/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 10:21:40,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 10:21:40,709 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 10:21:40,753 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 10:21:40,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 10:21:40,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 10:21:40,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 10:21:40,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 10:21:40,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 10:21:40,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 10:21:40,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 10:21:40,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 10:21:40,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 10:21:40,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 10:21:40,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 10:21:40,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 10:21:40,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 10:21:40,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 10:21:40,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 10:21:40,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 10:21:40,805 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 10:21:40,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 10:21:40,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 10:21:40,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 10:21:40,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 10:21:40,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 10:21:40,814 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 10:21:40,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 10:21:40,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 10:21:40,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 10:21:40,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 10:21:40,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 10:21:40,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 10:21:40,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 10:21:40,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 10:21:40,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 10:21:40,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 10:21:40,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 10:21:40,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 10:21:40,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 10:21:40,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 10:21:40,828 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 [2020-08-18 10:21:40,874 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 10:21:40,874 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 10:21:40,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 10:21:40,876 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 10:21:40,876 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 10:21:40,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 10:21:40,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 10:21:40,877 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 10:21:40,877 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 10:21:40,877 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 10:21:40,878 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 10:21:40,878 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 10:21:40,879 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 10:21:40,879 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 10:21:40,879 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 10:21:40,879 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 10:21:40,880 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 10:21:40,880 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 10:21:40,880 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 10:21:40,880 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 10:21:40,880 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 10:21:40,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 10:21:40,881 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 10:21:40,881 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 10:21:40,881 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 10:21:40,881 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 10:21:40,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 10:21:40,882 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 10:21:40,882 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 10:21:40,882 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 -> false [2020-08-18 10:21:41,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 10:21:41,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 10:21:41,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 10:21:41,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 10:21:41,194 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 10:21:41,195 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-08-18 10:21:41,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97085d23/d3a9cd000a2442b583d86e809ef9ed38/FLAGc5569a9d3 [2020-08-18 10:21:41,816 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 10:21:41,816 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product10.cil.c [2020-08-18 10:21:41,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97085d23/d3a9cd000a2442b583d86e809ef9ed38/FLAGc5569a9d3 [2020-08-18 10:21:42,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b97085d23/d3a9cd000a2442b583d86e809ef9ed38 [2020-08-18 10:21:42,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 10:21:42,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 10:21:42,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:42,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 10:21:42,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 10:21:42,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b44b751 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42, skipping insertion in model container [2020-08-18 10:21:42,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 10:21:42,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 10:21:42,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:42,659 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 10:21:42,743 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 10:21:42,779 INFO L208 MainTranslator]: Completed translation [2020-08-18 10:21:42,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42 WrapperNode [2020-08-18 10:21:42,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 10:21:42,780 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 10:21:42,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 10:21:42,781 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 10:21:42,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (1/1) ... [2020-08-18 10:21:42,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 10:21:42,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 10:21:42,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 10:21:42,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 10:21:42,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (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 [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 10:21:42,927 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 10:21:42,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 10:21:42,929 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__base [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 10:21:42,930 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 10:21:42,931 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 10:21:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 10:21:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 10:21:42,932 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 10:21:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 10:21:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 10:21:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 10:21:42,932 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 10:21:42,933 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 