/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:05:49,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:05:49,671 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:05:49,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:05:49,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:05:49,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:05:49,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:05:49,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:05:49,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:05:49,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:05:49,727 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:05:49,728 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:05:49,729 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:05:49,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:05:49,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:05:49,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:05:49,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:05:49,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:05:49,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:05:49,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:05:49,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:05:49,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:05:49,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:05:49,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:05:49,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:05:49,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:05:49,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:05:49,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:05:49,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:05:49,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:05:49,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:05:49,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:05:49,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:05:49,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:05:49,774 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:05:49,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:05:49,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:05:49,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:05:49,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:05:49,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:05:49,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:05:49,779 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 [2020-08-22 02:05:49,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:05:49,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:05:49,820 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:05:49,821 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:05:49,821 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:05:49,821 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:05:49,821 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:05:49,822 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:05:49,822 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:05:49,822 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:05:49,823 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:05:49,823 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:05:49,823 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:05:49,824 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:05:49,824 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:05:49,824 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:05:49,824 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:05:49,825 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:05:49,825 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:05:49,825 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:05:49,825 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:05:49,825 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:05:49,826 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:05:49,826 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:05:49,826 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:05:49,826 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:05:49,826 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:05:49,827 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:05:49,827 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:05:49,827 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-08-22 02:05:50,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:05:50,130 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:05:50,134 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:05:50,135 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:05:50,136 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:05:50,136 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-22 02:05:50,196 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f638db65/7629e95711794c198a0cd7b627a4fa17/FLAGcc73455d2 [2020-08-22 02:05:50,726 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:05:50,727 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product35.cil.c [2020-08-22 02:05:50,743 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f638db65/7629e95711794c198a0cd7b627a4fa17/FLAGcc73455d2 [2020-08-22 02:05:50,988 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3f638db65/7629e95711794c198a0cd7b627a4fa17 [2020-08-22 02:05:50,998 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:05:51,000 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:05:51,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:05:51,001 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:05:51,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:05:51,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:05:50" (1/1) ... [2020-08-22 02:05:51,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17979b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51, skipping insertion in model container [2020-08-22 02:05:51,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:05:50" (1/1) ... [2020-08-22 02:05:51,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:05:51,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:05:51,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:05:51,501 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:05:51,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:05:51,624 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:05:51,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51 WrapperNode [2020-08-22 02:05:51,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:05:51,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:05:51,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:05:51,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:05:51,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,665 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (1/1) ... [2020-08-22 02:05:51,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:05:51,726 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:05:51,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:05:51,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:05:51,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (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 [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:05:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 02:05:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 02:05:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 02:05:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 02:05:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 02:05:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 02:05:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 02:05:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 02:05:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 02:05:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 02:05:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 02:05:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 02:05:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:05:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 02:05:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 02:05:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 02:05:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 02:05:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 02:05:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 02:05:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 02:05:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:05:51,794 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 02:05:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:05:52,864 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:05:52,864 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 02:05:52,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:05:52 BoogieIcfgContainer [2020-08-22 02:05:52,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:05:52,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:05:52,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:05:52,875 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:05:52,875 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:05:50" (1/3) ... [2020-08-22 02:05:52,876 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eba9b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:05:52, skipping insertion in model container [2020-08-22 02:05:52,876 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:05:51" (2/3) ... [2020-08-22 