/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:45:54,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:45:54,785 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:45:54,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:45:54,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:45:54,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:45:54,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:45:54,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:45:54,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:45:54,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:45:54,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:45:54,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:45:54,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:45:54,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:45:54,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:45:54,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:45:54,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:45:54,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:45:54,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:45:54,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:45:54,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:45:54,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:45:54,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:45:54,836 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:45:54,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:45:54,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:45:54,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:45:54,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:45:54,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:45:54,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:45:54,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:45:54,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:45:54,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:45:54,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:45:54,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:45:54,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:45:54,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:45:54,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:45:54,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:45:54,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:45:54,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:45:54,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:45:54,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:45:54,875 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:45:54,876 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:45:54,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:45:54,876 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:45:54,877 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:45:54,877 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:45:54,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:45:54,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:45:54,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:45:54,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:45:54,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:45:54,878 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:45:54,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:45:54,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:45:54,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:45:54,879 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:45:54,879 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:45:54,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:45:54,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:45:54,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:45:54,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:45:54,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:45:54,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:45:54,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:45:54,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:45:54,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:45:54,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:45:54,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:45:54,881 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:45:55,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:45:55,177 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:45:55,180 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:45:55,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:45:55,185 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:45:55,186 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 05:45:55,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8401183/604eee2d33ee4b0097d332189395d860/FLAG2f697209c [2020-08-19 05:45:55,795 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:45:55,796 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product39.cil.c [2020-08-19 05:45:55,818 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8401183/604eee2d33ee4b0097d332189395d860/FLAG2f697209c [2020-08-19 05:45:56,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b8401183/604eee2d33ee4b0097d332189395d860 [2020-08-19 05:45:56,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:45:56,081 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:45:56,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:45:56,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:45:56,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:45:56,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51a556b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56, skipping insertion in model container [2020-08-19 05:45:56,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:45:56,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:45:56,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:45:56,505 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:45:56,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:45:56,723 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:45:56,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56 WrapperNode [2020-08-19 05:45:56,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:45:56,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:45:56,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:45:56,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:45:56,736 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,755 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... [2020-08-19 05:45:56,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:45:56,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:45:56,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:45:56,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:45:56,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:45:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:45:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:45:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:45:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:45:56,886 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:45:56,887 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:45:56,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:45:56,889 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:45:56,890 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:45:56,891 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:45:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:45:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:45:56,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:45:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:45:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:45:56,892 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:45:56,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:45:56,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:45:56,895 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:45:56,896 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:45:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:45:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:45:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:45:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:45:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:45:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:45:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:45:58,062 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:45:58,063 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:45:58,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:45:58 BoogieIcfgContainer [2020-08-19 05:45:58,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:45:58,078 