/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=1.0 --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_spec1_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:59:32,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:59:32,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:59:32,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:59:32,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:59:32,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:59:32,953 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:59:32,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:59:32,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:59:32,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:59:32,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:59:32,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:59:32,960 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:59:32,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:59:32,963 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:59:32,964 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:59:32,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:59:32,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:59:32,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:59:32,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:59:32,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:59:32,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:59:32,974 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:59:32,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:59:32,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:59:32,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:59:32,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:59:32,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:59:32,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:59:32,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:59:32,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:59:32,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:59:32,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:59:32,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:59:32,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:59:32,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:59:32,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:59:32,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:59:32,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:59:32,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:59:32,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:59:32,988 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 01:59:33,010 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:59:33,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:59:33,011 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:59:33,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:59:33,012 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:59:33,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:59:33,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:59:33,012 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:59:33,013 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:59:33,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:59:33,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:59:33,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:59:33,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:59:33,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:59:33,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:59:33,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:59:33,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:59:33,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:59:33,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:59:33,017 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=1.0;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=1.0;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=1.0;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=1.0;log-additional-information=true; [2020-08-22 01:59:33,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:59:33,368 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:59:33,372 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:59:33,373 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:59:33,375 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:59:33,375 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-22 01:59:33,436 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c1df23a/9fecea7d844f4459a436d6bdc8392cc0/FLAG181a15047 [2020-08-22 01:59:33,887 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:59:33,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product34.cil.c [2020-08-22 01:59:33,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c1df23a/9fecea7d844f4459a436d6bdc8392cc0/FLAG181a15047 [2020-08-22 01:59:34,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49c1df23a/9fecea7d844f4459a436d6bdc8392cc0 [2020-08-22 01:59:34,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:59:34,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:59:34,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:34,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:59:34,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:59:34,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f8eaaba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34, skipping insertion in model container [2020-08-22 01:59:34,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:59:34,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:59:34,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:34,700 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:59:34,813 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:59:34,847 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:59:34,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34 WrapperNode [2020-08-22 01:59:34,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:59:34,849 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:59:34,849 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:59:34,849 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:59:34,875 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:34,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (1/1) ... [2020-08-22 01:59:35,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:59:35,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:59:35,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:59:35,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:59:35,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (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 01:59:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:59:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:59:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:35,082 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:35,083 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 01:59:35,084 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 01:59:35,085 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 01:59:35,086 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 01:59:35,087 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 01:59:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 01:59:35,088 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 01:59:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:59:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:59:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 01:59:35,088 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 01:59:35,089 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 01:59:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 01:59:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 01:59:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 01:59:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 01:59:35,090 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:59:35,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 01:59:35,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 01:59:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 01:59:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 01:59:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 01:59:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 01:59:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:59:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 01:59:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:59:36,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:59:36,112 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 01:59:36,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:36 BoogieIcfgContainer [2020-08-22 01:59:36,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:59:36,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:59:36,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:59:36,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:59:36,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:59:34" (1/3) ... [2020-08-22 01:59:36,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ace298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:36, skipping insertion in model container [2020-08-22 01:59:36,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:59:34" (2/3) ... [2020-08-22 01:59:36,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75ace298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:59:36, skipping