/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:31:50,732 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:31:50,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:31:50,780 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:31:50,780 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:31:50,793 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:31:50,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:31:50,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:31:50,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:31:50,803 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:31:50,804 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:31:50,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:31:50,806 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:31:50,811 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:31:50,813 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:31:50,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:31:50,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:31:50,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:31:50,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:31:50,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:31:50,830 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:31:50,831 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:31:50,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:31:50,833 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:31:50,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:31:50,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:31:50,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:31:50,841 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:31:50,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:31:50,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:31:50,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:31:50,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:31:50,844 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:31:50,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:31:50,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:31:50,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:31:50,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:31:50,847 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:31:50,847 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:31:50,848 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:31:50,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:31:50,850 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 02:31:50,894 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:31:50,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:31:50,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:31:50,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:31:50,897 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:31:50,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:31:50,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:31:50,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:31:50,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:31:50,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:31:50,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:31:50,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:31:50,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:31:50,900 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:31:50,900 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:31:50,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:31:50,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:31:50,901 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:31:50,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:31:50,901 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:31:50,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:31:50,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:31:50,902 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:31:50,902 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:31:50,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:31:50,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:31:50,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:31:50,903 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:31:50,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:31:50,903 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:31:51,192 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:31:51,206 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:31:51,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:31:51,213 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:31:51,214 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:31:51,215 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-19 02:31:51,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0e66692/93a4dbe3d8cf45c89b9f897597eb1dbf/FLAG7a821bdeb [2020-08-19 02:31:51,891 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:31:51,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product33.cil.c [2020-08-19 02:31:51,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0e66692/93a4dbe3d8cf45c89b9f897597eb1dbf/FLAG7a821bdeb [2020-08-19 02:31:52,149 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b0e66692/93a4dbe3d8cf45c89b9f897597eb1dbf [2020-08-19 02:31:52,158 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:31:52,159 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:31:52,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:31:52,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:31:52,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:31:52,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,168 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52, skipping insertion in model container [2020-08-19 02:31:52,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:31:52,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:31:52,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:31:52,586 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:31:52,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:31:52,804 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:31:52,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52 WrapperNode [2020-08-19 02:31:52,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:31:52,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:31:52,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:31:52,806 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:31:52,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,872 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,888 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (1/1) ... [2020-08-19 02:31:52,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:31:52,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:31:52,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:31:52,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:31:52,898 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (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 02:31:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:31:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:31:52,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:31:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:31:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:31:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:31:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:31:53,000 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:31:53,001 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:31:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:31:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:31:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:31:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:31:53,002 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:31:53,003 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:31:53,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:31:53,004 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:31:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:31:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:31:53,005 