02:05:52,877 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eba9b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:05:52, skipping insertion in model container [2020-08-22 02:05:52,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:05:52" (3/3) ... [2020-08-22 02:05:52,879 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2020-08-22 02:05:52,890 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:05:52,898 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:05:52,913 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:05:52,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:05:52,939 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:05:52,939 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:05:52,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:05:52,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:05:52,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:05:52,940 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:05:52,940 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:05:52,964 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-08-22 02:05:52,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 02:05:52,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:05:52,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:05:52,976 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:05:52,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:05:52,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1148002369, now seen corresponding path program 1 times [2020-08-22 02:05:52,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:05:52,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621477583] [2020-08-22 02:05:52,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:05:53,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,707 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:05:53,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:05:53,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:05:53,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:05:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:05:53,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:05:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:05:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 02:05:53,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:53,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:05:53,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621477583] [2020-08-22 02:05:53,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:05:53,828 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 02:05:53,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133057550] [2020-08-22 02:05:53,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 02:05:53,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:05:53,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 02:05:53,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:05:53,862 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 3 states. [2020-08-22 02:05:54,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:05:54,964 INFO L93 Difference]: Finished difference Result 269 states and 354 transitions. [2020-08-22 02:05:54,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:05:54,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 02:05:54,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:05:54,983 INFO L225 Difference]: With dead ends: 269 [2020-08-22 02:05:54,983 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 02:05:54,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 02:05:55,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 02:05:55,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2020-08-22 02:05:55,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 02:05:55,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2020-08-22 02:05:55,104 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 46 [2020-08-22 02:05:55,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:05:55,105 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2020-08-22 02:05:55,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 02:05:55,105 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2020-08-22 02:05:55,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 02:05:55,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:05:55,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:05:55,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:05:55,110 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:05:55,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:05:55,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1455677075, now seen corresponding path program 1 times [2020-08-22 02:05:55,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:05:55,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809153466] [2020-08-22 02:05:55,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:05:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,528 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:05:55,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:05:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:05:55,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:05:55,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:05:55,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:05:55,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:05:55,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 02:05:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:55,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:05:55,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809153466] [2020-08-22 02:05:55,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:05:55,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:05:55,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605678320] [2020-08-22 02:05:55,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:05:55,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:05:55,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:05:55,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:05:55,576 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand 4 states. [2020-08-22 02:05:56,025 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:05:56,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:05:56,773 INFO L93 Difference]: Finished difference Result 193 states and 235 transitions. [2020-08-22 02:05:56,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 02:05:56,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 02:05:56,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:05:56,776 INFO L225 Difference]: With dead ends: 193 [2020-08-22 02:05:56,776 INFO L226 Difference]: Without dead ends: 130 [2020-08-22 02:05:56,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:05:56,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-22 02:05:56,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 105. [2020-08-22 02:05:56,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 02:05:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2020-08-22 02:05:56,819 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 47 [2020-08-22 02:05:56,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:05:56,820 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2020-08-22 02:05:56,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:05:56,820 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2020-08-22 02:05:56,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 02:05:56,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:05:56,823 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] [2020-08-22 02:05:56,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:05:56,823 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:05:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:05:56,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1980509365, now seen corresponding path program 1 times [2020-08-22 02:05:56,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:05:56,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [563085216] [2020-08-22 02:05:56,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:05:56,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,204 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:05:57,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:05:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:05:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:05:57,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:05:57,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:05:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:05:57,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:05:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:05:57,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:05:57,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [563085216] [2020-08-22 02:05:57,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:05:57,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 02:05:57,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242337163] [2020-08-22 02:05:57,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 02:05:57,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:05:57,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 02:05:57,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 02:05:57,295 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand 8 states. [2020-08-22 02:05:57,745 