/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:21:41,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:21:41,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:21:41,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:21:41,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:21:41,785 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:21:41,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:21:41,790 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:21:41,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:21:41,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:21:41,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:21:41,799 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:21:41,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:21:41,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:21:41,804 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:21:41,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:21:41,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:21:41,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:21:41,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:21:41,819 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:21:41,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:21:41,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:21:41,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:21:41,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:21:41,827 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:21:41,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:21:41,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:21:41,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:21:41,828 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:21:41,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:21:41,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:21:41,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:21:41,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:21:41,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:21:41,832 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:21:41,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:21:41,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:21:41,833 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:21:41,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:21:41,834 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:21:41,835 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:21:41,836 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 [2020-08-21 16:21:41,857 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:21:41,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:21:41,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:21:41,859 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:21:41,859 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:21:41,859 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:21:41,859 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:21:41,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:21:41,861 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:21:41,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:21:41,861 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:21:41,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:21:41,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:21:41,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:21:41,862 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:21:41,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:21:41,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:21:41,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:21:41,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:21:41,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:21:41,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:21:41,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:21:41,864 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:21:41,864 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:21:41,864 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:21:42,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:21:42,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:21:42,177 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:21:42,179 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:21:42,180 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:21:42,180 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-08-21 16:21:42,256 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ecfc639b/2c767cc733a24b4d818d40597291f507/FLAGd6177e667 [2020-08-21 16:21:42,782 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:21:42,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product11.cil.c [2020-08-21 16:21:42,794 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ecfc639b/2c767cc733a24b4d818d40597291f507/FLAGd6177e667 [2020-08-21 16:21:43,072 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0ecfc639b/2c767cc733a24b4d818d40597291f507 [2020-08-21 16:21:43,081 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:21:43,082 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:21:43,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:21:43,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:21:43,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:21:43,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366b14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43, skipping insertion in model container [2020-08-21 16:21:43,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:21:43,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:21:43,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:21:43,475 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:21:43,711 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:21:43,743 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:21:43,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43 WrapperNode [2020-08-21 16:21:43,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:21:43,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:21:43,745 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:21:43,745 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:21:43,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,757 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,777 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,777 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,820 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... [2020-08-21 16:21:43,832 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:21:43,833 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:21:43,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:21:43,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:21:43,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:21:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:21:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:21:43,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 16:21:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:21:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 16:21:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 16:21:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 16:21:43,910 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 16:21:43,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 16:21:43,912 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 16:21:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 16:21:43,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 16:21:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 16:21:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 16:21:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 16:21:43,914 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 16:21:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-21 16:21:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 16:21:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 16:21:43,915 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 16:21:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 16:21:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 16:21:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 16:21:43,916 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 16:21:43,917 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 16:21:43,918 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 16:21:43,919 