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:31:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:31:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:31:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:31:53,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:31:53,007 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:31:53,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:31:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:31:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:31:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:31:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:31:53,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:31:53,009 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:31:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:31:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:31:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:31:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:31:53,010 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:31:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:31:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:31:53,011 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:31:53,012 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:31:53,013 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:31:53,014 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:31:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:31:53,015 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:31:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:31:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:31:53,016 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:31:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:31:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:31:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:31:53,017 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:31:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:31:53,018 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:31:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:31:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:31:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:31:53,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:31:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:31:53,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:31:54,093 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:31:54,093 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:31:54,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:31:54 BoogieIcfgContainer [2020-08-19 02:31:54,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:31:54,101 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:31:54,101 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:31:54,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:31:54,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:31:52" (1/3) ... [2020-08-19 02:31:54,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13802861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:31:54, skipping insertion in model container [2020-08-19 02:31:54,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:31:52" (2/3) ... [2020-08-19 02:31:54,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13802861 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:31:54, skipping insertion in model container [2020-08-19 02:31:54,108 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:31:54" (3/3) ... [2020-08-19 02:31:54,109 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product33.cil.c [2020-08-19 02:31:54,122 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:31:54,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:31:54,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:31:54,211 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:31:54,211 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:31:54,212 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:31:54,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:31:54,212 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:31:54,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:31:54,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:31:54,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:31:54,256 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states. [2020-08-19 02:31:54,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:31:54,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:31:54,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:31:54,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:31:54,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:31:54,275 INFO L82 PathProgramCache]: Analyzing trace with hash 936709255, now seen corresponding path program 1 times [2020-08-19 02:31:54,294 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:31:54,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259204049] [2020-08-19 02:31:54,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:31:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,002 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:31:55,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:31:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:31:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:31:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:31:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:31:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:31:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:31:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:55,132 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 02:31:55,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259204049] [2020-08-19 02:31:55,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:31:55,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:31:55,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022143994] [2020-08-19 02:31:55,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:31:55,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:31:55,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:31:55,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:31:55,161 INFO L87 Difference]: Start difference. First operand 151 states. Second operand 3 states. [2020-08-19 02:31:56,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:31:56,169 INFO L93 Difference]: Finished difference Result 249 states and 331 transitions. [2020-08-19 02:31:56,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:31:56,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:31:56,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:31:56,188 INFO L225 Difference]: With dead ends: 249 [2020-08-19 02:31:56,188 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 02:31:56,194 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:31:56,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 02:31:56,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 105. [2020-08-19 02:31:56,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-19 02:31:56,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 123 transitions. [2020-08-19 02:31:56,276 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 123 transitions. Word has length 46 [2020-08-19 02:31:56,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:31:56,277 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 123 transitions. [2020-08-19 02:31:56,277 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:31:56,277 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 123 transitions. [2020-08-19 02:31:56,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:31:56,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:31:56,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:31:56,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:31:56,282 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:31:56,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:31:56,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1814743517, now seen corresponding path program 1 times [2020-08-19 02:31:56,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:31:56,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786771646] [2020-08-19 