/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:20:09,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:20:09,741 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:20:09,763 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:20:09,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:20:09,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:20:09,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:20:09,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:20:09,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:20:09,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:20:09,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:20:09,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:20:09,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:20:09,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:20:09,774 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:20:09,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:20:09,776 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:20:09,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:20:09,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:20:09,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:20:09,782 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:20:09,783 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:20:09,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:20:09,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:20:09,787 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:20:09,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:20:09,788 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:20:09,788 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:20:09,789 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:20:09,790 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:20:09,790 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:20:09,790 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:20:09,791 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:20:09,792 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:20:09,793 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:20:09,793 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:20:09,794 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:20:09,794 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:20:09,794 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:20:09,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:20:09,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:20:09,797 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 05:20:09,818 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:20:09,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:20:09,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:20:09,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:20:09,820 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:20:09,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:20:09,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:20:09,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:20:09,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:20:09,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:20:09,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:20:09,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:20:09,821 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:20:09,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:20:09,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:20:09,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:20:09,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:20:09,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:20:09,822 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:20:09,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:20:09,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:20:09,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:09,823 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:20:09,823 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:20:09,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:20:09,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:20:09,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:20:09,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:20:09,824 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:20:09,825 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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:20:10,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:20:10,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:20:10,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:20:10,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:20:10,152 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:20:10,153 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-22 05:20:10,217 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d0e9550b/b9266cd559e740b89d9047531e5fad47/FLAGbaf2c05dc [2020-08-22 05:20:10,754 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:20:10,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-22 05:20:10,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d0e9550b/b9266cd559e740b89d9047531e5fad47/FLAGbaf2c05dc [2020-08-22 05:20:11,075 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d0e9550b/b9266cd559e740b89d9047531e5fad47 [2020-08-22 05:20:11,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:20:11,084 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:20:11,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:11,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:20:11,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:20:11,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73af11df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11, skipping insertion in model container [2020-08-22 05:20:11,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:20:11,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:20:11,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:11,610 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:20:11,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:20:11,732 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:20:11,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11 WrapperNode [2020-08-22 05:20:11,732 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:20:11,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:20:11,733 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:20:11,733 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:20:11,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,765 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,830 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (1/1) ... [2020-08-22 05:20:11,845 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:20:11,846 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:20:11,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:20:11,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:20:11,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (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 05:20:11,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:20:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:20:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:11,930 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:20:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:20:11,931 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:20:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:20:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:20:11,932 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:20:11,933 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:20:11,934 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:20:11,935 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:20:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:20:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:20:11,936 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:20:11,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:20:11,938 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:20:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:20:11,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:20:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:20:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:20:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:20:11,939 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:20:11,940 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:20:11,941 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:20:11,942 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:20:11,943 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:20:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:20:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:20:11,944 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:20:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:20:11,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:20:11,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:20:11,947 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:20:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:20:11,948 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:20:11,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:20:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:20:11,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:20:13,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:20:13,031 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:20:13,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:13 BoogieIcfgContainer [2020-08-22 05:20:13,037 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:20:13,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:20:13,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:20:13,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:20:13,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:20:11" (1/3) ... [2020-08-22 05:20:13,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481e779c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:13, skipping insertion in model container [2020-08-22 05:20:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:20:11" (2/3) ... [2020-08-22 05:20:13,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@481e779c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:20:13, skipping insertion in model container [2020-08-22 