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:45:58,078 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:45:58,082 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:45:58,082 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:45:56" (1/3) ... [2020-08-19 05:45:58,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:45:58, skipping insertion in model container [2020-08-19 05:45:58,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:45:56" (2/3) ... [2020-08-19 05:45:58,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5894df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:45:58, skipping insertion in model container [2020-08-19 05:45:58,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:45:58" (3/3) ... [2020-08-19 05:45:58,086 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product39.cil.c [2020-08-19 05:45:58,097 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:45:58,106 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:45:58,119 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:45:58,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:45:58,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:45:58,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:45:58,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:45:58,144 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:45:58,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:45:58,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:45:58,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:45:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states. [2020-08-19 05:45:58,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:45:58,178 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:45:58,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:45:58,179 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:45:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:45:58,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1081228888, now seen corresponding path program 1 times [2020-08-19 05:45:58,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:45:58,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103773393] [2020-08-19 05:45:58,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:45:58,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,868 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:45:58,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:45:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:45:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:45:58,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:45:58,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:45:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:45:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:45:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:45:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:45:59,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103773393] [2020-08-19 05:45:59,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:45:59,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:45:59,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280156706] [2020-08-19 05:45:59,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:45:59,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:45:59,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:45:59,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:45:59,054 INFO L87 Difference]: Start difference. First operand 172 states. Second operand 3 states. [2020-08-19 05:46:00,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:00,258 INFO L93 Difference]: Finished difference Result 301 states and 397 transitions. [2020-08-19 05:46:00,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:46:00,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 05:46:00,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:00,275 INFO L225 Difference]: With dead ends: 301 [2020-08-19 05:46:00,276 INFO L226 Difference]: Without dead ends: 163 [2020-08-19 05:46:00,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:46:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-19 05:46:00,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 129. [2020-08-19 05:46:00,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 05:46:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 153 transitions. [2020-08-19 05:46:00,374 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 153 transitions. Word has length 46 [2020-08-19 05:46:00,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:00,375 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 153 transitions. [2020-08-19 05:46:00,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:46:00,375 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 153 transitions. [2020-08-19 05:46:00,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 05:46:00,379 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:00,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:00,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:46:00,380 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:00,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:00,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1618039840, now seen corresponding path program 1 times [2020-08-19 05:46:00,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:00,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099283070] [2020-08-19 05:46:00,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:00,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,713 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:00,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:46:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:46:00,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:00,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:00,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099283070] [2020-08-19 05:46:00,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:00,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:46:00,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630135749] [2020-08-19 05:46:00,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:46:00,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:00,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:46:00,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:46:00,764 INFO L87 Difference]: Start difference. First operand 129 states and 153 transitions. Second operand 4 states. [2020-08-19 05:46:01,216 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:02,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:02,087 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2020-08-19 05:46:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:46:02,092 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 05:46:02,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:02,095 INFO L225 Difference]: With dead ends: 228 [2020-08-19 05:46:02,096 INFO L226 Difference]: Without dead ends: 147 [2020-08-19 05:46:02,097 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 [2020-08-19 05:46:02,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-08-19 05:46:02,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 120. [2020-08-19 05:46:02,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 05:46:02,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 141 transitions. [2020-08-19 05:46:02,137 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 141 transitions. Word has length 47 [2020-08-19 05:46:02,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:02,137 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 141 transitions. [2020-08-19 05:46:02,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:46:02,137 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 141 transitions. [2020-08-19 05:46:02,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:46:02,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:02,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:02,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:46:02,140 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:02,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:02,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1339561462, now seen corresponding path program 1 times [2020-08-19 05:46:02,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:02,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072560856] [2020-08-19 05:46:02,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,470 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:02,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:02,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:46:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:46:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:02,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072560856] [2020-08-19 