/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:25:44,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:25:44,851 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:25:44,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:25:44,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:25:44,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:25:44,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:25:44,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:25:44,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:25:44,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:25:44,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:25:44,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:25:44,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:25:44,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:25:44,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:25:44,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:25:44,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:25:44,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:25:44,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:25:44,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:25:44,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:25:44,894 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:25:44,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:25:44,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:25:44,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:25:44,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:25:44,899 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:25:44,900 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:25:44,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:25:44,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:25:44,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:25:44,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:25:44,903 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:25:44,904 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:25:44,905 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:25:44,905 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:25:44,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:25:44,906 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:25:44,906 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:25:44,907 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:25:44,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:25:44,909 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 [2020-08-22 00:25:44,932 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:25:44,932 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:25:44,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:25:44,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:25:44,934 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:25:44,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:25:44,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:25:44,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:25:44,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:25:44,935 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:25:44,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:25:44,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:25:44,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:25:44,935 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:25:44,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:25:44,936 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:25:44,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:25:44,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:25:44,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:25:44,937 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:25:44,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:25:44,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:25:44,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:25:44,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:25:44,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:25:44,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:25:44,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:25:44,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:25:44,939 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:25:44,939 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:25:45,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:25:45,269 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:25:45,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:25:45,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:25:45,274 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:25:45,275 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-08-22 00:25:45,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad9ba397/b55386c0fd8047e991d41bc7d516f413/FLAG8e76292c4 [2020-08-22 00:25:45,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:25:45,889 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product18.cil.c [2020-08-22 00:25:45,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad9ba397/b55386c0fd8047e991d41bc7d516f413/FLAG8e76292c4 [2020-08-22 00:25:46,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ad9ba397/b55386c0fd8047e991d41bc7d516f413 [2020-08-22 00:25:46,187 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:25:46,189 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:25:46,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:25:46,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:25:46,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:25:46,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57d587f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46, skipping insertion in model container [2020-08-22 00:25:46,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:25:46,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:25:46,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:25:46,739 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:25:46,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:25:46,861 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:25:46,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46 WrapperNode [2020-08-22 00:25:46,862 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:25:46,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:25:46,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:25:46,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:25:46,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,901 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (1/1) ... [2020-08-22 00:25:46,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:25:46,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:25:46,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:25:46,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:25:46,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (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 [2020-08-22 00:25:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:25:47,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:25:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 00:25:47,051 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 00:25:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 00:25:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 00:25:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 00:25:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:25:47,052 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 00:25:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 00:25:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 00:25:47,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 00:25:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 00:25:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 00:25:47,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 00:25:47,055 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 00:25:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 00:25:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 00:25:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 00:25:47,056 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 00:25:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 00:25:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 00:25:47,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 00:25:47,058 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 