05:20:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:20:13" (3/3) ... [2020-08-22 05:20:13,045 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-08-22 05:20:13,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:20:13,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:20:13,080 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:20:13,106 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:20:13,106 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:20:13,106 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:20:13,107 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:20:13,107 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:20:13,107 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:20:13,107 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:20:13,107 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:20:13,130 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-22 05:20:13,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:20:13,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:13,141 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 05:20:13,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:13,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:13,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-08-22 05:20:13,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:13,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367036202] [2020-08-22 05:20:13,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,798 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:13,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:13,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:13,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:20:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:13,896 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 05:20:13,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367036202] [2020-08-22 05:20:13,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:13,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:20:13,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204426962] [2020-08-22 05:20:13,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:20:13,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:13,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:20:13,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:20:13,925 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-08-22 05:20:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:15,030 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-22 05:20:15,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:20:15,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:20:15,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:15,047 INFO L225 Difference]: With dead ends: 278 [2020-08-22 05:20:15,047 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 05:20:15,053 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 05:20:15,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 05:20:15,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-22 05:20:15,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-22 05:20:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-22 05:20:15,149 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-22 05:20:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:15,150 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-22 05:20:15,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:20:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-22 05:20:15,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:20:15,154 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:15,154 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] [2020-08-22 05:20:15,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:20:15,154 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:15,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:15,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-08-22 05:20:15,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:15,155 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [434748242] [2020-08-22 05:20:15,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,512 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:15,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:15,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:20:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:15,591 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 05:20:15,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [434748242] [2020-08-22 05:20:15,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:15,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:20:15,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362409064] [2020-08-22 05:20:15,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:20:15,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:15,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:20:15,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:20:15,599 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-22 05:20:16,020 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:16,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:16,677 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-22 05:20:16,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:20:16,678 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:20:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:16,681 INFO L225 Difference]: With dead ends: 198 [2020-08-22 05:20:16,681 INFO L226 Difference]: Without dead ends: 135 [2020-08-22 05:20:16,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:20:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-22 05:20:16,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-22 05:20:16,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 05:20:16,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-22 05:20:16,714 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-22 05:20:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:16,714 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-22 05:20:16,714 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:20:16,715 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-22 05:20:16,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:20:16,717 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:16,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:16,717 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:20:16,717 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:16,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:16,718 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-08-22 05:20:16,718 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:16,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331255311] [2020-08-22 05:20:16,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,025 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:17,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:17,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:17,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:20:17,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:20:17,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:17,182 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 05:20:17,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331255311] [2020-08-22 05:20:17,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:17,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 05:20:17,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341975993] [2020-08-22 05:20:17,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 05:20:17,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 05:20:17,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 05:20:17,189 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-22 05:20:17,560 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:17,861 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:18,104 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:18,321 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:19,095 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:20,580 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-22 05:20:20,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:20,583 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 05:20:20,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:20,590 INFO L225 Difference]: With dead ends: 378 [2020-08-22 05:20:20,591 INFO L226 Difference]: Without dead ends: 293 [2020-08-22 05:20:20,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:20:20,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-22 05:20:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-22 05:20:20,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-22 05:20:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-22 05:20:20,660 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-22 05:20:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:20,661 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-22 05:20:20,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 05:20:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-22 05:20:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:20:20,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:20,663 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 05:20:20,664 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:20:20,664 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:20,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:20,664 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-08-22 05:20:20,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:20,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613209642] [2020-08-22 05:20:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:20,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,019 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:21,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:20:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:20:21,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:21,129 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 05:20:21,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613209642] [2020-08-22 05:20:21,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:21,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:20:21,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25372333] [2020-08-22 