/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 00:57:23,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 00:57:23,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 00:57:23,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 00:57:23,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 00:57:23,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 00:57:23,747 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 00:57:23,749 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 00:57:23,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 00:57:23,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 00:57:23,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 00:57:23,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 00:57:23,753 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 00:57:23,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 00:57:23,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 00:57:23,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 00:57:23,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 00:57:23,758 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 00:57:23,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 00:57:23,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 00:57:23,763 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 00:57:23,764 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 00:57:23,765 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 00:57:23,765 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 00:57:23,768 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 00:57:23,768 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 00:57:23,768 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 00:57:23,769 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 00:57:23,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 00:57:23,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 00:57:23,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 00:57:23,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 00:57:23,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 00:57:23,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 00:57:23,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 00:57:23,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 00:57:23,774 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 00:57:23,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 00:57:23,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 00:57:23,776 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 00:57:23,776 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 00:57:23,777 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 00:57:23,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 00:57:23,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 00:57:23,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 00:57:23,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 00:57:23,801 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 00:57:23,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 00:57:23,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 00:57:23,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 00:57:23,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 00:57:23,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 00:57:23,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 00:57:23,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 00:57:23,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 00:57:23,803 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 00:57:23,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 00:57:23,804 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 00:57:23,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 00:57:23,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 00:57:23,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 00:57:23,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 00:57:23,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 00:57:23,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:57:23,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 00:57:23,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 00:57:23,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 00:57:23,806 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 00:57:23,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 00:57:23,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 00:57:23,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 00:57:23,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6; [2020-08-19 00:57:24,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 00:57:24,135 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 00:57:24,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 00:57:24,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 00:57:24,141 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 00:57:24,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-19 00:57:24,216 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19e860b8b/f338d9b1695b4977a7fee47918263fc0/FLAG3099e2f46 [2020-08-19 00:57:24,822 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 00:57:24,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product54.cil.c [2020-08-19 00:57:24,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19e860b8b/f338d9b1695b4977a7fee47918263fc0/FLAG3099e2f46 [2020-08-19 00:57:25,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/19e860b8b/f338d9b1695b4977a7fee47918263fc0 [2020-08-19 00:57:25,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 00:57:25,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 00:57:25,136 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:25,137 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 00:57:25,140 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 00:57:25,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b3b79aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25, skipping insertion in model container [2020-08-19 00:57:25,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 00:57:25,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 00:57:25,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:25,590 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 00:57:25,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 00:57:25,735 INFO L208 MainTranslator]: Completed translation [2020-08-19 00:57:25,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25 WrapperNode [2020-08-19 00:57:25,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 00:57:25,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 00:57:25,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 00:57:25,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 00:57:25,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... [2020-08-19 00:57:25,837 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 00:57:25,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 00:57:25,838 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 00:57:25,838 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 00:57:25,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 00:57:25,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 00:57:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 00:57:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:25,906 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 00:57:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 00:57:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 00:57:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 00:57:25,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 00:57:25,908 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 00:57:25,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 00:57:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 00:57:25,910 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 00:57:25,911 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 00:57:25,912 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 00:57:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 00:57:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 00:57:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 00:57:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 00:57:25,913 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 00:57:25,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 00:57:25,915 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 00:57:25,916 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 00:57:25,917 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 00:57:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 00:57:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 00:57:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 00:57:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 00:57:25,918 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 00:57:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 