02:31:56,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:31:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,626 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:31:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:31:56,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:31:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:31:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:31:56,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:31:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:31:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:31:56,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:56,684 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 02:31:56,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786771646] [2020-08-19 02:31:56,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:31:56,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:31:56,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276553120] [2020-08-19 02:31:56,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:31:56,687 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:31:56,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:31:56,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:31:56,688 INFO L87 Difference]: Start difference. First operand 105 states and 123 transitions. Second operand 4 states. [2020-08-19 02:31:57,055 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:31:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:31:57,625 INFO L93 Difference]: Finished difference Result 182 states and 222 transitions. [2020-08-19 02:31:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:31:57,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:31:57,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:31:57,628 INFO L225 Difference]: With dead ends: 182 [2020-08-19 02:31:57,629 INFO L226 Difference]: Without dead ends: 119 [2020-08-19 02:31:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:31:57,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-19 02:31:57,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-19 02:31:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 02:31:57,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-08-19 02:31:57,664 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 47 [2020-08-19 02:31:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:31:57,664 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-08-19 02:31:57,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:31:57,665 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-08-19 02:31:57,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 02:31:57,667 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:31:57,667 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:31:57,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:31:57,668 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:31:57,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:31:57,668 INFO L82 PathProgramCache]: Analyzing trace with hash 268149636, now seen corresponding path program 1 times [2020-08-19 02:31:57,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:31:57,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96481892] [2020-08-19 02:31:57,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:31:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:57,965 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:31:57,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:31:57,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:31:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:31:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:31:58,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:31:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:31:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:31:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:31:58,059 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 02:31:58,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96481892] [2020-08-19 02:31:58,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:31:58,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:31:58,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613000698] [2020-08-19 02:31:58,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:31:58,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:31:58,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:31:58,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:31:58,064 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 8 states. [2020-08-19 02:31:58,390 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:31:58,701 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:31:58,944 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:31:59,219 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:00,053 INFO L93 Difference]: Finished difference Result 191 states and 236 transitions. [2020-08-19 02:32:00,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:32:00,053 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 02:32:00,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:00,055 INFO L225 Difference]: With dead ends: 191 [2020-08-19 02:32:00,055 INFO L226 Difference]: Without dead ends: 119 [2020-08-19 02:32:00,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 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 02:32:00,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-08-19 02:32:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 96. [2020-08-19 02:32:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-19 02:32:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 110 transitions. [2020-08-19 02:32:00,107 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 110 transitions. Word has length 51 [2020-08-19 02:32:00,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:00,108 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 110 transitions. [2020-08-19 02:32:00,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:00,108 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 110 transitions. [2020-08-19 02:32:00,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:32:00,113 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:00,113 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] [2020-08-19 02:32:00,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:32:00,113 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:00,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:00,114 INFO L82 PathProgramCache]: Analyzing trace with hash -169231603, now seen corresponding path program 1 times [2020-08-19 02:32:00,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:00,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693650892] [2020-08-19 02:32:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,439 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:32:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-19 02:32:00,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-19 02:32:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:00,517 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 02:32:00,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693650892] [2020-08-19 02:32:00,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:00,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:32:00,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264482207] [2020-08-19 02:32:00,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:32:00,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:00,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:32:00,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:32:00,520 INFO L87 Difference]: Start difference. First operand 96 states and 110 transitions. Second operand 6 states. [2020-08-19 02:32:00,822 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:01,903 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:02,304 INFO L93 Difference]: Finished difference Result 274 states and 340 transitions. [2020-08-19 02:32:02,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:32:02,305 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 02:32:02,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:02,308 INFO L225 Difference]: With dead ends: 274 [2020-08-19 02:32:02,308 INFO L226 Difference]: Without