05:46:02,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:02,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:46:02,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981235397] [2020-08-19 05:46:02,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:46:02,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:02,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:46:02,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:46:02,596 INFO L87 Difference]: Start difference. First operand 120 states and 141 transitions. Second operand 8 states. [2020-08-19 05:46:03,004 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:03,314 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:03,585 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:03,834 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:04,579 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:06,362 INFO L93 Difference]: Finished difference Result 412 states and 515 transitions. [2020-08-19 05:46:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:46:06,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 05:46:06,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:06,369 INFO L225 Difference]: With dead ends: 412 [2020-08-19 05:46:06,369 INFO L226 Difference]: Without dead ends: 316 [2020-08-19 05:46:06,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:46:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-08-19 05:46:06,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 258. [2020-08-19 05:46:06,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 258 states. [2020-08-19 05:46:06,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 314 transitions. [2020-08-19 05:46:06,438 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 314 transitions. Word has length 51 [2020-08-19 05:46:06,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:06,438 INFO L479 AbstractCegarLoop]: Abstraction has 258 states and 314 transitions. [2020-08-19 05:46:06,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:46:06,438 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 314 transitions. [2020-08-19 05:46:06,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:46:06,441 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:06,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:06,442 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:46:06,442 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:06,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:06,443 INFO L82 PathProgramCache]: Analyzing trace with hash 857479477, now seen corresponding path program 1 times [2020-08-19 05:46:06,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:06,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765651711] [2020-08-19 05:46:06,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:06,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,731 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:06,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:06,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:46:06,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:46:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:46:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:06,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:06,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765651711] [2020-08-19 05:46:06,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:06,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:46:06,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546735510] [2020-08-19 05:46:06,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:46:06,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:06,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:46:06,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:46:06,894 INFO L87 Difference]: Start difference. First operand 258 states and 314 transitions. Second operand 8 states. [2020-08-19 05:46:07,319 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:08,173 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:08,595 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:08,914 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:09,212 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:09,640 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:10,515 INFO L93 Difference]: Finished difference Result 832 states and 1087 transitions. [2020-08-19 05:46:10,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:46:10,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 05:46:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:10,523 INFO L225 Difference]: With dead ends: 832 [2020-08-19 05:46:10,523 INFO L226 Difference]: Without dead ends: 598 [2020-08-19 05:46:10,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:46:10,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2020-08-19 05:46:10,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 471. [2020-08-19 05:46:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2020-08-19 05:46:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 578 transitions. [2020-08-19 05:46:10,657 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 578 transitions. Word has length 57 [2020-08-19 05:46:10,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:10,658 INFO L479 AbstractCegarLoop]: Abstraction has 471 states and 578 transitions. [2020-08-19 05:46:10,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:46:10,658 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 578 transitions. [2020-08-19 05:46:10,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 05:46:10,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:10,662 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:10,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:46:10,662 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:10,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:10,663 INFO L82 PathProgramCache]: Analyzing trace with hash -690329863, now seen corresponding path program 1 times [2020-08-19 05:46:10,663 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:10,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16120658] [2020-08-19 05:46:10,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,005 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:11,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:11,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:11,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:46:11,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:46:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:46:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:46:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:11,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:11,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16120658] [2020-08-19 05:46:11,092 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:11,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:46:11,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240541930] [2020-08-19 05:46:11,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:46:11,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:11,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:46:11,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:46:11,094 INFO L87 Difference]: Start difference. First operand 471 states and 578 transitions. Second operand 9 states. [2020-08-19 05:46:11,474 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:12,393 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:12,684 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:12,928 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:46:13,483 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:13,756 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:14,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:14,786 INFO L93 Difference]: Finished difference Result 1331 states and 1800 transitions. [2020-08-19 05:46:14,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:46:14,787 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-08-19 05:46:14,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:14,797 INFO L225 Difference]: With dead ends: 1331 [2020-08-19 05:46:14,797 INFO L226 Difference]: Without dead ends: 884 [2020-08-19 05:46:14,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:46:14,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-08-19 05:46:14,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 703. [2020-08-19 05:46:14,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 703 states. [2020-08-19 05:46:14,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 871 transitions. [2020-08-19 05:46:14,983 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 871 transitions. Word has length 61 [2020-08-19 