/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:49:49,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:49:49,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:49:49,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:49:49,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:49:49,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:49:49,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:49:49,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:49:49,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:49:49,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:49:49,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:49:49,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:49:49,803 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:49:49,804 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:49:49,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:49:49,806 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:49:49,806 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:49:49,807 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:49:49,809 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:49:49,811 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:49:49,812 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:49:49,813 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:49:49,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:49:49,815 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:49:49,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:49:49,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:49:49,818 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:49:49,819 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:49:49,819 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:49:49,820 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:49:49,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:49:49,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:49:49,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:49:49,823 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:49:49,824 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:49:49,824 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:49:49,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:49:49,825 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:49:49,825 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:49:49,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:49:49,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:49:49,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:49:49,850 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:49:49,850 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:49:49,851 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:49:49,852 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:49:49,852 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:49:49,852 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:49:49,852 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:49:49,852 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:49:49,853 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:49:49,854 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:49:49,854 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:49:49,854 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:49:49,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:49:49,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:49:49,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:49:49,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:49:49,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:49,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:49:49,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:49:49,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:49:49,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:49:49,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:49:49,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:49:49,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:49:49,857 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 05:49:50,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:49:50,196 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:49:50,200 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:49:50,201 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:49:50,203 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:49:50,203 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-08-19 05:49:50,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a3ff2aea/08a264649e074d94880445ea31e5b632/FLAGed00e9497 [2020-08-19 05:49:50,832 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:49:50,832 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product17.cil.c [2020-08-19 05:49:50,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a3ff2aea/08a264649e074d94880445ea31e5b632/FLAGed00e9497 [2020-08-19 05:49:51,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1a3ff2aea/08a264649e074d94880445ea31e5b632 [2020-08-19 05:49:51,136 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:49:51,139 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:49:51,141 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:51,141 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:49:51,145 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:49:51,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e6cae7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51, skipping insertion in model container [2020-08-19 05:49:51,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,161 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:49:51,254 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:49:51,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:51,760 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:49:51,843 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:49:51,874 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:49:51,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51 WrapperNode [2020-08-19 05:49:51,875 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:49:51,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:49:51,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:49:51,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:49:51,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... [2020-08-19 05:49:51,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:49:51,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:49:51,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:49:51,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:49:51,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:49:52,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:52,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:49:52,040 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:49:52,041 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:49:52,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:49:52,043 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:49:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:49:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:49:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:49:52,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:49:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:49:52,044 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:49:52,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:49:52,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:49:52,047 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:49:52,048 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:49:52,049 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:49:52,050 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:49:52,051 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:49:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:49:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:49:52,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:49:53,115 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:49:53,116 