dead ends: 202 [2020-08-19 02:32:02,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:32:02,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-19 02:32:02,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 161. [2020-08-19 02:32:02,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-08-19 02:32:02,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 185 transitions. [2020-08-19 02:32:02,351 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 185 transitions. Word has length 59 [2020-08-19 02:32:02,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:02,351 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 185 transitions. [2020-08-19 02:32:02,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:32:02,351 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 185 transitions. [2020-08-19 02:32:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 02:32:02,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:02,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:02,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:32:02,354 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:02,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1300839735, now seen corresponding path program 1 times [2020-08-19 02:32:02,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:02,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031542436] [2020-08-19 02:32:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,651 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-19 02:32:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 02:32:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 02:32:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:02,774 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 02:32:02,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031542436] [2020-08-19 02:32:02,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:02,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 02:32:02,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931949530] [2020-08-19 02:32:02,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:32:02,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:02,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:32:02,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:32:02,778 INFO L87 Difference]: Start difference. First operand 161 states and 185 transitions. Second operand 8 states. [2020-08-19 02:32:03,074 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:04,057 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:04,310 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:04,534 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:04,745 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:05,033 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:05,765 INFO L93 Difference]: Finished difference Result 478 states and 600 transitions. [2020-08-19 02:32:05,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:05,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 73 [2020-08-19 02:32:05,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:05,775 INFO L225 Difference]: With dead ends: 478 [2020-08-19 02:32:05,775 INFO L226 Difference]: Without dead ends: 341 [2020-08-19 02:32:05,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:32:05,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2020-08-19 02:32:05,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 277. [2020-08-19 02:32:05,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-19 02:32:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 320 transitions. [2020-08-19 02:32:05,842 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 320 transitions. Word has length 73 [2020-08-19 02:32:05,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:05,845 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 320 transitions. [2020-08-19 02:32:05,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:32:05,845 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 320 transitions. [2020-08-19 02:32:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-08-19 02:32:05,853 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:05,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:05,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:32:05,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:05,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:05,855 INFO L82 PathProgramCache]: Analyzing trace with hash 2135215483, now seen corresponding path program 1 times [2020-08-19 02:32:05,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:05,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536287597] [2020-08-19 02:32:05,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,126 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:06,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:06,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:06,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:06,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:06,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-08-19 02:32:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-08-19 02:32:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:06,277 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 02:32:06,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536287597] [2020-08-19 02:32:06,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:06,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:06,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478812145] [2020-08-19 02:32:06,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:06,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:06,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:06,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:06,281 INFO L87 Difference]: Start difference. First operand 277 states and 320 transitions. Second operand 9 states. [2020-08-19 02:32:06,678 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:07,727 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:07,942 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:08,206 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:08,444 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:08,692 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:09,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:09,377 INFO L93 Difference]: Finished difference Result 380 states and 484 transitions. [2020-08-19 02:32:09,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:32:09,377 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 77 [2020-08-19 02:32:09,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:09,381 INFO L225 Difference]: With dead ends: 380 [2020-08-19 02:32:09,381 INFO L226 Difference]: Without dead ends: 377 [2020-08-19 02:32:09,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:32:09,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2020-08-19 02:32:09,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 277. [2020-08-19 02:32:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2020-08-19 02:32:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 319 transitions. [2020-08-19 02:32:09,438 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 319 transitions. Word has length 77 [2020-08-19 02:32:09,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:09,438 INFO L479 AbstractCegarLoop]: Abstraction has 277 states and 319 transitions. [2020-08-19 02:32:09,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:09,439 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 319 transitions. [2020-08-19 02:32:09,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 02:32:09,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:09,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:09,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:32:09,441 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:09,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:09,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2125508241, now seen corresponding path program 1 times [2020-08-19 02:32:09,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:09,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269052503] [2020-08-19 02:32:09,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,682 