00:25:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 00:25:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:25:47,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 00:25:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:25:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:25:47,059 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 00:25:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 00:25:47,060 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 00:25:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 00:25:47,061 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 00:25:47,062 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 00:25:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 00:25:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:25:47,063 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 00:25:47,064 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 00:25:47,065 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 00:25:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:25:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 00:25:47,066 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 00:25:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:25:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 00:25:47,067 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 00:25:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 00:25:47,068 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 00:25:47,069 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 00:25:47,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:25:48,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:25:48,208 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 00:25:48,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:25:48 BoogieIcfgContainer [2020-08-22 00:25:48,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:25:48,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:25:48,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:25:48,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:25:48,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:25:46" (1/3) ... [2020-08-22 00:25:48,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f38dad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:25:48, skipping insertion in model container [2020-08-22 00:25:48,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:25:46" (2/3) ... [2020-08-22 00:25:48,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f38dad6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:25:48, skipping insertion in model container [2020-08-22 00:25:48,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:25:48" (3/3) ... [2020-08-22 00:25:48,222 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product18.cil.c [2020-08-22 00:25:48,232 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:25:48,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:25:48,255 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:25:48,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:25:48,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:25:48,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:25:48,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:25:48,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:25:48,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:25:48,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:25:48,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:25:48,303 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states. [2020-08-22 00:25:48,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 00:25:48,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:48,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:25:48,314 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:48,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:48,321 INFO L82 PathProgramCache]: Analyzing trace with hash 144675927, now seen corresponding path program 1 times [2020-08-22 00:25:48,330 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:48,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732445980] [2020-08-22 00:25:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:48,966 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:25:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 00:25:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:25:49,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:25:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:25:49,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732445980] [2020-08-22 00:25:49,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:25:49,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:25:49,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396557759] [2020-08-22 00:25:49,062 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:25:49,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:49,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:25:49,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:25:49,081 INFO L87 Difference]: Start difference. First operand 160 states. Second operand 3 states. [2020-08-22 00:25:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:50,142 INFO L93 Difference]: Finished difference Result 268 states and 351 transitions. [2020-08-22 00:25:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:25:50,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 00:25:50,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:50,160 INFO L225 Difference]: With dead ends: 268 [2020-08-22 00:25:50,160 INFO L226 Difference]: Without dead ends: 145 [2020-08-22 00:25:50,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:25:50,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-08-22 00:25:50,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 114. [2020-08-22 00:25:50,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-08-22 00:25:50,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2020-08-22 00:25:50,265 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 52 [2020-08-22 00:25:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:50,267 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2020-08-22 00:25:50,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:25:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2020-08-22 00:25:50,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 00:25:50,274 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:50,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:25:50,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:25:50,276 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:50,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:50,277 INFO L82 PathProgramCache]: Analyzing trace with hash -274604967, now seen corresponding path program 1 times [2020-08-22 00:25:50,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:50,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366774542] [2020-08-22 00:25:50,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,645 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:25:50,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:50,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:50,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:50,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:50,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 00:25:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 00:25:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 00:25:50,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:25:50,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366774542] [2020-08-22 00:25:50,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:25:50,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:25:50,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474077368] [2020-08-22 00:25:50,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:25:50,698 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:50,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:25:50,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:25:50,699 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand 4 states. [2020-08-22 00:25:51,143 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 00:25:51,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:51,844 INFO L93 Difference]: Finished difference Result 197 states and 238 transitions. [2020-08-22 00:25:51,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 00:25:51,845 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 