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:49:53,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:53 BoogieIcfgContainer [2020-08-19 05:49:53,121 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:49:53,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:49:53,123 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:49:53,126 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:49:53,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:49:51" (1/3) ... [2020-08-19 05:49:53,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b87486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:53, skipping insertion in model container [2020-08-19 05:49:53,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:49:51" (2/3) ... [2020-08-19 05:49:53,128 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b87486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:49:53, skipping insertion in model container [2020-08-19 05:49:53,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:49:53" (3/3) ... [2020-08-19 05:49:53,130 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product17.cil.c [2020-08-19 05:49:53,140 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:49:53,148 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:49:53,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:49:53,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:49:53,189 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:49:53,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:49:53,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:49:53,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:49:53,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:49:53,190 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:49:53,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:49:53,210 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states. [2020-08-19 05:49:53,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 05:49:53,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:53,221 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] [2020-08-19 05:49:53,221 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:53,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:53,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1926070200, now seen corresponding path program 1 times [2020-08-19 05:49:53,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:53,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879730305] [2020-08-19 05:49:53,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:53,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,830 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:53,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:53,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:53,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:53,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:53,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:49:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:49:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:53,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 05:49:53,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:54,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879730305] [2020-08-19 05:49:54,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:54,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:49:54,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618838095] [2020-08-19 05:49:54,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:49:54,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:54,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:49:54,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:49:54,051 INFO L87 Difference]: Start difference. First operand 156 states. Second operand 3 states. [2020-08-19 05:49:55,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:55,079 INFO L93 Difference]: Finished difference Result 259 states and 341 transitions. [2020-08-19 05:49:55,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:49:55,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-19 05:49:55,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:55,096 INFO L225 Difference]: With dead ends: 259 [2020-08-19 05:49:55,096 INFO L226 Difference]: Without dead ends: 140 [2020-08-19 05:49:55,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:49:55,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-19 05:49:55,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 110. [2020-08-19 05:49:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-19 05:49:55,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2020-08-19 05:49:55,195 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 52 [2020-08-19 05:49:55,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:55,196 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2020-08-19 05:49:55,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:49:55,196 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2020-08-19 05:49:55,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-19 05:49:55,200 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:55,200 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] [2020-08-19 05:49:55,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:49:55,200 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:55,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:55,201 INFO L82 PathProgramCache]: Analyzing trace with hash 475112747, now seen corresponding path program 1 times [2020-08-19 05:49:55,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:55,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972130823] [2020-08-19 05:49:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,513 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:55,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:55,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:55,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:55,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:49:55,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:49:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:55,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:55,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972130823] [2020-08-19 05:49:55,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:55,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:49:55,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627110471] [2020-08-19 05:49:55,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:49:55,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:55,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:49:55,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:49:55,581 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand 4 states. [2020-08-19 05:49:55,989 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:49:56,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:56,608 INFO L93 Difference]: Finished difference Result 192 states and 232 transitions. [2020-08-19 05:49:56,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:49:56,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-19 05:49:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:56,611 INFO L225 Difference]: With dead ends: 192 [2020-08-19 05:49:56,611 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 05:49:56,613 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 [2020-08-19 05:49:56,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 05:49:56,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-19 05:49:56,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 05:49:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2020-08-19 05:49:56,647 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 53 [2020-08-19 05:49:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:56,647 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2020-08-19 05:49:56,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:49:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2020-08-19 