00:57:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 00:57:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 00:57:25,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 00:57:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 00:57:25,920 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 00:57:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 00:57:25,921 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 00:57:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 00:57:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 00:57:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 00:57:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 00:57:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 00:57:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 00:57:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 00:57:27,043 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 00:57:27,043 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 00:57:27,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:27 BoogieIcfgContainer [2020-08-19 00:57:27,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 00:57:27,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 00:57:27,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 00:57:27,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 00:57:27,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 12:57:25" (1/3) ... [2020-08-19 00:57:27,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1eeaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:27, skipping insertion in model container [2020-08-19 00:57:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 12:57:25" (2/3) ... [2020-08-19 00:57:27,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e1eeaf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 12:57:27, skipping insertion in model container [2020-08-19 00:57:27,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 12:57:27" (3/3) ... [2020-08-19 00:57:27,057 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product54.cil.c [2020-08-19 00:57:27,068 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 00:57:27,077 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 00:57:27,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 00:57:27,117 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 00:57:27,117 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 00:57:27,117 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 00:57:27,118 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 00:57:27,118 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 00:57:27,118 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 00:57:27,118 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 00:57:27,118 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 00:57:27,141 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states. [2020-08-19 00:57:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 00:57:27,153 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:27,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:27,155 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:27,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:27,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1445624956, now seen corresponding path program 1 times [2020-08-19 00:57:27,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:27,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861911541] [2020-08-19 00:57:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,893 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:27,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:27,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:27,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 00:57:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:57:27,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:27,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:27,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861911541] [2020-08-19 00:57:27,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:27,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 00:57:27,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683635167] [2020-08-19 00:57:27,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 00:57:27,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:28,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 00:57:28,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:28,014 INFO L87 Difference]: Start difference. First operand 195 states. Second operand 4 states. [2020-08-19 00:57:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:29,331 INFO L93 Difference]: Finished difference Result 338 states and 440 transitions. [2020-08-19 00:57:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 00:57:29,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 00:57:29,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:29,360 INFO L225 Difference]: With dead ends: 338 [2020-08-19 00:57:29,360 INFO L226 Difference]: Without dead ends: 187 [2020-08-19 00:57:29,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 00:57:29,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-08-19 00:57:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 152. [2020-08-19 00:57:29,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-08-19 00:57:29,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-08-19 00:57:29,532 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 51 [2020-08-19 00:57:29,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:29,533 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-08-19 00:57:29,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 00:57:29,533 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-08-19 00:57:29,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 00:57:29,545 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:29,545 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] [2020-08-19 00:57:29,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 00:57:29,546 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:29,547 INFO L82 PathProgramCache]: Analyzing trace with hash 313505704, now seen corresponding path program 1 times [2020-08-19 00:57:29,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:29,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013166710] [2020-08-19 00:57:29,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,953 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:29,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:29,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:29,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 00:57:29,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 00:57:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:30,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013166710] [2020-08-19 00:57:30,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:30,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 00:57:30,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353785216] [2020-08-19 00:57:30,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 00:57:30,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:30,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 00:57:30,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 00:57:30,011 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 5 states. [2020-08-19 00:57:30,447 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:31,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:31,534 INFO L93 Difference]: Finished difference Result 279 states and 347 transitions. [2020-08-19 00:57:31,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 00:57:31,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 00:57:31,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:31,539 INFO L225 Difference]: With dead ends: 279 [2020-08-19 00:57:31,541 INFO L226 Difference]: Without dead ends: 177 [2020-08-19 00:57:31,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:57:31,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-19 00:57:31,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-19 00:57:31,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 00:57:31,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 168 transitions. [2020-08-19 00:57:31,618 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 168 transitions. Word has length 52 [2020-08-19 00:57:31,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:31,619 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 168 transitions. [2020-08-19 00:57:31,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 00:57:31,619 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 168 transitions. [2020-08-19 00:57:31,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 00:57:31,624 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:31,624 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 00:57:31,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 00:57:31,625 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:31,625 INFO