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:05:58,055 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:05:58,320 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:05:58,551 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:05:59,284 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:00,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:00,609 INFO L93 Difference]: Finished difference Result 363 states and 449 transitions. [2020-08-22 02:06:00,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:06:00,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 02:06:00,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:00,614 INFO L225 Difference]: With dead ends: 363 [2020-08-22 02:06:00,614 INFO L226 Difference]: Without dead ends: 282 [2020-08-22 02:06:00,615 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:06:00,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-22 02:06:00,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 216. [2020-08-22 02:06:00,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-08-22 02:06:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2020-08-22 02:06:00,681 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 51 [2020-08-22 02:06:00,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:00,682 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2020-08-22 02:06:00,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 02:06:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2020-08-22 02:06:00,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 02:06:00,685 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:00,685 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] [2020-08-22 02:06:00,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 02:06:00,685 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:00,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1381408640, now seen corresponding path program 1 times [2020-08-22 02:06:00,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:00,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896540748] [2020-08-22 02:06:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:00,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,002 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:01,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:01,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:01,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:01,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 02:06:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 02:06:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:01,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:01,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896540748] [2020-08-22 02:06:01,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:01,144 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 02:06:01,144 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767186097] [2020-08-22 02:06:01,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:01,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:01,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:01,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:01,146 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand 12 states. [2020-08-22 02:06:01,575 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:01,880 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:02,123 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:02,356 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:02,921 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:03,653 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:04,028 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:04,325 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:04,596 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:04,828 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:05,185 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:05,456 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:05,687 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:07,016 INFO L93 Difference]: Finished difference Result 861 states and 1198 transitions. [2020-08-22 02:06:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 02:06:07,016 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 02:06:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:07,023 INFO L225 Difference]: With dead ends: 861 [2020-08-22 02:06:07,024 INFO L226 Difference]: Without dead ends: 669 [2020-08-22 02:06:07,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:06:07,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2020-08-22 02:06:07,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 580. [2020-08-22 02:06:07,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-08-22 02:06:07,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-08-22 02:06:07,150 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 57 [2020-08-22 02:06:07,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:07,150 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-08-22 02:06:07,151 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:07,151 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-08-22 02:06:07,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 02:06:07,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:07,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:07,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 02:06:07,155 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:07,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:07,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1781576154, now seen corresponding path program 1 times [2020-08-22 02:06:07,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:07,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097901674] [2020-08-22 02:06:07,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:07,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,396 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:07,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 02:06:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 02:06:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 02:06:07,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 02:06:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:07,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 02:06:07,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097901674] [2020-08-22 02:06:07,491 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:06:07,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 02:06:07,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740931969] [2020-08-22 02:06:07,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 02:06:07,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:07,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 02:06:07,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 02:06:07,492 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 6 states. [2020-08-22 02:06:07,906 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:09,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:09,462 INFO L93 Difference]: Finished difference Result 1441 states and 1939 transitions. [2020-08-22 02:06:09,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 02:06:09,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 02:06:09,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:09,475 INFO L225 Difference]: With dead ends: 1441 [2020-08-22 02:06:09,475 INFO L226 Difference]: Without dead ends: 885 [2020-08-22 02:06:09,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 02:06:09,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-22 02:06:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 822. [2020-08-22 02:06:09,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-22 02:06:09,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1040 transitions. [2020-08-22 02:06:09,638 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1040 transitions. Word has length 61 [2020-08-22 02:06:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:09,639 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 1040 transitions. [2020-08-22 02:06:09,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 02:06:09,639 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1040 transitions. [2020-08-22 02:06:09,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-22 02:06:09,643 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:09,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:09,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 02:06:09,644 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:09,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:09,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2005608044, now seen corresponding path program 1 times [2020-08-22 02:06:09,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:09,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570294912] [2020-08-22 02:06:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,927 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:09,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:09,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 02:06:10,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 02:06:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 02:06:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:06:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:06:10,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 