05:49:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:49:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:56,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:49:56,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:49:56,650 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:56,650 INFO L82 PathProgramCache]: Analyzing trace with hash 40226853, now seen corresponding path program 1 times [2020-08-19 05:49:56,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:56,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1198160586] [2020-08-19 05:49:56,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,017 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:57,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:57,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:57,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:49:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:49:57,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:49:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:57,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1198160586] [2020-08-19 05:49:57,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:57,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:57,123 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475809966] [2020-08-19 05:49:57,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:57,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:57,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:57,128 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 8 states. [2020-08-19 05:49:57,488 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:49:57,796 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:58,022 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:58,278 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:49:59,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:49:59,187 INFO L93 Difference]: Finished difference Result 201 states and 246 transitions. [2020-08-19 05:49:59,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:49:59,188 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-19 05:49:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:49:59,193 INFO L225 Difference]: With dead ends: 201 [2020-08-19 05:49:59,194 INFO L226 Difference]: Without dead ends: 124 [2020-08-19 05:49:59,195 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:49:59,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-19 05:49:59,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 101. [2020-08-19 05:49:59,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-08-19 05:49:59,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2020-08-19 05:49:59,240 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 57 [2020-08-19 05:49:59,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:49:59,241 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2020-08-19 05:49:59,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:49:59,241 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2020-08-19 05:49:59,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 05:49:59,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:49:59,247 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] [2020-08-19 05:49:59,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:49:59,248 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:49:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:49:59,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1164680110, now seen corresponding path program 1 times [2020-08-19 05:49:59,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:49:59,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292725434] [2020-08-19 05:49:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:49:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,569 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:49:59,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:49:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:49:59,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:49:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:49:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:49:59,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 05:49:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:49:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 05:49:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 05:49:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-19 05:49:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:49:59,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:49:59,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292725434] [2020-08-19 05:49:59,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:49:59,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:49:59,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104279175] [2020-08-19 05:49:59,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:49:59,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:49:59,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:49:59,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:49:59,685 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand 8 states. [2020-08-19 05:50:00,041 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:01,210 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:01,543 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:01,827 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:50:02,101 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:02,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:02,693 INFO L93 Difference]: Finished difference Result 299 states and 390 transitions. [2020-08-19 05:50:02,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:50:02,695 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2020-08-19 05:50:02,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:02,700 INFO L225 Difference]: With dead ends: 299 [2020-08-19 05:50:02,701 INFO L226 Difference]: Without dead ends: 222 [2020-08-19 05:50:02,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:50:02,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2020-08-19 05:50:02,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 176. [2020-08-19 05:50:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-08-19 05:50:02,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 207 transitions. [2020-08-19 05:50:02,754 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 207 transitions. Word has length 65 [2020-08-19 05:50:02,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:02,755 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 207 transitions. [2020-08-19 05:50:02,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:50:02,755 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 207 transitions. [2020-08-19 05:50:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 05:50:02,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:02,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:02,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:50:02,758 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:02,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:02,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1251292780, now seen corresponding path program 1 times [2020-08-19 05:50:02,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:02,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346261520] [2020-08-19 05:50:02,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:02,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,074 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:50:03,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:50:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:50:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:50:03,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:50:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:50:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 05:50:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:50:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:50:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:50:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-19 