00:25:51,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:51,848 INFO L225 Difference]: With dead ends: 197 [2020-08-22 00:25:51,848 INFO L226 Difference]: Without dead ends: 129 [2020-08-22 00:25:51,850 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 00:25:51,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-22 00:25:51,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2020-08-22 00:25:51,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 00:25:51,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2020-08-22 00:25:51,888 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 53 [2020-08-22 00:25:51,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:51,889 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2020-08-22 00:25:51,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:25:51,889 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2020-08-22 00:25:51,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 00:25:51,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:51,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:25:51,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:25:51,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:51,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:51,893 INFO L82 PathProgramCache]: Analyzing trace with hash 245025236, now seen corresponding path program 1 times [2020-08-22 00:25:51,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:51,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948778189] [2020-08-22 00:25:51,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,327 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:25:52,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 00:25:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 00:25:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:25:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:25:52,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948778189] [2020-08-22 00:25:52,415 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:25:52,415 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:25:52,416 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347687007] [2020-08-22 00:25:52,416 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:25:52,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:52,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:25:52,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:25:52,417 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 8 states. [2020-08-22 00:25:52,798 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:25:53,085 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:53,334 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:53,561 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:54,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:54,540 INFO L93 Difference]: Finished difference Result 210 states and 256 transitions. [2020-08-22 00:25:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 00:25:54,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 58 [2020-08-22 00:25:54,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:54,543 INFO L225 Difference]: With dead ends: 210 [2020-08-22 00:25:54,544 INFO L226 Difference]: Without dead ends: 129 [2020-08-22 00:25:54,545 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 00:25:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-08-22 00:25:54,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2020-08-22 00:25:54,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-08-22 00:25:54,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 119 transitions. [2020-08-22 00:25:54,578 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 119 transitions. Word has length 58 [2020-08-22 00:25:54,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:54,579 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 119 transitions. [2020-08-22 00:25:54,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:25:54,579 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 119 transitions. [2020-08-22 00:25:54,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-08-22 00:25:54,581 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:54,581 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] [2020-08-22 00:25:54,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 00:25:54,581 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -1490172925, now seen corresponding path program 1 times [2020-08-22 00:25:54,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:54,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760802148] [2020-08-22 00:25:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,883 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:25:54,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:54,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 00:25:54,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 00:25:54,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 00:25:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-08-22 00:25:54,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:25:54,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760802148] [2020-08-22 00:25:54,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:25:54,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 00:25:54,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985810252] [2020-08-22 00:25:54,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 00:25:54,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:54,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 00:25:54,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 00:25:54,970 INFO L87 Difference]: Start difference. First operand 105 states and 119 transitions. Second operand 8 states. [2020-08-22 00:25:55,301 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:25:56,483 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:56,782 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:57,024 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 00:25:57,294 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:25:57,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:57,886 INFO L93 Difference]: Finished difference Result 314 states and 408 transitions. [2020-08-22 00:25:57,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 00:25:57,887 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2020-08-22 00:25:57,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:57,891 INFO L225 Difference]: With dead ends: 314 [2020-08-22 00:25:57,891 INFO L226 Difference]: Without dead ends: 233 [2020-08-22 00:25:57,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 00:25:57,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2020-08-22 00:25:57,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 184. [2020-08-22 00:25:57,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-08-22 00:25:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2020-08-22 00:25:57,940 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 66 [2020-08-22 00:25:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:57,941 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2020-08-22 00:25:57,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 00:25:57,941 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2020-08-22 00:25:57,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 00:25:57,943 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:57,943 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] [2020-08-22 00:25:57,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 00:25:57,944 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:57,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:57,944 INFO L82 PathProgramCache]: Analyzing trace with hash -123378135, now seen corresponding path program 1 times [2020-08-22 00:25:57,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:57,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388027475] [2020-08-22 00:25:57,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:57,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,237 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 00:25:58,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:25:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 00:25:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 00:25:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 00:25:58,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 00:25:58,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 