05:20:21,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:21,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:21,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:21,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:21,132 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 12 states. [2020-08-22 05:20:21,620 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:21,928 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:22,188 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:22,434 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:23,019 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:23,803 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:24,178 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:24,490 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:24,811 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:25,082 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:25,466 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:25,747 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:26,000 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:27,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:27,534 INFO L93 Difference]: Finished difference Result 881 states and 1222 transitions. [2020-08-22 05:20:27,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:20:27,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 05:20:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:27,549 INFO L225 Difference]: With dead ends: 881 [2020-08-22 05:20:27,549 INFO L226 Difference]: Without dead ends: 685 [2020-08-22 05:20:27,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:20:27,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-22 05:20:27,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 592. [2020-08-22 05:20:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-22 05:20:27,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 744 transitions. [2020-08-22 05:20:27,769 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 744 transitions. Word has length 57 [2020-08-22 05:20:27,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:27,770 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 744 transitions. [2020-08-22 05:20:27,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 744 transitions. [2020-08-22 05:20:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:20:27,774 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:27,774 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 05:20:27,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:20:27,774 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:27,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-08-22 05:20:27,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:27,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091133821] [2020-08-22 05:20:27,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,044 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:28,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:20:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:20:28,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:20:28,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:28,115 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 05:20:28,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091133821] [2020-08-22 05:20:28,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:20:28,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:20:28,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918354576] [2020-08-22 05:20:28,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:20:28,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:28,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:20:28,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:20:28,117 INFO L87 Difference]: Start difference. First operand 592 states and 744 transitions. Second operand 6 states. [2020-08-22 05:20:28,468 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:30,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:30,088 INFO L93 Difference]: Finished difference Result 1481 states and 1983 transitions. [2020-08-22 05:20:30,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:20:30,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:20:30,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:30,095 INFO L225 Difference]: With dead ends: 1481 [2020-08-22 05:20:30,095 INFO L226 Difference]: Without dead ends: 913 [2020-08-22 05:20:30,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:20:30,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-22 05:20:30,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 846. [2020-08-22 05:20:30,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-22 05:20:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1064 transitions. [2020-08-22 05:20:30,300 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1064 transitions. Word has length 61 [2020-08-22 05:20:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:30,301 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1064 transitions. [2020-08-22 05:20:30,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:20:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1064 transitions. [2020-08-22 05:20:30,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 05:20:30,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:30,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:30,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:20:30,307 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:30,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:30,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1637256011, now seen corresponding path program 1 times [2020-08-22 05:20:30,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:30,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743228742] [2020-08-22 05:20:30,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:30,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,615 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:30,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:30,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:30,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:20:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:30,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:30,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:20:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:20:30,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:20:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:30,780 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 05:20:30,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743228742] [2020-08-22 05:20:30,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:30,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:30,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012934472] [2020-08-22 05:20:30,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:30,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:30,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:30,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:30,785 INFO L87 Difference]: Start difference. First operand 846 states and 1064 transitions. Second operand 10 states. [2020-08-22 05:20:31,444 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 05:20:32,025 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:33,851 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:35,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:35,249 INFO L93 Difference]: Finished difference Result 1633 states and 2139 transitions. [2020-08-22 05:20:35,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:20:35,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 05:20:35,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:35,257 INFO L225 Difference]: With dead ends: 1633 [2020-08-22 05:20:35,257 INFO L226 Difference]: Without dead ends: 1048 [2020-08-22 05:20:35,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-22 05:20:35,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-22 05:20:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 953. [2020-08-22 05:20:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 05:20:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-08-22 05:20:35,457 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 89 [2020-08-22 05:20:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:35,458 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-08-22 05:20:35,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:20:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-08-22 05:20:35,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 05:20:35,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:35,462 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, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:35,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:20:35,463 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:35,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:35,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1243870907, now seen corresponding path program 1 times [2020-08-22 05:20:35,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:35,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344766108] [2020-08-22 05:20:35,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:35,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,739 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:35,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 05:20:35,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:20:35,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 05:20:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:20:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:20:35,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 05:20:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:35,918 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344766108] [2020-08-22 05:20:35,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:35,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:20:35,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367877377] [2020-08-22 05:20:35,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:35,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:35,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:35,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:35,922 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 12 states. [2020-08-22 05:20:36,682 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:36,909 