05:50:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:50:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:50:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:50:03,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346261520] [2020-08-19 05:50:03,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:50:03,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:50:03,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097926430] [2020-08-19 05:50:03,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:50:03,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:50:03,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:50:03,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:50:03,163 INFO L87 Difference]: Start difference. First operand 176 states and 207 transitions. Second operand 6 states. [2020-08-19 05:50:03,481 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:50:03,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:50:03,972 INFO L93 Difference]: Finished difference Result 289 states and 355 transitions. [2020-08-19 05:50:03,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:50:03,972 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-08-19 05:50:03,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:50:03,974 INFO L225 Difference]: With dead ends: 289 [2020-08-19 05:50:03,974 INFO L226 Difference]: Without dead ends: 137 [2020-08-19 05:50:03,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:50:03,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-08-19 05:50:04,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 125. [2020-08-19 05:50:04,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 05:50:04,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 140 transitions. [2020-08-19 05:50:04,016 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 140 transitions. Word has length 69 [2020-08-19 05:50:04,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:50:04,017 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 140 transitions. [2020-08-19 05:50:04,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:50:04,017 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 140 transitions. [2020-08-19 05:50:04,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-19 05:50:04,018 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:50:04,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:50:04,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:50:04,018 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:50:04,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:50:04,019 INFO L82 PathProgramCache]: Analyzing trace with hash 558485620, now seen corresponding path program 1 times [2020-08-19 05:50:04,019 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:50:04,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102361128] [2020-08-19 05:50:04,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:50:04,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 05:50:04,090 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 05:50:04,091 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 05:50:04,095 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:50:04,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 05:50:04 BoogieIcfgContainer [2020-08-19 05:50:04,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 05:50:04,123 INFO L168 Benchmark]: Toolchain (without parser) took 12984.44 ms. Allocated memory was 146.8 MB in the beginning and 414.7 MB in the end (delta: 267.9 MB). Free memory was 101.9 MB in the beginning and 146.5 MB in the end (delta: -44.6 MB). Peak memory consumption was 223.4 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,124 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,125 INFO L168 Benchmark]: CACSL2BoogieTranslator took 734.49 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,125 INFO L168 Benchmark]: Boogie Preprocessor took 99.33 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,126 INFO L168 Benchmark]: RCFGBuilder took 1145.90 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 168.8 MB in the beginning and 200.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,127 INFO L168 Benchmark]: TraceAbstraction took 10998.27 ms. Allocated memory was 237.0 MB in the beginning and 414.7 MB in the end (delta: 177.7 MB). Free memory was 200.4 MB in the beginning and 146.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 231.7 MB. Max. memory is 7.1 GB. [2020-08-19 05:50:04,131 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 734.49 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 101.7 MB in the beginning and 172.9 MB in the end (delta: -71.3 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 99.33 ms. Allocated memory is still 202.9 MB. Free memory was 172.9 MB in the beginning and 168.8 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1145.90 ms. Allocated memory was 202.9 MB in the beginning and 237.0 MB in the end (delta: 34.1 MB). Free memory was 168.8 MB in the beginning and 200.4 MB in the end (delta: -31.6 MB). Peak memory consumption was 84.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10998.27 ms. Allocated memory was 237.0 MB in the beginning and 414.7 MB in the end (delta: 177.7 MB). Free memory was 200.4 MB in the beginning and 146.5 MB in the end (delta: 54.0 MB). Peak memory consumption was 231.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 506]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L413] int waterLevel = 1; [L414] int methaneLevelCritical = 0; [L582] int pumpRunning = 0; [L583] int systemActive = 1; [L735] int cleanupTimeShifts = 4; [L811] int retValue_acc ; [L812] int tmp ; [L816] FCALL select_helpers() [L817] FCALL select_features() [L818] CALL, EXPR valid_product() [L860] int retValue_acc ; [L863] retValue_acc = 1 [L864] return (retValue_acc); [L818] RET, EXPR valid_product() [L818] tmp = valid_product() [L820] COND TRUE \read(tmp) [L822] FCALL setup() [L823] CALL runTest() [L802] CALL test() [L514] int splverifierCounter ; [L515] int tmp ; [L516] int tmp___0 ; [L517] int tmp___1 ; [L518] int tmp___2 ; [L521] splverifierCounter = 0 [L523] COND TRUE 1 [L525] COND TRUE splverifierCounter < 4 [L531] tmp = __VERIFIER_nondet_int() [L533] COND TRUE \read(tmp) [L535] CALL waterRise() [L431] COND TRUE waterLevel < 2 [L432] waterLevel = waterLevel + 1 [L535] RET waterRise() [L541] tmp___0 = __VERIFIER_nondet_int() [L543] COND FALSE !(\read(tmp___0)) [L551] tmp___2 = __VERIFIER_nondet_int() [L553] COND TRUE \read(tmp___2) [L566] CALL timeShift() [L590] COND FALSE !(\read(pumpRunning)) [L597] COND TRUE \read(systemActive) [L599] CALL processEnvironment() [L619] int tmp ; [L622] COND FALSE !(\read(pumpRunning)) [L637] FCALL processEnvironment__wrappee__base() [L599] RET processEnvironment() [L605] CALL __utac_acc__Specification3_spec__1() [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L876] CALL, EXPR isMethaneLevelCritical() [L452] int retValue_acc ; [L455] retValue_acc = methaneLevelCritical [L456] return (retValue_acc); [L876] RET, EXPR isMethaneLevelCritical() [L876] tmp = isMethaneLevelCritical() [L878] COND FALSE !(\read(tmp)) [L882] CALL, EXPR getWaterLevel() [L484] int retValue_acc ; [L487] retValue_acc = waterLevel [L488] return (retValue_acc); [L882] RET, EXPR getWaterLevel() [L882] tmp___0 = getWaterLevel() [L884] COND TRUE tmp___0 == 2 [L886] CALL, EXPR isPumpRunning() [L671] int retValue_acc ; [L674] retValue_acc = pumpRunning [L675] return (retValue_acc); [L886] RET, EXPR isPumpRunning() [L886] tmp___1 = isPumpRunning() [L888] COND FALSE !(\read(tmp___1)) [L892] CALL __automaton_fail() [L506] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 217 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.9s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 444 SDtfs, 684 SDslu, 242 SDs, 0 SdLazy, 1325 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 131 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred 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, 134 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 291 ConstructedInterpolants, 0 QuantifiedInterpolants, 82382 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...