L82 PathProgramCache]: Analyzing trace with hash -1935207340, now seen corresponding path program 1 times [2020-08-19 00:57:31,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:31,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382134284] [2020-08-19 00:57:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,006 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:32,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:32,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:32,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:32,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 00:57:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:57:32,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:32,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:32,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382134284] [2020-08-19 00:57:32,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:32,124 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:57:32,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657616049] [2020-08-19 00:57:32,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:57:32,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:32,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:57:32,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:57:32,133 INFO L87 Difference]: Start difference. First operand 143 states and 168 transitions. Second operand 9 states. [2020-08-19 00:57:32,504 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:32,833 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:33,123 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:33,356 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:34,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:34,773 INFO L93 Difference]: Finished difference Result 292 states and 366 transitions. [2020-08-19 00:57:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 00:57:34,776 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 57 [2020-08-19 00:57:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:34,779 INFO L225 Difference]: With dead ends: 292 [2020-08-19 00:57:34,779 INFO L226 Difference]: Without dead ends: 177 [2020-08-19 00:57:34,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 00:57:34,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-08-19 00:57:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 143. [2020-08-19 00:57:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-08-19 00:57:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2020-08-19 00:57:34,819 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 57 [2020-08-19 00:57:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:34,820 INFO L479 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2020-08-19 00:57:34,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2020-08-19 00:57:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-08-19 00:57:34,821 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:34,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:34,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 00:57:34,822 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:34,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:34,822 INFO L82 PathProgramCache]: Analyzing trace with hash 979214064, now seen corresponding path program 1 times [2020-08-19 00:57:34,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:34,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810026679] [2020-08-19 00:57:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:34,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,121 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:57:35,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:35,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:35,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-19 00:57:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-19 00:57:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:35,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:35,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810026679] [2020-08-19 00:57:35,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:35,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 00:57:35,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109364165] [2020-08-19 00:57:35,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 00:57:35,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:35,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 00:57:35,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 00:57:35,267 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand 7 states. [2020-08-19 00:57:35,650 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:36,970 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:37,827 INFO L93 Difference]: Finished difference Result 397 states and 501 transitions. [2020-08-19 00:57:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:57:37,828 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-08-19 00:57:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:37,832 INFO L225 Difference]: With dead ends: 397 [2020-08-19 00:57:37,833 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 00:57:37,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 00:57:37,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 00:57:37,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 233. [2020-08-19 00:57:37,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-08-19 00:57:37,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 266 transitions. [2020-08-19 00:57:37,880 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 266 transitions. Word has length 75 [2020-08-19 00:57:37,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:37,881 INFO L479 AbstractCegarLoop]: Abstraction has 233 states and 266 transitions. [2020-08-19 00:57:37,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 00:57:37,881 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 266 transitions. [2020-08-19 00:57:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 00:57:37,883 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:37,883 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:37,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 00:57:37,883 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:37,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:37,884 INFO L82 PathProgramCache]: Analyzing trace with hash -919866488, now seen corresponding path program 1 times [2020-08-19 00:57:37,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:37,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2027744867] [2020-08-19 00:57:37,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:37,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,164 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:38,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:38,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 00:57:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:38,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:38,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 00:57:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 00:57:38,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:38,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:38,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2027744867] [2020-08-19 00:57:38,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:38,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 00:57:38,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348378545] [2020-08-19 00:57:38,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 00:57:38,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:38,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 00:57:38,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 00:57:38,296 INFO L87 Difference]: Start difference. First operand 233 states and 266 transitions. Second operand 9 states. [2020-08-19 00:57:38,683 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:40,027 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:40,304 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:40,563 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:40,797 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:42,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:42,298 INFO L93 Difference]: Finished difference Result 695 states and 864 transitions. [2020-08-19 00:57:42,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 00:57:42,298 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-08-19 00:57:42,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:42,302 INFO L225 Difference]: With dead ends: 695 [2020-08-19 00:57:42,302 INFO L226 Difference]: Without dead ends: 490 [2020-08-19 00:57:42,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 00:57:42,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-08-19 00:57:42,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 414. [2020-08-19 00:57:42,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 414 states. [2020-08-19 