00:25:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 00:25:58,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 00:25:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 00:25:58,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 00:25:58,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-22 00:25:58,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:25:58,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:25:58,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388027475] [2020-08-22 00:25:58,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:25:58,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 00:25:58,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037274241] [2020-08-22 00:25:58,323 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 00:25:58,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:25:58,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 00:25:58,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 00:25:58,324 INFO L87 Difference]: Start difference. First operand 184 states and 215 transitions. Second operand 6 states. [2020-08-22 00:25:58,681 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 00:25:59,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:25:59,286 INFO L93 Difference]: Finished difference Result 306 states and 373 transitions. [2020-08-22 00:25:59,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 00:25:59,287 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-22 00:25:59,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:25:59,289 INFO L225 Difference]: With dead ends: 306 [2020-08-22 00:25:59,289 INFO L226 Difference]: Without dead ends: 146 [2020-08-22 00:25:59,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-08-22 00:25:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-08-22 00:25:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 133. [2020-08-22 00:25:59,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 00:25:59,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 148 transitions. [2020-08-22 00:25:59,324 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 148 transitions. Word has length 70 [2020-08-22 00:25:59,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:25:59,325 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 148 transitions. [2020-08-22 00:25:59,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 00:25:59,325 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 148 transitions. [2020-08-22 00:25:59,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-22 00:25:59,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:25:59,327 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] [2020-08-22 00:25:59,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 00:25:59,327 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:25:59,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:25:59,328 INFO L82 PathProgramCache]: Analyzing trace with hash 2126179389, now seen corresponding path program 1 times [2020-08-22 00:25:59,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:25:59,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403245749] [2020-08-22 00:25:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:25:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:25:59,397 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:25:59,397 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:25:59,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 00:25:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:25:59 BoogieIcfgContainer [2020-08-22 00:25:59,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:25:59,426 INFO L168 Benchmark]: Toolchain (without parser) took 13237.30 ms. Allocated memory was 138.4 MB in the beginning and 444.1 MB in the end (delta: 305.7 MB). Free memory was 100.3 MB in the beginning and 277.4 MB in the end (delta: -177.1 MB). Peak memory consumption was 128.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,427 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.56 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 169.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,429 INFO L168 Benchmark]: Boogie Preprocessor took 100.69 ms. Allocated memory is still 200.8 MB. Free memory was 169.1 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,430 INFO L168 Benchmark]: RCFGBuilder took 1249.74 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 165.0 MB in the beginning and 197.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,431 INFO L168 Benchmark]: TraceAbstraction took 11209.87 ms. Allocated memory was 232.3 MB in the beginning and 444.1 MB in the end (delta: 211.8 MB). Free memory was 195.8 MB in the beginning and 277.4 MB in the end (delta: -81.6 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:25:59,434 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.56 ms. Allocated memory was 138.4 MB in the beginning and 200.8 MB in the end (delta: 62.4 MB). Free memory was 100.1 MB in the beginning and 169.1 MB in the end (delta: -69.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.69 ms. Allocated memory is still 200.8 MB. Free memory was 169.1 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 4.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1249.74 ms. Allocated memory was 200.8 MB in the beginning and 232.3 MB in the end (delta: 31.5 MB). Free memory was 165.0 MB in the beginning and 197.3 MB in the end (delta: -32.3 MB). Peak memory consumption was 85.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11209.87 ms. Allocated memory was 232.3 MB in the beginning and 444.1 MB in the end (delta: 211.8 MB). Free memory was 195.8 MB in the beginning and 277.4 MB in the end (delta: -81.6 MB). Peak memory consumption was 130.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 910]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L407] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L608] int pumpRunning = 0; [L609] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L862] int retValue_acc ; [L865] retValue_acc = 1 [L866] return (retValue_acc); [L128] RET, EXPR valid_product() [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) [L132] FCALL setup() [L133] CALL runTest() [L112] CALL test() [L770] int splverifierCounter ; [L771] int tmp ; [L772] int tmp___0 ; [L773] int tmp___1 ; [L774] int tmp___2 ; [L777] splverifierCounter = 0 [L779] COND TRUE 1 [L781] COND TRUE splverifierCounter < 4 [L787] tmp = __VERIFIER_nondet_int() [L789] COND TRUE \read(tmp) [L791] CALL waterRise() [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 [L791] RET waterRise() [L797] tmp___0 = __VERIFIER_nondet_int() [L799] COND FALSE !(\read(tmp___0)) [L807] tmp___2 = __VERIFIER_nondet_int() [L809] COND FALSE !(\read(tmp___2)) [L815] tmp___1 = __VERIFIER_nondet_int() [L817] COND TRUE \read(tmp___1) [L824] CALL timeShift() [L616] COND FALSE !(\read(pumpRunning)) [L623] COND TRUE \read(systemActive) [L625] CALL processEnvironment() [L645] int tmp ; [L648] COND FALSE !(\read(pumpRunning)) [L663] FCALL processEnvironment__wrappee__base() [L625] RET processEnvironment() [L631] CALL __utac_acc__Specification3_spec__1() [L873] int tmp ; [L874] int tmp___0 ; [L875] int tmp___1 ; [L879] CALL, EXPR isMethaneLevelCritical() [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); [L879] RET, EXPR isMethaneLevelCritical() [L879] tmp = isMethaneLevelCritical() [L881] COND FALSE !(\read(tmp)) [L885] CALL, EXPR getWaterLevel() [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); [L885] RET, EXPR getWaterLevel() [L885] tmp___0 = getWaterLevel() [L887] COND TRUE tmp___0 == 2 [L889] CALL, EXPR isPumpRunning() [L697] int retValue_acc ; [L700] retValue_acc = pumpRunning [L701] return (retValue_acc); [L889] RET, EXPR isPumpRunning() [L889] tmp___1 = isPumpRunning() [L891] COND FALSE !(\read(tmp___1)) [L895] CALL __automaton_fail() [L910] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 221 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.1s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 8.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 466 SDtfs, 633 SDslu, 262 SDs, 0 SdLazy, 1390 SolverSat, 396 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 134 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 141 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 369 NumberOfCodeBlocks, 369 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 294 ConstructedInterpolants, 0 QuantifiedInterpolants, 83938 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...