02:06:10,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570294912] [2020-08-22 02:06:10,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:10,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:06:10,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785937800] [2020-08-22 02:06:10,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:06:10,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:10,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:06:10,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:06:10,075 INFO L87 Difference]: Start difference. First operand 822 states and 1040 transitions. Second operand 10 states. [2020-08-22 02:06:10,787 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 02:06:11,404 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:12,992 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:14,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:14,182 INFO L93 Difference]: Finished difference Result 1577 states and 2071 transitions. [2020-08-22 02:06:14,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:06:14,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-22 02:06:14,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:14,191 INFO L225 Difference]: With dead ends: 1577 [2020-08-22 02:06:14,192 INFO L226 Difference]: Without dead ends: 1008 [2020-08-22 02:06:14,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 02:06:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2020-08-22 02:06:14,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 929. [2020-08-22 02:06:14,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-22 02:06:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1152 transitions. [2020-08-22 02:06:14,394 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1152 transitions. Word has length 88 [2020-08-22 02:06:14,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:14,395 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1152 transitions. [2020-08-22 02:06:14,395 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:06:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1152 transitions. [2020-08-22 02:06:14,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-22 02:06:14,398 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:14,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:14,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 02:06:14,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:14,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:14,399 INFO L82 PathProgramCache]: Analyzing trace with hash -248690710, now seen corresponding path program 1 times [2020-08-22 02:06:14,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:14,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898690036] [2020-08-22 02:06:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,740 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:14,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:14,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:14,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:14,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 02:06:14,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-22 02:06:14,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-22 02:06:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:14,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-08-22 02:06:14,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 02:06:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:14,941 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 02:06:14,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898690036] [2020-08-22 02:06:14,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:14,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:06:14,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371433640] [2020-08-22 02:06:14,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:14,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:14,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:14,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:14,949 INFO L87 Difference]: Start difference. First operand 929 states and 1152 transitions. Second operand 12 states. [2020-08-22 02:06:15,535 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:15,762 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:15,992 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:16,616 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:16,884 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:17,127 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:18,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:18,178 INFO L93 Difference]: Finished difference Result 1933 states and 2512 transitions. [2020-08-22 02:06:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 02:06:18,178 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-08-22 02:06:18,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:18,187 INFO L225 Difference]: With dead ends: 1933 [2020-08-22 02:06:18,187 INFO L226 Difference]: Without dead ends: 1028 [2020-08-22 02:06:18,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 02:06:18,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2020-08-22 02:06:18,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 929. [2020-08-22 02:06:18,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 929 states. [2020-08-22 02:06:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 929 states to 929 states and 1148 transitions. [2020-08-22 02:06:18,429 INFO L78 Accepts]: Start accepts. Automaton has 929 states and 1148 transitions. Word has length 109 [2020-08-22 02:06:18,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:18,430 INFO L479 AbstractCegarLoop]: Abstraction has 929 states and 1148 transitions. [2020-08-22 02:06:18,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 929 states and 1148 transitions. [2020-08-22 02:06:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 02:06:18,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:18,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:18,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 02:06:18,434 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:18,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:18,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1276162578, now seen corresponding path program 1 times [2020-08-22 02:06:18,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:18,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950461555] [2020-08-22 02:06:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,693 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:18,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:18,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:18,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 02:06:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:18,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 02:06:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-22 02:06:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:06:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:06:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:06:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:06:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 02:06:18,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950461555] [2020-08-22 02:06:18,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:18,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 02:06:18,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350183277] [2020-08-22 02:06:18,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 02:06:18,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:18,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 02:06:18,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 02:06:18,852 INFO L87 Difference]: Start difference. First operand 929 states and 1148 transitions. Second operand 10 states. [2020-08-22 02:06:19,823 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:20,083 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 02:06:20,333 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:20,579 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:21,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:21,360 INFO L93 Difference]: Finished difference Result 1757 states and 2231 transitions. [2020-08-22 02:06:21,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 02:06:21,361 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 113 [2020-08-22 02:06:21,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:21,367 INFO L225 Difference]: With dead ends: 1757 [2020-08-22 02:06:21,367 INFO L226 Difference]: Without dead ends: 852 [2020-08-22 02:06:21,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:06:21,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2020-08-22 02:06:21,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 802. [2020-08-22 02:06:21,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 802 states. [2020-08-22 02:06:21,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 973 transitions. [2020-08-22 02:06:21,533 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 973 transitions. Word has length 113 [2020-08-22 02:06:21,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:21,533 INFO L479 AbstractCegarLoop]: Abstraction has 802 states and 973 transitions. [2020-08-22 02:06:21,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 02:06:21,534 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 973 transitions. [2020-08-22 