [2020-08-19 02:39:17,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:17,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:17,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:17,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:17,659 INFO L87 Difference]: Start difference. First operand 970 states and 1172 transitions. Second operand 13 states. [2020-08-19 02:39:18,393 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:19,168 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:20,561 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:20,905 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:21,189 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:21,430 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:21,753 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:22,006 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:23,041 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:23,286 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:23,565 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:23,830 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:24,532 INFO L93 Difference]: Finished difference Result 2803 states and 3512 transitions. [2020-08-19 02:39:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:39:24,533 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 145 [2020-08-19 02:39:24,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:24,546 INFO L225 Difference]: With dead ends: 2803 [2020-08-19 02:39:24,546 INFO L226 Difference]: Without dead ends: 1857 [2020-08-19 02:39:24,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 02:39:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2020-08-19 02:39:24,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 1755. [2020-08-19 02:39:24,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1755 states. [2020-08-19 02:39:24,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2091 transitions. [2020-08-19 02:39:24,869 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2091 transitions. Word has length 145 [2020-08-19 02:39:24,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:24,871 INFO L479 AbstractCegarLoop]: Abstraction has 1755 states and 2091 transitions. [2020-08-19 02:39:24,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 02:39:24,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2091 transitions. [2020-08-19 02:39:24,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 02:39:24,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:24,877 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:24,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:39:24,877 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:24,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:24,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1489780363, now seen corresponding path program 1 times [2020-08-19 02:39:24,878 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:24,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628929306] [2020-08-19 02:39:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,133 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:25,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:25,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:25,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:25,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 02:39:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:39:25,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:25,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:25,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 02:39:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 02:39:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:25,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:39:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 02:39:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 02:39:25,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628929306] [2020-08-19 02:39:25,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:25,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 02:39:25,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062647329] [2020-08-19 02:39:25,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 02:39:25,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 02:39:25,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:25,673 INFO L87 Difference]: Start difference. First operand 1755 states and 2091 transitions. Second operand 18 states. [2020-08-19 02:39:26,159 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:26,493 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:26,754 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:27,003 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:27,612 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:29,245 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:29,626 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:29,900 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:30,148 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:30,499 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:30,746 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:31,276 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-19 02:39:31,756 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 190 [2020-08-19 02:39:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:33,349 INFO L93 Difference]: Finished difference Result 3380 states and 4249 transitions. [2020-08-19 02:39:33,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 02:39:33,350 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 149 [2020-08-19 02:39:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:33,362 INFO L225 Difference]: With dead ends: 3380 [2020-08-19 02:39:33,362 INFO L226 Difference]: Without dead ends: 1959 [2020-08-19 02:39:33,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=364, Invalid=1442, Unknown=0, NotChecked=0, Total=1806 [2020-08-19 02:39:33,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1959 states. [2020-08-19 02:39:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1959 to 1677. [2020-08-19 02:39:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-19 02:39:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1989 transitions. [2020-08-19 02:39:33,774 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1989 transitions. Word has length 149 [2020-08-19 02:39:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:33,777 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1989 transitions. [2020-08-19 02:39:33,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 02:39:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1989 transitions. [2020-08-19 02:39:33,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 02:39:33,782 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:33,782 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:33,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:39:33,783 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:33,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:33,783 INFO L82 PathProgramCache]: Analyzing trace with hash -913393781, now seen corresponding path program 2 times [2020-08-19 02:39:33,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:33,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621938603] [2020-08-19 02:39:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:33,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,075 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:34,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:34,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:34,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:34,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:34,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-19 02:39:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-19 02:39:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-19 02:39:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:39:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 02:39:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,243 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-19 02:39:34,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621938603] [2020-08-19 02:39:34,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:34,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:39:34,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918851886] [2020-08-19 02:39:34,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:39:34,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:34,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:39:34,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:34,246 INFO L87 Difference]: Start difference. First operand 1677 states and 1989 transitions. Second operand 11 states. [2020-08-19 02:39:34,954 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:37,014 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:37,263 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:37,536 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:37,808 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:38,064 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:38,663 INFO L93 Difference]: Finished difference Result 1987 states and 2521 transitions. [2020-08-19 02:39:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 02:39:38,664 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-19 02:39:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:38,677 INFO L225 Difference]: With dead ends: 1987 [2020-08-19 02:39:38,677 INFO L226 Difference]: Without dead ends: 1984 [2020-08-19 02:39:38,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=171, Invalid=429, Unknown=0, NotChecked=0, Total=600 [2020-08-19 02:39:38,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2020-08-19 02:39:39,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1677. [2020-08-19 02:39:39,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1677 states. [2020-08-19 02:39:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1677 states to 1677 states and 1979 transitions. [2020-08-19 02:39:39,057 INFO L78 Accepts]: Start accepts. Automaton has 1677 states and 1979 transitions. Word has length 149 [2020-08-19 02:39:39,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:39,060 INFO L479 AbstractCegarLoop]: Abstraction has 1677 states and 1979 transitions. [2020-08-19 02:39:39,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:39:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1677 states and 1979 transitions. [2020-08-19 02:39:39,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-19 02:39:39,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:39,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-19 02:39:39,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:39:39,067 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:39,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:39,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1994425787, now seen corresponding path program 1 times [2020-08-19 02:39:39,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:39,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200881972] [2020-08-19 02:39:39,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,367 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:39,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 02:39:39,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:39:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-19 02:39:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 02:39:39,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 02:39:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-19 02:39:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 02:39:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:39,607 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:39:39,608 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200881972] [2020-08-19 02:39:39,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:39,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:39,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535521690] [2020-08-19 02:39:39,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:39,609 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:39,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:39,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:39,610 INFO L87 Difference]: Start difference. First operand 1677 states and 1979 transitions. Second operand 12 states. [2020-08-19 02:39:40,003 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:40,849 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189