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 16:21:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 16:21:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 16:21:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 16:21:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 16:21:43,920 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 16:21:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 16:21:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 16:21:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:21:43,921 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 16:21:43,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 16:21:43,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:21:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 16:21:43,924 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 16:21:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:21:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 16:21:43,925 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 16:21:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 16:21:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 16:21:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 16:21:43,926 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 16:21:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 16:21:43,927 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-21 16:21:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 16:21:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:21:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 16:21:43,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:21:45,004 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:21:45,005 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 16:21:45,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:21:45 BoogieIcfgContainer [2020-08-21 16:21:45,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:21:45,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:21:45,011 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:21:45,014 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:21:45,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:21:43" (1/3) ... [2020-08-21 16:21:45,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:21:45, skipping insertion in model container [2020-08-21 16:21:45,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:21:43" (2/3) ... [2020-08-21 16:21:45,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@349d866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:21:45, skipping insertion in model container [2020-08-21 16:21:45,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:21:45" (3/3) ... [2020-08-21 16:21:45,018 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product11.cil.c [2020-08-21 16:21:45,029 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:21:45,037 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:21:45,051 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:21:45,073 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:21:45,073 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:21:45,073 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:21:45,074 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:21:45,074 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:21:45,074 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:21:45,075 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:21:45,075 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:21:45,098 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-08-21 16:21:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 16:21:45,108 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:45,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 16:21:45,110 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:45,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:45,116 INFO L82 PathProgramCache]: Analyzing trace with hash 789577792, now seen corresponding path program 1 times [2020-08-21 16:21:45,123 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:45,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [764263688] [2020-08-21 16:21:45,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:45,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,788 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:21:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:45,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 16:21:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 16:21:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:21:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:45,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:21:45,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [764263688] [2020-08-21 16:21:45,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:21:45,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 16:21:45,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763556086] [2020-08-21 16:21:45,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 16:21:45,890 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:45,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 16:21:45,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:21:45,909 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-08-21 16:21:46,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:46,863 INFO L93 Difference]: Finished difference Result 231 states and 307 transitions. [2020-08-21 16:21:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 16:21:46,865 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-21 16:21:46,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:46,880 INFO L225 Difference]: With dead ends: 231 [2020-08-21 16:21:46,880 INFO L226 Difference]: Without dead ends: 126 [2020-08-21 16:21:46,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 16:21:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-08-21 16:21:46,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2020-08-21 16:21:46,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-21 16:21:46,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-21 16:21:46,969 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 52 [2020-08-21 16:21:46,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:46,970 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-21 16:21:46,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 16:21:46,970 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-21 16:21:46,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-21 16:21:46,974 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:46,974 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] [2020-08-21 16:21:46,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:21:46,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:46,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash 86425602, now seen corresponding path program 1 times [2020-08-21 16:21:46,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:46,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437066836] [2020-08-21 16:21:46,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,306 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:21:47,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:47,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 16:21:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:21:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 16:21:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:21:47,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437066836] [2020-08-21 16:21:47,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:21:47,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 16:21:47,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849547953] [2020-08-21 16:21:47,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 16:21:47,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:47,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 16:21:47,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 16:21:47,386 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 4 states. [2020-08-21 16:21:47,797 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:21:48,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:48,414 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2020-08-21 16:21:48,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 16:21:48,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-21 16:21:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:48,418 