02:06:21,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-08-22 02:06:21,537 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:21,537 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:21,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 02:06:21,538 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:21,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:21,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1129880655, now seen corresponding path program 1 times [2020-08-22 02:06:21,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:21,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139939836] [2020-08-22 02:06:21,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:21,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,890 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:21,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:06:21,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 02:06:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:21,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 02:06:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:22,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 02:06:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:22,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:22,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-22 02:06:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:22,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 02:06:22,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:22,051 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 02:06:22,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139939836] [2020-08-22 02:06:22,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:22,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 02:06:22,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214766890] [2020-08-22 02:06:22,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 02:06:22,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:22,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 02:06:22,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 02:06:22,054 INFO L87 Difference]: Start difference. First operand 802 states and 973 transitions. Second operand 12 states. [2020-08-22 02:06:22,724 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:23,804 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 02:06:24,063 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:24,278 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:24,513 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:24,755 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:25,095 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:25,611 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:25,899 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:26,130 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:27,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:27,664 INFO L93 Difference]: Finished difference Result 1952 states and 2520 transitions. [2020-08-22 02:06:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 02:06:27,665 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 113 [2020-08-22 02:06:27,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:27,673 INFO L225 Difference]: With dead ends: 1952 [2020-08-22 02:06:27,673 INFO L226 Difference]: Without dead ends: 1319 [2020-08-22 02:06:27,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 02:06:27,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-08-22 02:06:27,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1155. [2020-08-22 02:06:27,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1155 states. [2020-08-22 02:06:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1419 transitions. [2020-08-22 02:06:27,880 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1419 transitions. Word has length 113 [2020-08-22 02:06:27,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:27,882 INFO L479 AbstractCegarLoop]: Abstraction has 1155 states and 1419 transitions. [2020-08-22 02:06:27,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 02:06:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1419 transitions. [2020-08-22 02:06:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-08-22 02:06:27,887 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:27,888 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:06:27,888 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:06:27,888 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:27,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:27,888 INFO L82 PathProgramCache]: Analyzing trace with hash -2054287532, now seen corresponding path program 1 times [2020-08-22 02:06:27,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:27,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924169950] [2020-08-22 02:06:27,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:27,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,211 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:28,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:06:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 02:06:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:06:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:06:28,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:06:28,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 02:06:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-08-22 02:06:28,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 02:06:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:28,500 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 5 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-08-22 02:06:28,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924169950] [2020-08-22 02:06:28,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:28,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 02:06:28,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633610435] [2020-08-22 02:06:28,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 02:06:28,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:28,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 02:06:28,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 02:06:28,508 INFO L87 Difference]: Start difference. First operand 1155 states and 1419 transitions. Second operand 13 states. [2020-08-22 02:06:29,233 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:29,459 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:29,685 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 02:06:30,129 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:30,965 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:32,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:32,240 INFO L93 Difference]: Finished difference Result 1952 states and 2448 transitions. [2020-08-22 02:06:32,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 02:06:32,241 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 146 [2020-08-22 02:06:32,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:32,248 INFO L225 Difference]: With dead ends: 1952 [2020-08-22 02:06:32,249 INFO L226 Difference]: Without dead ends: 1017 [2020-08-22 02:06:32,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2020-08-22 02:06:32,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2020-08-22 02:06:32,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 739. [2020-08-22 02:06:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-08-22 02:06:32,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 854 transitions. [2020-08-22 02:06:32,428 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 854 transitions. Word has length 146 [2020-08-22 02:06:32,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:32,429 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 854 transitions. [2020-08-22 02:06:32,429 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 02:06:32,429 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 854 transitions. [2020-08-22 02:06:32,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-08-22 02:06:32,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:32,435 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 02:06:32,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:06:32,436 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash -793208668, now seen corresponding path program 2 times [2020-08-22 02:06:32,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:32,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360568046] [2020-08-22 02:06:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,805 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 02:06:32,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:06:32,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:32,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 02:06:32,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 02:06:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 02:06:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 02:06:32,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 02:06:32,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 02:06:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 02:06:32,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 02:06:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 02:06:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 02:06:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 02:06:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 02:06:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-08-22 02:06:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 02:06:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:32,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 02:06:32,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-08-22 02:06:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-08-22 02:06:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:06:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 37 proven. 