insertion in model container [2020-08-22 01:59:36,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:59:36" (3/3) ... [2020-08-22 01:59:36,126 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product34.cil.c [2020-08-22 01:59:36,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:59:36,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:59:36,162 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:59:36,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:59:36,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:59:36,190 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:59:36,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:59:36,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:59:36,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:59:36,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:59:36,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:59:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2020-08-22 01:59:36,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 01:59:36,223 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:36,224 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] [2020-08-22 01:59:36,225 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:36,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:36,231 INFO L82 PathProgramCache]: Analyzing trace with hash 591069479, now seen corresponding path program 1 times [2020-08-22 01:59:36,240 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:36,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237456428] [2020-08-22 01:59:36,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:36,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,907 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:36,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:36,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 01:59:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:59:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:37,003 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 01:59:37,004 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237456428] [2020-08-22 01:59:37,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:37,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:59:37,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53865979] [2020-08-22 01:59:37,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:59:37,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:37,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:59:37,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:59:37,035 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 3 states. [2020-08-22 01:59:38,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:38,077 INFO L93 Difference]: Finished difference Result 258 states and 341 transitions. [2020-08-22 01:59:38,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:59:38,080 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 01:59:38,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:38,094 INFO L225 Difference]: With dead ends: 258 [2020-08-22 01:59:38,094 INFO L226 Difference]: Without dead ends: 140 [2020-08-22 01:59:38,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 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 01:59:38,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-08-22 01:59:38,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 109. [2020-08-22 01:59:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-22 01:59:38,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2020-08-22 01:59:38,217 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 46 [2020-08-22 01:59:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:38,218 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2020-08-22 01:59:38,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:59:38,219 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2020-08-22 01:59:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 01:59:38,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:38,224 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] [2020-08-22 01:59:38,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:59:38,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:38,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:38,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1158422735, now seen corresponding path program 1 times [2020-08-22 01:59:38,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:38,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331736029] [2020-08-22 01:59:38,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:38,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,596 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:38,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:38,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:38,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:38,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 01:59:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 01:59:38,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:38,640 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 01:59:38,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331736029] [2020-08-22 01:59:38,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:38,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:59:38,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25939890] [2020-08-22 01:59:38,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:59:38,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:38,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:59:38,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:59:38,644 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand 4 states. [2020-08-22 01:59:39,105 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:39,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:39,805 INFO L93 Difference]: Finished difference Result 187 states and 228 transitions. [2020-08-22 01:59:39,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 01:59:39,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 01:59:39,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:39,808 INFO L225 Difference]: With dead ends: 187 [2020-08-22 01:59:39,808 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 01:59:39,810 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 [2020-08-22 01:59:39,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 01:59:39,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 01:59:39,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 01:59:39,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 115 transitions. [2020-08-22 01:59:39,843 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 115 transitions. Word has length 47 [2020-08-22 01:59:39,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:39,844 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 115 transitions. [2020-08-22 01:59:39,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:59:39,844 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 115 transitions. [2020-08-22 01:59:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 01:59:39,846 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:39,846 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 01:59:39,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:59:39,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:39,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:39,847 INFO L82 PathProgramCache]: Analyzing trace with hash -870171294, now seen corresponding path program 1 times [2020-08-22 01:59:39,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:39,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1007922748] [2020-08-22 01:59:39,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,185 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:40,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:40,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 01:59:40,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 01:59:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:40,286 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 01:59:40,287 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1007922748] [2020-08-22 01:59:40,287 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:40,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:40,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046086113] [2020-08-22 01:59:40,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:40,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:40,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:40,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:40,291 INFO L87 Difference]: Start difference. First operand 100 states and 115 transitions. Second operand 8 states. [2020-08-22 01:59:40,696 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:40,995 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:41,249 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:41,500 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:42,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:42,500 INFO L93 Difference]: Finished difference Result 200 states and 246 transitions. [2020-08-22 01:59:42,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 01:59:42,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-22 01:59:42,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:42,504 INFO L225 Difference]: With dead ends: 200 [2020-08-22 01:59:42,504 INFO L226 Difference]: Without dead ends: 124 [2020-08-22 01:59:42,506 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-22 01:59:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-08-22 01:59:42,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 100. [2020-08-22 01:59:42,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-08-22 01:59:42,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-08-22 01:59:42,536 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 52 [2020-08-22 01:59:42,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:42,537 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-08-22 01:59:42,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:42,537 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-08-22 01:59:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 01:59:42,539 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:42,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:42,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:59:42,540 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1248327953, now seen corresponding path program 1 times [2020-08-22 01:59:42,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:42,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1267655392] [2020-08-22 01:59:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,824 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:42,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:42,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:59:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:42,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-08-22 01:59:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-22 01:59:42,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:42,920 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 01:59:42,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1267655392] [2020-08-22 01:59:42,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:42,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 01:59:42,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468693538] [2020-08-22 01:59:42,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 01:59:42,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:42,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 01:59:42,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 01:59:42,923 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 6 states. [2020-08-22 01:59:43,251 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:44,373 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:44,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:44,823 INFO L93 Difference]: Finished difference Result 288 states and 356 transitions. [2020-08-22 01:59:44,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 01:59:44,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 01:59:44,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:44,829 INFO L225 Difference]: With dead ends: 288 [2020-08-22 01:59:44,832 INFO L226 Difference]: Without dead ends: 212 [2020-08-22 01:59:44,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-08-22 01:59:44,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-08-22 01:59:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 169. [2020-08-22 01:59:44,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-08-22 01:59:44,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 193 transitions. [2020-08-22 01:59:44,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 193 transitions. Word has length 60 [2020-08-22 01:59:44,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:44,883 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 193 transitions. [2020-08-22 01:59:44,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 01:59:44,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 193 transitions. [2020-08-22 01:59:44,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-22 01:59:44,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:44,885 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] [2020-08-22 01:59:44,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 01:59:44,885 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:44,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:44,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1574039554, now seen corresponding path program 1 times [2020-08-22 01:59:44,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:44,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704158901] [2020-08-22 01:59:44,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,244 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:45,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:45,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 01:59:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:45,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-08-22 01:59:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-08-22 01:59:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 01:59:45,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704158901] [2020-08-22 01:59:45,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:45,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 01:59:45,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786815768] [2020-08-22 01:59:45,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 01:59:45,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:45,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 01:59:45,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 01:59:45,319 INFO L87 Difference]: Start difference. First operand 169 states and 193 transitions. Second operand 8 states. [2020-08-22 01:59:45,686 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:46,759 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:47,021 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:47,257 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:47,472 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:47,753 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:48,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:48,405 INFO L93 Difference]: Finished difference Result 505 states and 630 transitions. [2020-08-22 01:59:48,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:59:48,406 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 74 [2020-08-22 01:59:48,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:48,410 INFO L225 Difference]: With dead ends: 505 [2020-08-22 01:59:48,410 INFO L226 Difference]: Without dead ends: 360 [2020-08-22 01:59:48,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-22 01:59:48,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2020-08-22 01:59:48,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 293. [2020-08-22 01:59:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 01:59:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 336 transitions. [2020-08-22 01:59:48,483 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 336 transitions. Word has length 74 [2020-08-22 01:59:48,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:48,484 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 336 transitions. [2020-08-22 01:59:48,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 01:59:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 336 transitions. [2020-08-22 01:59:48,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 01:59:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:48,486 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] [2020-08-22 01:59:48,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 01:59:48,487 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:48,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash -133122882, now seen corresponding path program 1 times [2020-08-22 01:59:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:48,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518307029] [2020-08-22 01:59:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,742 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:59:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 01:59:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 01:59:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:48,850 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 01:59:48,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518307029] [2020-08-22 01:59:48,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:48,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:48,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375594527] [2020-08-22 01:59:48,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:48,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:48,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:48,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:48,853 INFO L87 Difference]: Start difference. First operand 293 states and 336 transitions. Second operand 9 states. [2020-08-22 01:59:49,208 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:50,252 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:50,463 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:50,726 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:50,991 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:51,224 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:51,820 INFO L93 Difference]: Finished difference Result 402 states and 512 transitions. [2020-08-22 01:59:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 01:59:51,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 78 [2020-08-22 01:59:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:51,826 