INFO L225 Difference]: With dead ends: 155 [2020-08-21 16:21:48,418 INFO L226 Difference]: Without dead ends: 110 [2020-08-21 16:21:48,420 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:21:48,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-21 16:21:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 87. [2020-08-21 16:21:48,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-08-21 16:21:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2020-08-21 16:21:48,453 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 53 [2020-08-21 16:21:48,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:48,454 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2020-08-21 16:21:48,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 16:21:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2020-08-21 16:21:48,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-21 16:21:48,456 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:48,457 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] [2020-08-21 16:21:48,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 16:21:48,457 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:48,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:48,458 INFO L82 PathProgramCache]: Analyzing trace with hash -1920799428, now seen corresponding path program 1 times [2020-08-21 16:21:48,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:48,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579329216] [2020-08-21 16:21:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,819 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:21:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:48,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 16:21:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 16:21:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 16:21:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:21:48,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579329216] [2020-08-21 16:21:48,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:21:48,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 16:21:48,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341378516] [2020-08-21 16:21:48,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 16:21:48,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:48,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 16:21:48,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 16:21:48,935 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 8 states. [2020-08-21 16:21:49,314 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:21:49,635 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:49,891 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:50,139 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:50,842 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 16:21:51,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:51,917 INFO L93 Difference]: Finished difference Result 311 states and 384 transitions. [2020-08-21 16:21:51,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 16:21:51,917 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-21 16:21:51,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:51,922 INFO L225 Difference]: With dead ends: 311 [2020-08-21 16:21:51,922 INFO L226 Difference]: Without dead ends: 248 [2020-08-21 16:21:51,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-21 16:21:51,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-21 16:21:51,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 186. [2020-08-21 16:21:51,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-21 16:21:51,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 221 transitions. [2020-08-21 16:21:51,979 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 221 transitions. Word has length 57 [2020-08-21 16:21:51,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:51,979 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 221 transitions. [2020-08-21 16:21:51,979 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 16:21:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 221 transitions. [2020-08-21 16:21:51,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 16:21:51,982 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:51,982 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] [2020-08-21 16:21:51,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 16:21:51,983 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:51,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1032165772, now seen corresponding path program 1 times [2020-08-21 16:21:51,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:51,984 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492014252] [2020-08-21 16:21:51,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,281 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:21:52,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 16:21:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 16:21:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-21 16:21:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-21 16:21:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:52,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:21:52,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492014252] [2020-08-21 16:21:52,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:21:52,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 16:21:52,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147133885] [2020-08-21 16:21:52,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 16:21:52,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:52,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 16:21:52,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:21:52,394 INFO L87 Difference]: Start difference. First operand 186 states and 221 transitions. Second operand 7 states. [2020-08-21 16:21:52,771 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:21:53,758 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:54,033 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:54,272 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 16:21:54,516 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:21:54,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:54,828 INFO L93 Difference]: Finished difference Result 524 states and 668 transitions. [2020-08-21 16:21:54,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-21 16:21:54,829 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 60 [2020-08-21 16:21:54,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:54,833 INFO L225 Difference]: With dead ends: 524 [2020-08-21 16:21:54,833 INFO L226 Difference]: Without dead ends: 362 [2020-08-21 16:21:54,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-21 16:21:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-08-21 16:21:54,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 341. [2020-08-21 16:21:54,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-08-21 16:21:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 417 transitions. [2020-08-21 16:21:54,915 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 417 transitions. Word has length 60 [2020-08-21 16:21:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:54,916 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 417 transitions. [2020-08-21 16:21:54,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 16:21:54,916 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 417 transitions. [2020-08-21 16:21:54,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:21:54,919 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:54,920 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] [2020-08-21 16:21:54,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 16:21:54,920 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:54,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:54,920 INFO L82 PathProgramCache]: Analyzing trace with hash 2086246822, now seen corresponding path program 1 times [2020-08-21 16:21:54,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:54,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146811195] [2020-08-21 16:21:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,202 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 16:21:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 16:21:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 16:21:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 