00:57:42,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 472 transitions. [2020-08-19 00:57:42,392 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 472 transitions. Word has length 89 [2020-08-19 00:57:42,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:42,392 INFO L479 AbstractCegarLoop]: Abstraction has 414 states and 472 transitions. [2020-08-19 00:57:42,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 00:57:42,393 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 472 transitions. [2020-08-19 00:57:42,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-19 00:57:42,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:42,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:42,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 00:57:42,395 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:42,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:42,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1008826772, now seen corresponding path program 1 times [2020-08-19 00:57:42,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:42,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158342791] [2020-08-19 00:57:42,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,712 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:42,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:42,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:42,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:42,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-19 00:57:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 00:57:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:42,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158342791] [2020-08-19 00:57:42,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:42,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:42,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702870688] [2020-08-19 00:57:42,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:42,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:42,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:42,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:42,839 INFO L87 Difference]: Start difference. First operand 414 states and 472 transitions. Second operand 10 states. [2020-08-19 00:57:43,288 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:44,495 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:44,723 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:44,966 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:45,222 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:46,560 INFO L93 Difference]: Finished difference Result 914 states and 1119 transitions. [2020-08-19 00:57:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:57:46,561 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-19 00:57:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:46,569 INFO L225 Difference]: With dead ends: 914 [2020-08-19 00:57:46,569 INFO L226 Difference]: Without dead ends: 528 [2020-08-19 00:57:46,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 00:57:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2020-08-19 00:57:46,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 413. [2020-08-19 00:57:46,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-08-19 00:57:46,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 469 transitions. [2020-08-19 00:57:46,699 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 469 transitions. Word has length 93 [2020-08-19 00:57:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:46,700 INFO L479 AbstractCegarLoop]: Abstraction has 413 states and 469 transitions. [2020-08-19 00:57:46,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 469 transitions. [2020-08-19 00:57:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:57:46,703 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:46,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:46,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 00:57:46,704 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:46,704 INFO L82 PathProgramCache]: Analyzing trace with hash 390870795, now seen corresponding path program 1 times [2020-08-19 00:57:46,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:46,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109470180] [2020-08-19 00:57:46,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,947 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:46,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:46,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:46,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:47,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:47,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:57:47,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:47,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:47,112 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109470180] [2020-08-19 00:57:47,113 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:47,113 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 00:57:47,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361173136] [2020-08-19 00:57:47,114 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 00:57:47,114 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:47,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 00:57:47,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 00:57:47,120 INFO L87 Difference]: Start difference. First operand 413 states and 469 transitions. Second operand 10 states. [2020-08-19 00:57:48,321 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:57:48,583 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 00:57:48,832 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:49,057 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:50,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:50,379 INFO L93 Difference]: Finished difference Result 917 states and 1130 transitions. [2020-08-19 00:57:50,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 00:57:50,380 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 94 [2020-08-19 00:57:50,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:50,384 INFO L225 Difference]: With dead ends: 917 [2020-08-19 00:57:50,385 INFO L226 Difference]: Without dead ends: 532 [2020-08-19 00:57:50,386 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 00:57:50,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-19 00:57:50,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 423. [2020-08-19 00:57:50,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-19 00:57:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 479 transitions. [2020-08-19 00:57:50,474 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 479 transitions. Word has length 94 [2020-08-19 00:57:50,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:50,475 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 479 transitions. [2020-08-19 00:57:50,475 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 00:57:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 479 transitions. [2020-08-19 00:57:50,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:57:50,477 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:50,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:50,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 00:57:50,477 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash 318484237, now seen corresponding path program 1 times [2020-08-19 00:57:50,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:50,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526827893] [2020-08-19 00:57:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,792 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:50,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:50,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:50,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:57:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:50,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526827893] [2020-08-19 00:57:50,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:50,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 00:57:50,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627655048] [2020-08-19 00:57:50,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 00:57:50,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:50,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 00:57:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 00:57:50,967 INFO L87 Difference]: Start difference. First operand 423 states and 479 transitions. Second operand 12 states. [2020-08-19 00:57:51,455 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:51,700 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:51,922 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:52,624 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:52,869 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:53,120 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:57:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:54,535 