05:46:14,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:14,983 INFO L479 AbstractCegarLoop]: Abstraction has 703 states and 871 transitions. [2020-08-19 05:46:14,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:46:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 871 transitions. [2020-08-19 05:46:14,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:46:14,986 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:14,987 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:14,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:46:14,987 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1573489665, now seen corresponding path program 1 times [2020-08-19 05:46:14,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:14,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787371527] [2020-08-19 05:46:14,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,234 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:15,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:46:15,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:46:15,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:15,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:46:15,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:46:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:46:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:46:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:15,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787371527] [2020-08-19 05:46:15,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:15,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:46:15,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829172353] [2020-08-19 05:46:15,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:46:15,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:15,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:46:15,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:46:15,362 INFO L87 Difference]: Start difference. First operand 703 states and 871 transitions. Second operand 9 states. [2020-08-19 05:46:15,944 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:46:16,862 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:17,097 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:46:17,369 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:17,611 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:19,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:19,335 INFO L93 Difference]: Finished difference Result 2338 states and 3323 transitions. [2020-08-19 05:46:19,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:46:19,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 05:46:19,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:19,348 INFO L225 Difference]: With dead ends: 2338 [2020-08-19 05:46:19,348 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 05:46:19,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:46:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 05:46:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1259. [2020-08-19 05:46:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1259 states. [2020-08-19 05:46:19,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1546 transitions. [2020-08-19 05:46:19,619 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1546 transitions. Word has length 83 [2020-08-19 05:46:19,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:19,621 INFO L479 AbstractCegarLoop]: Abstraction has 1259 states and 1546 transitions. [2020-08-19 05:46:19,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:46:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1546 transitions. [2020-08-19 05:46:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:46:19,628 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:19,629 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:19,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:46:19,630 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash 547997666, now seen corresponding path program 1 times [2020-08-19 05:46:19,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:19,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771091027] [2020-08-19 05:46:19,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,914 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:19,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:46:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:46:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:19,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:20,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:46:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:46:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:46:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:46:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:20,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771091027] [2020-08-19 05:46:20,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:20,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 05:46:20,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843308879] [2020-08-19 05:46:20,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:46:20,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:20,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:46:20,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:46:20,086 INFO L87 Difference]: Start difference. First operand 1259 states and 1546 transitions. Second operand 9 states. [2020-08-19 05:46:21,225 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:21,482 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:46:21,776 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:22,037 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:23,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:23,128 INFO L93 Difference]: Finished difference Result 2894 states and 3849 transitions. [2020-08-19 05:46:23,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:46:23,129 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-08-19 05:46:23,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:23,146 INFO L225 Difference]: With dead ends: 2894 [2020-08-19 05:46:23,146 INFO L226 Difference]: Without dead ends: 1659 [2020-08-19 05:46:23,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:46:23,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-08-19 05:46:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1299. [2020-08-19 05:46:23,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-19 05:46:23,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1586 transitions. [2020-08-19 05:46:23,436 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1586 transitions. Word has length 83 [2020-08-19 05:46:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:23,437 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1586 transitions. [2020-08-19 05:46:23,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:46:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1586 transitions. [2020-08-19 05:46:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-19 05:46:23,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:23,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:23,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:46:23,441 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:23,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:23,441 INFO L82 PathProgramCache]: Analyzing trace with hash 570629920, now seen corresponding path program 1 times [2020-08-19 05:46:23,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:23,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776812004] [2020-08-19 05:46:23,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,729 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:46:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:46:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:46:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:46:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:46:23,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:46:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:46:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:46:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:23,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:46:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:46:23,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:46:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 05:46:23,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 05:46:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:46:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:46:23,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776812004] [2020-08-19 05:46:23,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:46:23,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 