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:09,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:09,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:09,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:09,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:09,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:32:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:32:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:09,792 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 02:32:09,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269052503] [2020-08-19 02:32:09,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:09,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 02:32:09,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543169624] [2020-08-19 02:32:09,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:32:09,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:09,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:32:09,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:32:09,795 INFO L87 Difference]: Start difference. First operand 277 states and 319 transitions. Second operand 9 states. [2020-08-19 02:32:10,604 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:32:10,836 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:32:11,061 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:11,282 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:12,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:12,081 INFO L93 Difference]: Finished difference Result 634 states and 793 transitions. [2020-08-19 02:32:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:32:12,082 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-19 02:32:12,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:12,086 INFO L225 Difference]: With dead ends: 634 [2020-08-19 02:32:12,086 INFO L226 Difference]: Without dead ends: 381 [2020-08-19 02:32:12,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-08-19 02:32:12,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 287. [2020-08-19 02:32:12,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-08-19 02:32:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 329 transitions. [2020-08-19 02:32:12,143 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 329 transitions. Word has length 78 [2020-08-19 02:32:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:12,144 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 329 transitions. [2020-08-19 02:32:12,144 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:32:12,144 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 329 transitions. [2020-08-19 02:32:12,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 02:32:12,145 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:12,146 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:12,146 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:32:12,146 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:12,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:12,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1616035151, now seen corresponding path program 1 times [2020-08-19 02:32:12,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:12,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269490907] [2020-08-19 02:32:12,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:12,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,387 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:12,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:32:12,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:32:12,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:12,549 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 02:32:12,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269490907] [2020-08-19 02:32:12,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:12,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-19 02:32:12,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170967668] [2020-08-19 02:32:12,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:32:12,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:12,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:32:12,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:32:12,555 INFO L87 Difference]: Start difference. First operand 287 states and 329 transitions. Second operand 11 states. [2020-08-19 02:32:13,001 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:13,247 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:13,489 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:14,109 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:14,366 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:14,608 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:32:15,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:15,486 INFO L93 Difference]: Finished difference Result 658 states and 831 transitions. [2020-08-19 02:32:15,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:32:15,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 78 [2020-08-19 02:32:15,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:15,490 INFO L225 Difference]: With dead ends: 658 [2020-08-19 02:32:15,490 INFO L226 Difference]: Without dead ends: 395 [2020-08-19 02:32:15,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:32:15,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2020-08-19 02:32:15,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 295. [2020-08-19 02:32:15,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-19 02:32:15,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 337 transitions. [2020-08-19 02:32:15,564 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 337 transitions. Word has length 78 [2020-08-19 02:32:15,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:15,564 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 337 transitions. [2020-08-19 02:32:15,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:32:15,565 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 337 transitions. [2020-08-19 02:32:15,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-19 02:32:15,566 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:15,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:15,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:32:15,567 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:15,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:15,567 INFO L82 PathProgramCache]: Analyzing trace with hash -394068690, now seen corresponding path program 1 times [2020-08-19 02:32:15,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:15,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085189536] [2020-08-19 02:32:15,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,843 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:32:15,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:32:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:32:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:32:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:32:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:32:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:32:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:32:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:32:15,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:32:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:32:15,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-19 02:32:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-19 02:32:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:32:15,965 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 02:32:15,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085189536] [2020-08-19 02:32:15,966 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:32:15,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 02:32:15,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374639119] [2020-08-19 02:32:15,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:32:15,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:32:15,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:32:15,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:32:15,968 INFO L87 Difference]: Start difference. First operand 295 states and 337 transitions. Second