INFO L93 Difference]: Finished difference Result 941 states and 1174 transitions. [2020-08-19 00:57:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 00:57:54,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 94 [2020-08-19 00:57:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:54,540 INFO L225 Difference]: With dead ends: 941 [2020-08-19 00:57:54,541 INFO L226 Difference]: Without dead ends: 546 [2020-08-19 00:57:54,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 00:57:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2020-08-19 00:57:54,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 431. [2020-08-19 00:57:54,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-19 00:57:54,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 487 transitions. [2020-08-19 00:57:54,618 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 487 transitions. Word has length 94 [2020-08-19 00:57:54,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:54,619 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 487 transitions. [2020-08-19 00:57:54,619 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 00:57:54,619 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 487 transitions. [2020-08-19 00:57:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-08-19 00:57:54,621 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:54,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:54,621 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 00:57:54,621 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:54,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:54,622 INFO L82 PathProgramCache]: Analyzing trace with hash 648249998, now seen corresponding path program 1 times [2020-08-19 00:57:54,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:54,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269046085] [2020-08-19 00:57:54,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,861 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:54,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:54,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:54,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 00:57:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 00:57:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:54,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:54,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 00:57:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:54,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 00:57:54,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:55,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:55,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269046085] [2020-08-19 00:57:55,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:55,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:57:55,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12156992] [2020-08-19 00:57:55,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:57:55,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:55,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:57:55,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:57:55,031 INFO L87 Difference]: Start difference. First operand 431 states and 487 transitions. Second operand 8 states. [2020-08-19 00:57:55,512 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:56,152 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:57:58,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:57:58,947 INFO L93 Difference]: Finished difference Result 1309 states and 1687 transitions. [2020-08-19 00:57:58,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 00:57:58,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-08-19 00:57:58,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:57:58,957 INFO L225 Difference]: With dead ends: 1309 [2020-08-19 00:57:58,958 INFO L226 Difference]: Without dead ends: 906 [2020-08-19 00:57:58,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-08-19 00:57:58,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2020-08-19 00:57:59,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 761. [2020-08-19 00:57:59,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-08-19 00:57:59,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 889 transitions. [2020-08-19 00:57:59,148 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 889 transitions. Word has length 94 [2020-08-19 00:57:59,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:57:59,148 INFO L479 AbstractCegarLoop]: Abstraction has 761 states and 889 transitions. [2020-08-19 00:57:59,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:57:59,149 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 889 transitions. [2020-08-19 00:57:59,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-08-19 00:57:59,152 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:57:59,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:57:59,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 00:57:59,152 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:57:59,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:57:59,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1149612728, now seen corresponding path program 1 times [2020-08-19 00:57:59,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:57:59,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299924826] [2020-08-19 00:57:59,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:57:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,409 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:57:59,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:57:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:57:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:57:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:57:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:57:59,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:57:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:57:59,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:57:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-19 00:57:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:59,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:57:59,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:57:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:57:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 00:57:59,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 00:57:59,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:57:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 00:57:59,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299924826] [2020-08-19 00:57:59,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 00:57:59,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 00:57:59,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977669234] [2020-08-19 00:57:59,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 00:57:59,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:57:59,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 00:57:59,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-08-19 00:57:59,517 INFO L87 Difference]: Start difference. First operand 761 states and 889 transitions. Second operand 8 states. [2020-08-19 00:57:59,967 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:02,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:02,768 INFO L93 Difference]: Finished difference Result 1499 states and 1925 transitions. [2020-08-19 00:58:02,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 00:58:02,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 98 [2020-08-19 00:58:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:02,780 INFO L225 Difference]: With dead ends: 1499 [2020-08-19 00:58:02,780 INFO L226 Difference]: Without dead ends: 1496 [2020-08-19 00:58:02,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=212, Invalid=544, Unknown=0, NotChecked=0, Total=756 [2020-08-19 00:58:02,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2020-08-19 00:58:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1269. [2020-08-19 00:58:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1269 states. [2020-08-19 00:58:03,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1498 transitions. [2020-08-19 00:58:03,019 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1498 transitions. Word has length 98 [2020-08-19 00:58:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:03,020 INFO L479 AbstractCegarLoop]: Abstraction has 1269 states and 1498 transitions. [2020-08-19 00:58:03,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 00:58:03,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1498 transitions. [2020-08-19 00:58:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-08-19 00:58:03,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:03,025 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, 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] [2020-08-19 