10:21:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 10:21:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 10:21:42,936 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 10:21:42,937 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 10:21:42,938 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__base [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 10:21:42,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 10:21:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 10:21:42,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 10:21:43,891 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 10:21:43,892 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 10:21:43,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:43 BoogieIcfgContainer [2020-08-18 10:21:43,897 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 10:21:43,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 10:21:43,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 10:21:43,902 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 10:21:43,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:21:42" (1/3) ... [2020-08-18 10:21:43,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6cb69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:43, skipping insertion in model container [2020-08-18 10:21:43,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:21:42" (2/3) ... [2020-08-18 10:21:43,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f6cb69c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:21:43, skipping insertion in model container [2020-08-18 10:21:43,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:21:43" (3/3) ... [2020-08-18 10:21:43,907 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product10.cil.c [2020-08-18 10:21:43,918 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 10:21:43,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 10:21:43,940 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 10:21:43,966 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 10:21:43,966 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 10:21:43,967 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 10:21:43,967 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 10:21:43,967 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 10:21:43,967 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 10:21:43,968 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 10:21:43,968 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 10:21:43,991 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states. [2020-08-18 10:21:44,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 10:21:44,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:44,001 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] [2020-08-18 10:21:44,002 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:44,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:44,008 INFO L82 PathProgramCache]: Analyzing trace with hash -1414244218, now seen corresponding path program 1 times [2020-08-18 10:21:44,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:44,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987162985] [2020-08-18 10:21:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:44,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,713 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:44,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 10:21:44,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:44,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:44,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:44,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:44,838 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1987162985] [2020-08-18 10:21:44,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:44,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 10:21:44,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192250299] [2020-08-18 10:21:44,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 10:21:44,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 10:21:44,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 10:21:44,865 INFO L87 Difference]: Start difference. First operand 145 states. Second operand 3 states. [2020-08-18 10:21:45,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:45,776 INFO L93 Difference]: Finished difference Result 220 states and 294 transitions. [2020-08-18 10:21:45,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 10:21:45,778 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-18 10:21:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:45,792 INFO L225 Difference]: With dead ends: 220 [2020-08-18 10:21:45,792 INFO L226 Difference]: Without dead ends: 120 [2020-08-18 10:21:45,797 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 [2020-08-18 10:21:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-08-18 10:21:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 91. [2020-08-18 10:21:45,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-08-18 10:21:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 105 transitions. [2020-08-18 10:21:45,910 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 105 transitions. Word has length 52 [2020-08-18 10:21:45,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:45,911 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 105 transitions. [2020-08-18 10:21:45,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 10:21:45,911 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 105 transitions. [2020-08-18 10:21:45,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-18 10:21:45,918 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:45,919 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] [2020-08-18 10:21:45,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 10:21:45,920 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:45,920 INFO L82 PathProgramCache]: Analyzing trace with hash -803860910, now seen corresponding path program 1 times [2020-08-18 10:21:45,921 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:45,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147613015] [2020-08-18 10:21:45,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,344 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:46,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:46,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 10:21:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 10:21:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:46,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:46,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:46,421 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147613015] [2020-08-18 10:21:46,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:46,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 10:21:46,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136287615] [2020-08-18 10:21:46,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 10:21:46,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:46,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 10:21:46,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 10:21:46,426 INFO L87 Difference]: Start difference. First operand 91 states and 105 transitions. Second operand 4 states. [2020-08-18 10:21:46,881 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 10:21:47,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:47,425 INFO L93 Difference]: Finished difference Result 149 states and 181 transitions. [2020-08-18 10:21:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 10:21:47,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-18 10:21:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:47,432 INFO L225 Difference]: With dead ends: 149 [2020-08-18 10:21:47,433 INFO L226 Difference]: Without dead ends: 104 [2020-08-18 10:21:47,434 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 [2020-08-18 10:21:47,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-18 10:21:47,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-18 10:21:47,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 10:21:47,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 93 transitions. [2020-08-18 10:21:47,462 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 93 