18 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 02:06:33,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360568046] [2020-08-22 02:06:33,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 02:06:33,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 02:06:33,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639531415] [2020-08-22 02:06:33,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 02:06:33,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:06:33,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 02:06:33,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 02:06:33,045 INFO L87 Difference]: Start difference. First operand 739 states and 854 transitions. Second operand 14 states. [2020-08-22 02:06:33,836 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:34,456 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:34,964 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:35,230 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:35,473 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:35,731 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:36,032 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:36,277 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 02:06:37,538 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:06:37,801 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 02:06:38,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:06:38,896 INFO L93 Difference]: Finished difference Result 1618 states and 2050 transitions. [2020-08-22 02:06:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 02:06:38,896 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 152 [2020-08-22 02:06:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:06:38,903 INFO L225 Difference]: With dead ends: 1618 [2020-08-22 02:06:38,903 INFO L226 Difference]: Without dead ends: 1125 [2020-08-22 02:06:38,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 02:06:38,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-08-22 02:06:39,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 728. [2020-08-22 02:06:39,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-22 02:06:39,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 848 transitions. [2020-08-22 02:06:39,059 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 848 transitions. Word has length 152 [2020-08-22 02:06:39,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:06:39,061 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 848 transitions. [2020-08-22 02:06:39,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 02:06:39,061 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 848 transitions. [2020-08-22 02:06:39,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 02:06:39,064 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:06:39,064 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-08-22 02:06:39,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 02:06:39,065 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:06:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:06:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash -127576802, now seen corresponding path program 3 times [2020-08-22 02:06:39,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:06:39,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322183939] [2020-08-22 02:06:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:06:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:06:39,150 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:06:39,150 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:06:39,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 02:06:39,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:06:39 BoogieIcfgContainer [2020-08-22 02:06:39,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:06:39,200 INFO L168 Benchmark]: Toolchain (without parser) took 48200.44 ms. Allocated memory was 148.9 MB in the beginning and 727.2 MB in the end (delta: 578.3 MB). Free memory was 104.5 MB in the beginning and 558.3 MB in the end (delta: -453.8 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2020-08-22 02:06:39,200 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:06:39,201 INFO L168 Benchmark]: CACSL2BoogieTranslator took 624.20 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 104.3 MB in the beginning and 176.4 MB in the end (delta: -72.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:06:39,204 INFO L168 Benchmark]: Boogie Preprocessor took 100.37 ms. Allocated memory is still 206.6 MB. Free memory was 176.4 MB in the beginning and 172.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-08-22 02:06:39,210 INFO L168 Benchmark]: RCFGBuilder took 1143.54 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 172.1 MB in the beginning and 195.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. [2020-08-22 02:06:39,211 INFO L168 Benchmark]: TraceAbstraction took 46327.60 ms. Allocated memory was 234.4 MB in the beginning and 727.2 MB in the end (delta: 492.8 MB). Free memory was 195.7 MB in the beginning and 558.3 MB in the end (delta: -362.6 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:06:39,219 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 148.9 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 624.20 ms. Allocated memory was 148.9 MB in the beginning and 206.6 MB in the end (delta: 57.7 MB). Free memory was 104.3 MB in the beginning and 176.4 MB in the end (delta: -72.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.37 ms. Allocated memory is still 206.6 MB. Free memory was 176.4 MB in the beginning and 172.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1143.54 ms. Allocated memory was 206.6 MB in the beginning and 234.4 MB in the end (delta: 27.8 MB). Free memory was 172.1 MB in the beginning and 195.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 81.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46327.60 ms. Allocated memory was 234.4 MB in the beginning and 727.2 MB in the end (delta: 492.8 MB). Free memory was 195.7 MB in the beginning and 558.3 MB in the end (delta: -362.6 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L391] int retValue_acc ; [L392] int tmp ; [L396] FCALL select_helpers() [L397] FCALL select_features() [L398] CALL, EXPR valid_product() [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); [L398] RET, EXPR valid_product() [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) [L402] FCALL setup() [L403] CALL runTest() [L382] CALL test() [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) [L67] CALL waterRise() [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 [L67] RET waterRise() [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND FALSE !(\read(pumpRunning)) [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND TRUE ! pumpRunning [L189] CALL, EXPR isHighWaterLevel() [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L287] CALL, EXPR isHighWaterSensorDry() [L904] int retValue_acc ; [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); [L287] RET, EXPR isHighWaterSensorDry() [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); [L189] RET, EXPR isHighWaterLevel() [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L193] CALL activatePump() [L212] pumpRunning = 1 [L193] RET activatePump() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) [L170] RET __utac_acc__Specification4_spec__1() [L100] RET timeShift() [L55] COND TRUE 1 [L57] COND TRUE splverifierCounter < 4 [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) [L100] CALL timeShift() [L155] COND TRUE \read(pumpRunning) [L157] CALL lowerWaterLevel() [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 [L157] RET lowerWaterLevel() [L162] COND TRUE \read(systemActive) [L164] CALL processEnvironment() [L184] int tmp ; [L187] COND FALSE !(! pumpRunning) [L202] FCALL processEnvironment__wrappee__base() [L164] RET processEnvironment() [L170] CALL __utac_acc__Specification4_spec__1() [L116] int tmp ; [L117] int tmp___0 ; [L121] CALL, EXPR getWaterLevel() [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); [L121] RET, EXPR getWaterLevel() [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 [L125] CALL, EXPR isPumpRunning() [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); [L125] RET, EXPR isPumpRunning() [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) [L129] CALL __automaton_fail() [L784] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1298 SDtfs, 3324 SDslu, 1920 SDs, 0 SdLazy, 9002 SolverSat, 2429 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 543 GetRequests, 345 SyntacticMatches, 11 SemanticMatches, 187 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 868 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1155occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 1342 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 1131 NumberOfCodeBlocks, 1131 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 972 ConstructedInterpolants, 0 QuantifiedInterpolants, 366987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...