00:58:03,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 00:58:03,025 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:03,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:03,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1054262603, now seen corresponding path program 1 times [2020-08-19 00:58:03,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:03,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316964442] [2020-08-19 00:58:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,364 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:03,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:03,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:03,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:03,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:03,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 00:58:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:03,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 00:58:03,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-08-19 00:58:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 00:58:03,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316964442] [2020-08-19 00:58:03,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:03,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 00:58:03,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673034402] [2020-08-19 00:58:03,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 00:58:03,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:03,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 00:58:03,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-08-19 00:58:03,603 INFO L87 Difference]: Start difference. First operand 1269 states and 1498 transitions. Second operand 13 states. [2020-08-19 00:58:04,135 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:04,378 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:04,621 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 00:58:05,753 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:07,920 INFO L93 Difference]: Finished difference Result 2281 states and 2814 transitions. [2020-08-19 00:58:07,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 00:58:07,921 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 162 [2020-08-19 00:58:07,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:07,935 INFO L225 Difference]: With dead ends: 2281 [2020-08-19 00:58:07,936 INFO L226 Difference]: Without dead ends: 1182 [2020-08-19 00:58:07,942 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 00:58:07,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2020-08-19 00:58:08,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1046. [2020-08-19 00:58:08,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-08-19 00:58:08,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1220 transitions. [2020-08-19 00:58:08,209 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1220 transitions. Word has length 162 [2020-08-19 00:58:08,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:08,210 INFO L479 AbstractCegarLoop]: Abstraction has 1046 states and 1220 transitions. [2020-08-19 00:58:08,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 00:58:08,210 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1220 transitions. [2020-08-19 00:58:08,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-08-19 00:58:08,214 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 00:58:08,215 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 00:58:08,215 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 00:58:08,215 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 00:58:08,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 00:58:08,216 INFO L82 PathProgramCache]: Analyzing trace with hash 1747787381, now seen corresponding path program 1 times [2020-08-19 00:58:08,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 00:58:08,216 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [944506182] [2020-08-19 00:58:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 00:58:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,596 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 00:58:08,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 00:58:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 00:58:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 00:58:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 00:58:08,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 00:58:08,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 00:58:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 00:58:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 00:58:08,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 00:58:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:08,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 00:58:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 00:58:08,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 00:58:08,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-19 00:58:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 00:58:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 00:58:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 00:58:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 00:58:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 00:58:08,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-19 00:58:08,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 00:58:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 00:58:08,958 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-19 00:58:08,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [944506182] [2020-08-19 00:58:08,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 00:58:08,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 00:58:08,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169020126] [2020-08-19 00:58:08,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 00:58:08,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 00:58:08,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 00:58:08,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 00:58:08,962 INFO L87 Difference]: Start difference. First operand 1046 states and 1220 transitions. Second operand 19 states. [2020-08-19 00:58:09,762 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:10,267 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:10,653 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:11,025 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 00:58:11,823 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 00:58:13,255 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:13,639 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:15,197 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:15,474 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:15,767 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:16,026 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:16,283 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:16,536 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:16,837 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:17,092 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 00:58:18,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 00:58:18,559 INFO L93 Difference]: Finished difference Result 2018 states and 2444 transitions. [2020-08-19 00:58:18,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-08-19 00:58:18,560 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 175 [2020-08-19 00:58:18,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 00:58:18,561 INFO L225 Difference]: With dead ends: 2018 [2020-08-19 00:58:18,561 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 00:58:18,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=591, Invalid=2715, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 00:58:18,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 00:58:18,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 00:58:18,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 00:58:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 00:58:18,568 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 175 [2020-08-19 00:58:18,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 00:58:18,569 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 00:58:18,569 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 00:58:18,569 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 00:58:18,569 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 00:58:18,569 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 00:58:18,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 00:58:19,299 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 29 [2020-08-19 00:58:19,819 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-19 00:58:19,952 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-19 00:58:20,089 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31 [2020-08-19 00:58:20,366 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 31