transitions. Word has length 53 [2020-08-18 10:21:47,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:47,463 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 93 transitions. [2020-08-18 10:21:47,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 10:21:47,463 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 93 transitions. [2020-08-18 10:21:47,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 10:21:47,465 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:47,466 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] [2020-08-18 10:21:47,466 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 10:21:47,466 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:47,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash 9396391, now seen corresponding path program 1 times [2020-08-18 10:21:47,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:47,467 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1579329216] [2020-08-18 10:21:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,809 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:47,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:47,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:47,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:47,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 10:21:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 10:21:47,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 10:21:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:47,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:47,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1579329216] [2020-08-18 10:21:47,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:47,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 10:21:47,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925462788] [2020-08-18 10:21:47,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 10:21:47,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:47,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 10:21:47,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 10:21:47,913 INFO L87 Difference]: Start difference. First operand 82 states and 93 transitions. Second operand 8 states. [2020-08-18 10:21:48,276 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:48,591 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:48,843 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:49,110 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:49,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:49,841 INFO L93 Difference]: Finished difference Result 162 states and 199 transitions. [2020-08-18 10:21:49,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 10:21:49,842 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-18 10:21:49,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:49,845 INFO L225 Difference]: With dead ends: 162 [2020-08-18 10:21:49,845 INFO L226 Difference]: Without dead ends: 104 [2020-08-18 10:21:49,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-08-18 10:21:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 82. [2020-08-18 10:21:49,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-08-18 10:21:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-08-18 10:21:49,872 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 58 [2020-08-18 10:21:49,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:49,873 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-08-18 10:21:49,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 10:21:49,873 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-08-18 10:21:49,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 10:21:49,874 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:49,874 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] [2020-08-18 10:21:49,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 10:21:49,875 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:49,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:49,875 INFO L82 PathProgramCache]: Analyzing trace with hash 446188768, now seen corresponding path program 1 times [2020-08-18 10:21:49,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:49,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307242913] [2020-08-18 10:21:49,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:49,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,206 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:50,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:50,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 10:21:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 10:21:50,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 10:21:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-18 10:21:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:50,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:50,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307242913] [2020-08-18 10:21:50,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:50,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 10:21:50,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136481391] [2020-08-18 10:21:50,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 10:21:50,311 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:50,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 10:21:50,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:50,313 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 7 states. [2020-08-18 10:21:50,599 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:51,486 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:51,769 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:52,035 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 10:21:52,286 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:52,567 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2020-08-18 10:21:52,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 10:21:52,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2020-08-18 10:21:52,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:52,570 INFO L225 Difference]: With dead ends: 209 [2020-08-18 10:21:52,571 INFO L226 Difference]: Without dead ends: 151 [2020-08-18 10:21:52,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2020-08-18 10:21:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-18 10:21:52,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 136. [2020-08-18 10:21:52,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-18 10:21:52,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 158 transitions. [2020-08-18 10:21:52,613 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 158 transitions. Word has length 61 [2020-08-18 10:21:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:52,613 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 158 transitions. [2020-08-18 10:21:52,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 10:21:52,613 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 158 transitions. [2020-08-18 10:21:52,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:21:52,615 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:52,616 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] [2020-08-18 10:21:52,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 10:21:52,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:52,617 INFO L82 PathProgramCache]: Analyzing trace with hash 236169914, now seen corresponding path program 1 times [2020-08-18 10:21:52,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:52,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744491643] [2020-08-18 10:21:52,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:52,917 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 10:21:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 10:21:52,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:52,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 10:21:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 10:21:52,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 10:21:53,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 10:21:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-18 10:21:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 10:21:53,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 