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:37,124 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:37,751 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:37,992 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:38,232 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:39,207 INFO L93 Difference]: Finished difference Result 1984 states and 2566 transitions. [2020-08-22 05:20:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:20:39,208 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-22 05:20:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:39,218 INFO L225 Difference]: With dead ends: 1984 [2020-08-22 05:20:39,218 INFO L226 Difference]: Without dead ends: 1055 [2020-08-22 05:20:39,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:20:39,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-22 05:20:39,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 953. [2020-08-22 05:20:39,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-22 05:20:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1172 transitions. [2020-08-22 05:20:39,438 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1172 transitions. Word has length 115 [2020-08-22 05:20:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:39,439 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1172 transitions. [2020-08-22 05:20:39,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1172 transitions. [2020-08-22 05:20:39,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 05:20:39,442 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:39,442 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, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:39,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:20:39,442 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:39,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash 289930749, now seen corresponding path program 1 times [2020-08-22 05:20:39,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:39,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740313934] [2020-08-22 05:20:39,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,716 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:39,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:39,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:20:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:39,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:39,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 05:20:39,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:20:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 05:20:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:20:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:20:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 05:20:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:39,874 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:20:39,874 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740313934] [2020-08-22 05:20:39,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:39,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:20:39,875 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5140744] [2020-08-22 05:20:39,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:20:39,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:39,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:20:39,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:20:39,876 INFO L87 Difference]: Start difference. First operand 953 states and 1172 transitions. Second operand 10 states. [2020-08-22 05:20:40,862 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:41,115 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:20:41,362 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:41,603 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:42,253 INFO L93 Difference]: Finished difference Result 1803 states and 2279 transitions. [2020-08-22 05:20:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:20:42,254 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-08-22 05:20:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:42,259 INFO L225 Difference]: With dead ends: 1803 [2020-08-22 05:20:42,260 INFO L226 Difference]: Without dead ends: 874 [2020-08-22 05:20:42,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:20:42,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-08-22 05:20:42,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 822. [2020-08-22 05:20:42,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-22 05:20:42,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 993 transitions. [2020-08-22 05:20:42,433 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 993 transitions. Word has length 115 [2020-08-22 05:20:42,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:42,433 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 993 transitions. [2020-08-22 05:20:42,433 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:20:42,434 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 993 transitions. [2020-08-22 05:20:42,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-22 05:20:42,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:42,437 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, 1, 1, 1, 1, 1, 1] [2020-08-22 05:20:42,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:20:42,438 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:42,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-08-22 05:20:42,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:42,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433166543] [2020-08-22 05:20:42,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:42,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,746 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:42,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:42,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:42,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:42,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 05:20:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-22 05:20:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:20:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 05:20:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 05:20:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:42,928 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-22 05:20:42,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433166543] [2020-08-22 05:20:42,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:42,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:20:42,929 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205717949] [2020-08-22 05:20:42,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:20:42,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:42,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:20:42,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:20:42,930 INFO L87 Difference]: Start difference. First operand 822 states and 993 transitions. Second operand 12 states. [2020-08-22 05:20:43,534 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:44,376 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:20:44,662 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:44,897 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:45,117 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:45,335 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:45,672 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:46,248 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:46,504 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:46,755 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:48,176 INFO L93 Difference]: Finished difference Result 2004 states and 2576 transitions. [2020-08-22 05:20:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:20:48,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-22 05:20:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:48,185 INFO L225 Difference]: With dead ends: 2004 [2020-08-22 05:20:48,185 INFO L226 Difference]: Without dead ends: 1355 [2020-08-22 05:20:48,188 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-22 05:20:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-08-22 05:20:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1183. [2020-08-22 05:20:48,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-08-22 05:20:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2020-08-22 05:20:48,502 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 115 [2020-08-22 05:20:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:48,502 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2020-08-22 05:20:48,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:20:48,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2020-08-22 05:20:48,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-22 05:20:48,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:48,509 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:20:48,510 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:20:48,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:48,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:48,510 INFO L82 PathProgramCache]: Analyzing trace with hash -182454868, now seen corresponding path program 1 times [2020-08-22 05:20:48,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:48,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958070568] [2020-08-22 05:20:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,836 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:48,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 05:20:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:20:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:20:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 05:20:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 05:20:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-22 05:20:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:48,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-22 05:20:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:49,027 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-22 05:20:49,031 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958070568] [2020-08-22 05:20:49,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:49,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:20:49,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608496596] [2020-08-22 