16:21:55,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 16:21:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 16:21:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 16:21:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 16:21:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 16:21:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 16:21:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 16:21:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:21:55,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 16:21:55,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146811195] [2020-08-21 16:21:55,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:21:55,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 16:21:55,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112631827] [2020-08-21 16:21:55,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 16:21:55,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 16:21:55,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 16:21:55,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 16:21:55,320 INFO L87 Difference]: Start difference. First operand 341 states and 417 transitions. Second operand 5 states. [2020-08-21 16:21:55,614 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 16:21:56,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 16:21:56,155 INFO L93 Difference]: Finished difference Result 586 states and 736 transitions. [2020-08-21 16:21:56,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 16:21:56,156 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-08-21 16:21:56,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 16:21:56,158 INFO L225 Difference]: With dead ends: 586 [2020-08-21 16:21:56,159 INFO L226 Difference]: Without dead ends: 308 [2020-08-21 16:21:56,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 16:21:56,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-08-21 16:21:56,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 295. [2020-08-21 16:21:56,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-21 16:21:56,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 346 transitions. [2020-08-21 16:21:56,222 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 346 transitions. Word has length 64 [2020-08-21 16:21:56,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 16:21:56,222 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 346 transitions. [2020-08-21 16:21:56,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 16:21:56,223 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 346 transitions. [2020-08-21 16:21:56,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 16:21:56,225 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:21:56,225 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] [2020-08-21 16:21:56,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 16:21:56,225 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:21:56,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:21:56,226 INFO L82 PathProgramCache]: Analyzing trace with hash -68424058, now seen corresponding path program 1 times [2020-08-21 16:21:56,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:21:56,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850267476] [2020-08-21 16:21:56,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:21:56,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 16:21:56,288 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 16:21:56,288 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:21:56,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 16:21:56,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:21:56 BoogieIcfgContainer [2020-08-21 16:21:56,316 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:21:56,318 INFO L168 Benchmark]: Toolchain (without parser) took 13235.39 ms. Allocated memory was 140.5 MB in the beginning and 463.5 MB in the end (delta: 323.0 MB). Free memory was 101.4 MB in the beginning and 345.6 MB in the end (delta: -244.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,319 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 660.55 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 174.8 MB in the end (delta: -73.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,321 INFO L168 Benchmark]: Boogie Preprocessor took 87.82 ms. Allocated memory is still 203.9 MB. Free memory was 174.8 MB in the beginning and 170.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,322 INFO L168 Benchmark]: RCFGBuilder took 1177.52 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.1 MB in the beginning and 202.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,323 INFO L168 Benchmark]: TraceAbstraction took 11304.82 ms. Allocated memory was 237.0 MB in the beginning and 463.5 MB in the end (delta: 226.5 MB). Free memory was 202.2 MB in the beginning and 345.6 MB in the end (delta: -143.4 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:21:56,327 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 660.55 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.2 MB in the beginning and 174.8 MB in the end (delta: -73.6 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.82 ms. Allocated memory is still 203.9 MB. Free memory was 174.8 MB in the beginning and 170.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1177.52 ms. Allocated memory was 203.9 MB in the beginning and 237.0 MB in the end (delta: 33.0 MB). Free memory was 170.1 MB in the beginning and 202.2 MB in the end (delta: -32.0 MB). Peak memory consumption was 84.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11304.82 ms. Allocated memory was 237.0 MB in the beginning and 463.5 MB in the end (delta: 226.5 MB). Free memory was 202.2 MB in the beginning and 345.6 MB in the end (delta: -143.4 MB). Peak memory consumption was 83.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 799]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L78] int cleanupTimeShifts = 4; [L386] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L588] int pumpRunning = 0; [L589] int systemActive = 1; [L804] int waterLevel = 1; [L805] int methaneLevelCritical = 0; [L159] int retValue_acc ; [L160] int tmp ; [L164] FCALL select_helpers() [L165] FCALL select_features() [L166] CALL, EXPR valid_product() [L208] int retValue_acc ; [L211] retValue_acc = 1 [L212] return (retValue_acc); [L166] RET, EXPR valid_product() [L166] tmp = valid_product() [L168] COND TRUE \read(tmp) [L170] FCALL setup() [L171] CALL runTest() [L150] CALL test() [L729] int splverifierCounter ; [L730] int tmp ; [L731] int tmp___0 ; [L732] int tmp___1 ; [L733] int tmp___2 ; [L736] splverifierCounter = 0 [L738] COND TRUE 1 [L740] COND TRUE splverifierCounter < 4 [L746] tmp = __VERIFIER_nondet_int() [L748] COND TRUE \read(tmp) [L750] CALL waterRise() [L822] COND TRUE waterLevel < 2 [L823] waterLevel = waterLevel + 1 [L750] RET waterRise() [L756] tmp___0 = __VERIFIER_nondet_int() [L758] COND FALSE !(\read(tmp___0)) [L766] tmp___2 = __VERIFIER_nondet_int() [L768] COND TRUE \read(tmp___2) [L783] CALL timeShift() [L595] COND FALSE !(\read(pumpRunning)) [L602] COND TRUE \read(systemActive) [L604] FCALL processEnvironment() [L610] CALL __utac_acc__Specification3_spec__1() [L45] int tmp ; [L46] int tmp___0 ; [L47] int tmp___1 ; [L51] CALL, EXPR isMethaneLevelCritical() [L843] int retValue_acc ; [L846] retValue_acc = methaneLevelCritical [L847] return (retValue_acc); [L51] RET, EXPR isMethaneLevelCritical() [L51] tmp = isMethaneLevelCritical() [L53] COND FALSE !(\read(tmp)) [L57] CALL, EXPR getWaterLevel() [L875] int retValue_acc ; [L878] retValue_acc = waterLevel [L879] return (retValue_acc); [L57] RET, EXPR getWaterLevel() [L57] tmp___0 = getWaterLevel() [L59] COND TRUE tmp___0 == 2 [L61] CALL, EXPR isPumpRunning() [L668] int retValue_acc ; [L671] retValue_acc = pumpRunning [L672] return (retValue_acc); [L61] RET, EXPR isPumpRunning() [L61] tmp___1 = isPumpRunning() [L63] COND FALSE !(\read(tmp___1)) [L67] CALL __automaton_fail() [L799] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 210 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 415 SDtfs, 629 SDslu, 307 SDs, 0 SdLazy, 1278 SolverSat, 361 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 149 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 350 NumberOfCodeBlocks, 350 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 281 ConstructedInterpolants, 0 QuantifiedInterpolants, 78428 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...