10:21:53,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 10:21:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 10:21:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 10:21:53,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 10:21:53,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744491643] [2020-08-18 10:21:53,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 10:21:53,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 10:21:53,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584738612] [2020-08-18 10:21:53,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 10:21:53,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 10:21:53,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 10:21:53,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 10:21:53,077 INFO L87 Difference]: Start difference. First operand 136 states and 158 transitions. Second operand 5 states. [2020-08-18 10:21:53,488 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 10:21:53,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 10:21:53,991 INFO L93 Difference]: Finished difference Result 205 states and 247 transitions. [2020-08-18 10:21:53,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 10:21:53,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-08-18 10:21:53,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 10:21:53,996 INFO L225 Difference]: With dead ends: 205 [2020-08-18 10:21:53,997 INFO L226 Difference]: Without dead ends: 136 [2020-08-18 10:21:53,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 10:21:53,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-08-18 10:21:54,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 123. [2020-08-18 10:21:54,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-08-18 10:21:54,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2020-08-18 10:21:54,051 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 65 [2020-08-18 10:21:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 10:21:54,055 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2020-08-18 10:21:54,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 10:21:54,055 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2020-08-18 10:21:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 10:21:54,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 10:21:54,061 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] [2020-08-18 10:21:54,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 10:21:54,062 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 10:21:54,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 10:21:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash 993675046, now seen corresponding path program 1 times [2020-08-18 10:21:54,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 10:21:54,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185296517] [2020-08-18 10:21:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 10:21:54,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 10:21:54,165 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 10:21:54,165 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 10:21:54,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 10:21:54,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:21:54 BoogieIcfgContainer [2020-08-18 10:21:54,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 10:21:54,204 INFO L168 Benchmark]: Toolchain (without parser) took 12034.17 ms. Allocated memory was 141.0 MB in the beginning and 415.2 MB in the end (delta: 274.2 MB). Free memory was 101.5 MB in the beginning and 299.6 MB in the end (delta: -198.0 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:54,205 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 10:21:54,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.60 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 172.1 MB in the end (delta: -70.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:54,212 INFO L168 Benchmark]: Boogie Preprocessor took 89.13 ms. Allocated memory is still 203.4 MB. Free memory was 172.1 MB in the beginning and 167.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:54,213 INFO L168 Benchmark]: RCFGBuilder took 1027.93 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 167.6 MB in the beginning and 195.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:54,214 INFO L168 Benchmark]: TraceAbstraction took 10301.92 ms. Allocated memory was 233.8 MB in the beginning and 415.2 MB in the end (delta: 181.4 MB). Free memory was 195.3 MB in the beginning and 299.6 MB in the end (delta: -104.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2020-08-18 10:21:54,225 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 610.60 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 172.1 MB in the end (delta: -70.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.13 ms. Allocated memory is still 203.4 MB. Free memory was 172.1 MB in the beginning and 167.6 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1027.93 ms. Allocated memory was 203.4 MB in the beginning and 233.8 MB in the end (delta: 30.4 MB). Free memory was 167.6 MB in the beginning and 195.3 MB in the end (delta: -27.7 MB). Peak memory consumption was 80.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10301.92 ms. Allocated memory was 233.8 MB in the beginning and 415.2 MB in the end (delta: 181.4 MB). Free memory was 195.3 MB in the beginning and 299.6 MB in the end (delta: -104.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 168]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L84] int waterLevel = 1; [L85] int methaneLevelCritical = 0; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L613] int pumpRunning = 0; [L614] int systemActive = 1; [L781] int cleanupTimeShifts = 4; [L854] int retValue_acc ; [L855] int tmp ; [L859] FCALL select_helpers() [L860] FCALL select_features() [L861] CALL, EXPR valid_product() [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L861] RET, EXPR valid_product() [L861] tmp = valid_product() [L863] COND TRUE \read(tmp) [L865] FCALL setup() [L866] CALL runTest() [L848] CALL test() [L543] int splverifierCounter ; [L544] int tmp ; [L545] int tmp___0 ; [L546] int tmp___1 ; [L547] int tmp___2 ; [L550] splverifierCounter = 0 [L552] COND TRUE 1 [L554] COND TRUE splverifierCounter < 4 [L560] tmp = __VERIFIER_nondet_int() [L562] COND TRUE \read(tmp) [L564] CALL waterRise() [L102] COND TRUE waterLevel < 2 [L103] waterLevel = waterLevel + 1 [L564] RET waterRise() [L570] tmp___0 = __VERIFIER_nondet_int() [L572] COND FALSE !(\read(tmp___0)) [L580] tmp___2 = __VERIFIER_nondet_int() [L582] COND FALSE !(\read(tmp___2)) [L588] tmp___1 = __VERIFIER_nondet_int() [L590] COND FALSE !(\read(tmp___1)) [L597] CALL timeShift() [L621] COND FALSE !(\read(pumpRunning)) [L628] COND TRUE \read(systemActive) [L630] FCALL processEnvironment() [L636] CALL __utac_acc__Specification3_spec__1() [L748] int tmp ; [L749] int tmp___0 ; [L750] int tmp___1 ; [L754] CALL, EXPR isMethaneLevelCritical() [L123] int retValue_acc ; [L126] retValue_acc = methaneLevelCritical [L127] return (retValue_acc); [L754] RET, EXPR isMethaneLevelCritical() [L754] tmp = isMethaneLevelCritical() [L756] COND FALSE !(\read(tmp)) [L760] CALL, EXPR getWaterLevel() [L155] int retValue_acc ; [L158] retValue_acc = waterLevel [L159] return (retValue_acc); [L760] RET, EXPR getWaterLevel() [L760] tmp___0 = getWaterLevel() [L762] COND TRUE tmp___0 == 2 [L764] CALL, EXPR isPumpRunning() [L694] int retValue_acc ; [L697] retValue_acc = pumpRunning [L698] return (retValue_acc); [L764] RET, EXPR isPumpRunning() [L764] tmp___1 = isPumpRunning() [L766] COND FALSE !(\read(tmp___1)) [L770] CALL __automaton_fail() [L168] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 36 procedures, 208 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.2s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 7.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 386 SDtfs, 474 SDslu, 214 SDs, 0 SdLazy, 1003 SolverSat, 275 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 94 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=0, 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, 101 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 79940 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...