05:20:49,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:20:49,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:49,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:20:49,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:20:49,033 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand 13 states. [2020-08-22 05:20:49,579 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:49,817 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:50,050 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:20:50,528 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:51,456 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:52,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:52,870 INFO L93 Difference]: Finished difference Result 2158 states and 2710 transitions. [2020-08-22 05:20:52,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-22 05:20:52,870 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 148 [2020-08-22 05:20:52,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:52,878 INFO L225 Difference]: With dead ends: 2158 [2020-08-22 05:20:52,878 INFO L226 Difference]: Without dead ends: 1199 [2020-08-22 05:20:52,882 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-22 05:20:52,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-22 05:20:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 877. [2020-08-22 05:20:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-08-22 05:20:53,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1022 transitions. [2020-08-22 05:20:53,049 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1022 transitions. Word has length 148 [2020-08-22 05:20:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:53,049 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1022 transitions. [2020-08-22 05:20:53,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-22 05:20:53,050 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1022 transitions. [2020-08-22 05:20:53,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-22 05:20:53,053 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:53,053 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, 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 05:20:53,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:20:53,054 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:53,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:53,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1037640305, now seen corresponding path program 2 times [2020-08-22 05:20:53,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:53,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1830742516] [2020-08-22 05:20:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,439 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:20:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:20:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:20:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:20:53,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:20:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:20:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:20:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:53,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:20:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 05:20:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-22 05:20:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:20:53,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 05:20:53,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:20:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 05:20:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 05:20:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 05:20:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:20:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 05:20:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-22 05:20:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:20:53,729 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-22 05:20:53,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1830742516] [2020-08-22 05:20:53,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:20:53,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 05:20:53,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372294001] [2020-08-22 05:20:53,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 05:20:53,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:20:53,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 05:20:53,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-22 05:20:53,733 INFO L87 Difference]: Start difference. First operand 877 states and 1022 transitions. Second operand 14 states. [2020-08-22 05:20:54,220 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:54,824 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:55,389 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:55,687 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:55,949 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:56,231 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:56,552 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:56,814 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:20:58,162 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:20:58,419 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:20:59,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:20:59,404 INFO L93 Difference]: Finished difference Result 2124 states and 2708 transitions. [2020-08-22 05:20:59,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 05:20:59,405 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-22 05:20:59,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:20:59,413 INFO L225 Difference]: With dead ends: 2124 [2020-08-22 05:20:59,413 INFO L226 Difference]: Without dead ends: 1420 [2020-08-22 05:20:59,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-22 05:20:59,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-08-22 05:20:59,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 870. [2020-08-22 05:20:59,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-08-22 05:20:59,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1022 transitions. [2020-08-22 05:20:59,592 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1022 transitions. Word has length 155 [2020-08-22 05:20:59,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:20:59,593 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1022 transitions. [2020-08-22 05:20:59,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 05:20:59,593 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1022 transitions. [2020-08-22 05:20:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-22 05:20:59,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:20:59,596 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, 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 05:20:59,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:20:59,596 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:20:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:20:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 3 times [2020-08-22 05:20:59,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:20:59,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127238416] [2020-08-22 05:20:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:20:59,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 05:20:59,653 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 05:20:59,653 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 05:20:59,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:20:59,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:20:59 BoogieIcfgContainer [2020-08-22 05:20:59,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:20:59,698 INFO L168 Benchmark]: Toolchain (without parser) took 48613.61 ms. Allocated memory was 136.8 MB in the beginning and 793.2 MB in the end (delta: 656.4 MB). Free memory was 97.7 MB in the beginning and 484.4 MB in the end (delta: -386.7 MB). Peak memory consumption was 269.7 MB. Max. memory is 7.1 GB. [2020-08-22 05:20:59,698 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:20:59,699 INFO L168 Benchmark]: CACSL2BoogieTranslator took 647.73 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 97.5 MB in the beginning and 167.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:20:59,700 INFO L168 Benchmark]: Boogie Preprocessor took 112.44 ms. Allocated memory is still 199.8 MB. Free memory was 167.7 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:20:59,700 INFO L168 Benchmark]: RCFGBuilder took 1190.77 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 163.4 MB in the beginning and 195.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. [2020-08-22 05:20:59,701 INFO L168 Benchmark]: TraceAbstraction took 46657.96 ms. Allocated memory was 228.1 MB in the beginning and 793.2 MB in the end (delta: 565.2 MB). Free memory was 194.4 MB in the beginning and 484.4 MB in the end (delta: -290.0 MB). Peak memory consumption was 275.2 MB. Max. memory is 7.1 GB. [2020-08-22 05:20:59,704 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.8 MB. Free memory was 117.1 MB in the beginning and 116.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 647.73 ms. Allocated memory was 136.8 MB in the beginning and 199.8 MB in the end (delta: 62.9 MB). Free memory was 97.5 MB in the beginning and 167.7 MB in the end (delta: -70.2 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.44 ms. Allocated memory is still 199.8 MB. Free memory was 167.7 MB in the beginning and 163.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1190.77 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 163.4 MB in the beginning and 195.8 MB in the end (delta: -32.4 MB). Peak memory consumption was 88.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46657.96 ms. Allocated memory was 228.1 MB in the beginning and 793.2 MB in the end (delta: 565.2 MB). Free memory was 194.4 MB in the beginning and 484.4 MB in the end (delta: -290.0 MB). Peak memory consumption was 275.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1363 SDtfs, 3563 SDslu, 1919 SDs, 0 SdLazy, 9428 SolverSat, 2709 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 17.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred 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: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1585 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 375157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 224/262 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...