05:46:23,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991658188] [2020-08-19 05:46:23,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:46:23,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:46:23,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:46:23,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:46:23,856 INFO L87 Difference]: Start difference. First operand 1299 states and 1586 transitions. Second operand 11 states. [2020-08-19 05:46:24,491 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:24,732 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:24,960 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:25,675 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:25,932 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:26,169 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:46:27,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:46:27,400 INFO L93 Difference]: Finished difference Result 2592 states and 3413 transitions. [2020-08-19 05:46:27,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:46:27,401 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 83 [2020-08-19 05:46:27,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:46:27,410 INFO L225 Difference]: With dead ends: 2592 [2020-08-19 05:46:27,410 INFO L226 Difference]: Without dead ends: 1317 [2020-08-19 05:46:27,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:46:27,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1317 states. [2020-08-19 05:46:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1317 to 1073. [2020-08-19 05:46:27,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-08-19 05:46:27,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1282 transitions. [2020-08-19 05:46:27,700 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1282 transitions. Word has length 83 [2020-08-19 05:46:27,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:46:27,701 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1282 transitions. [2020-08-19 05:46:27,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:46:27,701 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1282 transitions. [2020-08-19 05:46:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-08-19 05:46:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:46:27,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:46:27,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:46:27,705 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:46:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:46:27,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1146127589, now seen corresponding path program 1 times [2020-08-19 05:46:27,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:46:27,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003587312] [2020-08-19 05:46:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:46:27,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:46:27,796 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:46:27,797 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:46:27,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:46:27,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:46:27 BoogieIcfgContainer [2020-08-19 05:46:27,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:46:27,846 INFO L168 Benchmark]: Toolchain (without parser) took 31765.46 ms. Allocated memory was 141.0 MB in the beginning and 684.2 MB in the end (delta: 543.2 MB). Free memory was 103.6 MB in the beginning and 541.1 MB in the end (delta: -437.6 MB). Peak memory consumption was 105.6 MB. Max. memory is 7.1 GB. [2020-08-19 05:46:27,847 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 05:46:27,851 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.47 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 171.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:46:27,859 INFO L168 Benchmark]: Boogie Preprocessor took 99.24 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:46:27,861 INFO L168 Benchmark]: RCFGBuilder took 1250.08 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 194.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-08-19 05:46:27,862 INFO L168 Benchmark]: TraceAbstraction took 29766.23 ms. Allocated memory was 236.5 MB in the beginning and 684.2 MB in the end (delta: 447.7 MB). Free memory was 194.6 MB in the beginning and 541.1 MB in the end (delta: -346.5 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. [2020-08-19 05:46:27,869 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.47 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.3 MB in the beginning and 171.8 MB in the end (delta: -68.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.24 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 167.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1250.08 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 167.4 MB in the beginning and 194.6 MB in the end (delta: -27.2 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29766.23 ms. Allocated memory was 236.5 MB in the beginning and 684.2 MB in the end (delta: 447.7 MB). Free memory was 194.6 MB in the beginning and 541.1 MB in the end (delta: -346.5 MB). Peak memory consumption was 101.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L450] int waterLevel = 1; [L451] int methaneLevelCritical = 0; [L617] int pumpRunning = 0; [L618] int systemActive = 1; [L848] int cleanupTimeShifts = 4; [L921] int retValue_acc ; [L922] int tmp ; [L926] FCALL select_helpers() [L927] FCALL select_features() [L928] CALL, EXPR valid_product() [L839] int retValue_acc ; [L842] retValue_acc = 1 [L843] return (retValue_acc); [L928] RET, EXPR valid_product() [L928] tmp = valid_product() [L930] COND TRUE \read(tmp) [L932] FCALL setup() [L933] CALL runTest() [L915] CALL test() [L548] int splverifierCounter ; [L549] int tmp ; [L550] int tmp___0 ; [L551] int tmp___1 ; [L552] int tmp___2 ; [L555] splverifierCounter = 0 [L557] COND TRUE 1 [L559] COND TRUE splverifierCounter < 4 [L565] tmp = __VERIFIER_nondet_int() [L567] COND TRUE \read(tmp) [L569] CALL waterRise() [L468] COND TRUE waterLevel < 2 [L469] waterLevel = waterLevel + 1 [L569] RET waterRise() [L575] tmp___0 = __VERIFIER_nondet_int() [L577] COND TRUE \read(tmp___0) [L579] CALL changeMethaneLevel() [L480] COND FALSE !(\read(methaneLevelCritical)) [L483] methaneLevelCritical = 1 [L579] RET changeMethaneLevel() [L585] tmp___2 = __VERIFIER_nondet_int() [L587] COND TRUE \read(tmp___2) [L602] CALL timeShift() [L624] COND FALSE !(\read(pumpRunning)) [L631] COND TRUE \read(systemActive) [L633] CALL processEnvironment() [L679] int tmp ; [L682] COND FALSE !(\read(pumpRunning)) [L697] CALL processEnvironment__wrappee__highWaterSensor() [L653] int tmp ; [L656] COND TRUE ! pumpRunning [L658] CALL, EXPR isHighWaterLevel() [L776] int retValue_acc ; [L777] int tmp ; [L778] int tmp___0 ; [L782] CALL, EXPR isHighWaterSensorDry() [L530] int retValue_acc ; [L533] COND FALSE !(waterLevel < 2) [L537] retValue_acc = 0 [L538] return (retValue_acc); [L782] RET, EXPR isHighWaterSensorDry() [L782] tmp = isHighWaterSensorDry() [L784] COND FALSE !(\read(tmp)) [L787] tmp___0 = 1 [L789] retValue_acc = tmp___0 [L790] return (retValue_acc); [L658] RET, EXPR isHighWaterLevel() [L658] tmp = isHighWaterLevel() [L660] COND TRUE \read(tmp) [L662] CALL activatePump() [L707] pumpRunning = 1 [L662] RET activatePump() [L697] RET processEnvironment__wrappee__highWaterSensor() [L633] RET processEnvironment() [L639] CALL __utac_acc__Specification1_spec__1() [L410] int tmp ; [L411] int tmp___0 ; [L415] CALL, EXPR isMethaneLevelCritical() [L489] int retValue_acc ; [L492] retValue_acc = methaneLevelCritical [L493] return (retValue_acc); [L415] RET, EXPR isMethaneLevelCritical() [L415] tmp = isMethaneLevelCritical() [L417] COND TRUE \read(tmp) [L419] CALL, EXPR isPumpRunning() [L731] int retValue_acc ; [L734] retValue_acc = pumpRunning [L735] return (retValue_acc); [L419] RET, EXPR isPumpRunning() [L419] tmp___0 = isPumpRunning() [L421] COND TRUE \read(tmp___0) [L423] CALL __automaton_fail() [L439] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 231 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 29.6s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 24.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 910 SDtfs, 1603 SDslu, 1187 SDs, 0 SdLazy, 5341 SolverSat, 1013 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 269 GetRequests, 179 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1299occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 1431 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 598 NumberOfCodeBlocks, 598 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 503 ConstructedInterpolants, 0 QuantifiedInterpolants, 147464 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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...