operand 7 states. [2020-08-19 02:32:16,275 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:16,769 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:32:18,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:32:18,401 INFO L93 Difference]: Finished difference Result 941 states and 1221 transitions. [2020-08-19 02:32:18,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 02:32:18,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2020-08-19 02:32:18,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:32:18,407 INFO L225 Difference]: With dead ends: 941 [2020-08-19 02:32:18,408 INFO L226 Difference]: Without dead ends: 670 [2020-08-19 02:32:18,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:32:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-08-19 02:32:18,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 571. [2020-08-19 02:32:18,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-19 02:32:18,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 679 transitions. [2020-08-19 02:32:18,547 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 679 transitions. Word has length 78 [2020-08-19 02:32:18,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:32:18,548 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 679 transitions. [2020-08-19 02:32:18,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:32:18,548 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 679 transitions. [2020-08-19 02:32:18,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-19 02:32:18,556 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:32:18,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:32:18,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:32:18,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:32:18,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:32:18,557 INFO L82 PathProgramCache]: Analyzing trace with hash 823271752, now seen corresponding path program 1 times [2020-08-19 02:32:18,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:32:18,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110150109] [2020-08-19 02:32:18,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:32:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:32:18,633 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:32:18,633 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:32:18,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:32:18,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:32:18 BoogieIcfgContainer [2020-08-19 02:32:18,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:32:18,691 INFO L168 Benchmark]: Toolchain (without parser) took 26527.52 ms. Allocated memory was 141.6 MB in the beginning and 618.1 MB in the end (delta: 476.6 MB). Free memory was 104.1 MB in the beginning and 418.9 MB in the end (delta: -314.8 MB). Peak memory consumption was 161.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:18,692 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:32:18,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 645.26 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 175.4 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:18,700 INFO L168 Benchmark]: Boogie Preprocessor took 90.19 ms. Allocated memory is still 205.0 MB. Free memory was 175.1 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:18,702 INFO L168 Benchmark]: RCFGBuilder took 1203.02 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 171.0 MB in the beginning and 199.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:18,704 INFO L168 Benchmark]: TraceAbstraction took 24583.61 ms. Allocated memory was 237.5 MB in the beginning and 618.1 MB in the end (delta: 380.6 MB). Free memory was 199.9 MB in the beginning and 418.9 MB in the end (delta: -219.0 MB). Peak memory consumption was 161.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:32:18,713 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.9 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 645.26 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.9 MB in the beginning and 175.4 MB in the end (delta: -71.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 90.19 ms. Allocated memory is still 205.0 MB. Free memory was 175.1 MB in the beginning and 171.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1203.02 ms. Allocated memory was 205.0 MB in the beginning and 237.5 MB in the end (delta: 32.5 MB). Free memory was 171.0 MB in the beginning and 199.9 MB in the end (delta: -28.9 MB). Peak memory consumption was 82.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 24583.61 ms. Allocated memory was 237.5 MB in the beginning and 618.1 MB in the end (delta: 380.6 MB). Free memory was 199.9 MB in the beginning and 418.9 MB in the end (delta: -219.0 MB). Peak memory consumption was 161.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 410]: 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; [L424] int pumpRunning = 0; [L425] int systemActive = 1; [L683] int cleanupTimeShifts = 4; [L806] int waterLevel = 1; [L807] int methaneLevelCritical = 0; [L756] int retValue_acc ; [L757] int tmp ; [L761] FCALL select_helpers() [L762] FCALL select_features() [L763] CALL, EXPR valid_product() [L674] int retValue_acc ; [L677] retValue_acc = 1 [L678] return (retValue_acc); [L763] RET, EXPR valid_product() [L763] tmp = valid_product() [L765] COND TRUE \read(tmp) [L767] FCALL setup() [L768] CALL runTest() [L750] CALL test() [L581] int splverifierCounter ; [L582] int tmp ; [L583] int tmp___0 ; [L584] int tmp___1 ; [L585] int tmp___2 ; [L588] splverifierCounter = 0 [L590] COND TRUE 1 [L592] COND TRUE splverifierCounter < 4 [L598] tmp = __VERIFIER_nondet_int() [L600] COND TRUE \read(tmp) [L602] CALL waterRise() [L824] COND TRUE waterLevel < 2 [L825] waterLevel = waterLevel + 1 [L602] RET waterRise() [L608] tmp___0 = __VERIFIER_nondet_int() [L610] COND TRUE \read(tmp___0) [L612] CALL changeMethaneLevel() [L836] COND FALSE !(\read(methaneLevelCritical)) [L839] methaneLevelCritical = 1 [L612] RET changeMethaneLevel() [L618] tmp___2 = __VERIFIER_nondet_int() [L620] COND TRUE \read(tmp___2) [L633] CALL timeShift() [L432] COND FALSE !(\read(pumpRunning)) [L439] COND TRUE \read(systemActive) [L441] CALL processEnvironment() [L461] int tmp ; [L464] COND TRUE ! pumpRunning [L466] CALL, EXPR isHighWaterLevel() [L558] int retValue_acc ; [L559] int tmp ; [L560] int tmp___0 ; [L564] CALL, EXPR isHighWaterSensorDry() [L886] int retValue_acc ; [L889] COND FALSE !(waterLevel < 2) [L893] retValue_acc = 0 [L894] return (retValue_acc); [L564] RET, EXPR isHighWaterSensorDry() [L564] tmp = isHighWaterSensorDry() [L566] COND FALSE !(\read(tmp)) [L569] tmp___0 = 1 [L571] retValue_acc = tmp___0 [L572] return (retValue_acc); [L466] RET, EXPR isHighWaterLevel() [L466] tmp = isHighWaterLevel() [L468] COND TRUE \read(tmp) [L470] CALL activatePump() [L489] pumpRunning = 1 [L470] RET activatePump() [L441] RET processEnvironment() [L447] CALL __utac_acc__Specification1_spec__1() [L780] int tmp ; [L781] int tmp___0 ; [L785] CALL, EXPR isMethaneLevelCritical() [L845] int retValue_acc ; [L848] retValue_acc = methaneLevelCritical [L849] return (retValue_acc); [L785] RET, EXPR isMethaneLevelCritical() [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L789] CALL, EXPR isPumpRunning() [L513] int retValue_acc ; [L516] retValue_acc = pumpRunning [L517] return (retValue_acc); [L789] RET, EXPR isPumpRunning() [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) [L793] CALL __automaton_fail() [L410] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 37 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.4s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 19.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 855 SDtfs, 1520 SDslu, 833 SDs, 0 SdLazy, 3982 SolverSat, 920 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 297 GetRequests, 202 SyntacticMatches, 3 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=571occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 574 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 669 NumberOfCodeBlocks, 669 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 578 ConstructedInterpolants, 0 QuantifiedInterpolants, 173318 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...