INFO L225 Difference]: With dead ends: 402 [2020-08-22 01:59:51,826 INFO L226 Difference]: Without dead ends: 399 [2020-08-22 01:59:51,827 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 01:59:51,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2020-08-22 01:59:51,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 293. [2020-08-22 01:59:51,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-08-22 01:59:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 335 transitions. [2020-08-22 01:59:51,890 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 335 transitions. Word has length 78 [2020-08-22 01:59:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:51,890 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 335 transitions. [2020-08-22 01:59:51,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:59:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 335 transitions. [2020-08-22 01:59:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 01:59:51,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:51,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 01:59:51,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 01:59:51,893 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:51,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1769050262, now seen corresponding path program 1 times [2020-08-22 01:59:51,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:51,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76576550] [2020-08-22 01:59:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,147 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:52,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:52,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:52,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:52,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:59:52,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 01:59:52,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:59:52,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:52,266 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 01:59:52,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76576550] [2020-08-22 01:59:52,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:52,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 01:59:52,267 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177708410] [2020-08-22 01:59:52,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 01:59:52,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:52,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 01:59:52,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 01:59:52,269 INFO L87 Difference]: Start difference. First operand 293 states and 335 transitions. Second operand 9 states. [2020-08-22 01:59:53,260 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 01:59:53,496 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 01:59:53,727 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:53,951 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:54,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:54,800 INFO L93 Difference]: Finished difference Result 672 states and 837 transitions. [2020-08-22 01:59:54,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 01:59:54,801 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 79 [2020-08-22 01:59:54,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:54,810 INFO L225 Difference]: With dead ends: 672 [2020-08-22 01:59:54,810 INFO L226 Difference]: Without dead ends: 403 [2020-08-22 01:59:54,815 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 [2020-08-22 01:59:54,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-08-22 01:59:54,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 303. [2020-08-22 01:59:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-08-22 01:59:54,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 345 transitions. [2020-08-22 01:59:54,896 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 345 transitions. Word has length 79 [2020-08-22 01:59:54,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:54,897 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 345 transitions. [2020-08-22 01:59:54,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 01:59:54,897 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 345 transitions. [2020-08-22 01:59:54,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 01:59:54,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:54,898 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] [2020-08-22 01:59:54,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 01:59:54,899 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:54,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:54,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1259577172, now seen corresponding path program 1 times [2020-08-22 01:59:54,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:54,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402872687] [2020-08-22 01:59:54,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,152 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:55,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:55,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:55,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:59:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 01:59:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:59:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:55,304 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 01:59:55,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1402872687] [2020-08-22 01:59:55,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:55,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-22 01:59:55,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750063146] [2020-08-22 01:59:55,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 01:59:55,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:55,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 01:59:55,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-22 01:59:55,309 INFO L87 Difference]: Start difference. First operand 303 states and 345 transitions. Second operand 11 states. [2020-08-22 01:59:55,856 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:56,096 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:56,324 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:56,937 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:57,188 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:57,429 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 01:59:58,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:59:58,313 INFO L93 Difference]: Finished difference Result 696 states and 875 transitions. [2020-08-22 01:59:58,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 01:59:58,314 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-08-22 01:59:58,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:59:58,330 INFO L225 Difference]: With dead ends: 696 [2020-08-22 01:59:58,331 INFO L226 Difference]: Without dead ends: 417 [2020-08-22 01:59:58,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 01:59:58,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-22 01:59:58,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 311. [2020-08-22 01:59:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-08-22 01:59:58,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 353 transitions. [2020-08-22 01:59:58,388 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 353 transitions. Word has length 79 [2020-08-22 01:59:58,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:59:58,388 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 353 transitions. [2020-08-22 01:59:58,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 01:59:58,389 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 353 transitions. [2020-08-22 01:59:58,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-22 01:59:58,390 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:59:58,390 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] [2020-08-22 01:59:58,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 01:59:58,391 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:59:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:59:58,391 INFO L82 PathProgramCache]: Analyzing trace with hash -750526669, now seen corresponding path program 1 times [2020-08-22 01:59:58,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:59:58,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348633886] [2020-08-22 01:59:58,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:59:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,634 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 01:59:58,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:59:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 01:59:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 01:59:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 01:59:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 01:59:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 01:59:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 01:59:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 01:59:58,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 01:59:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 01:59:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-22 01:59:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 01:59:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:59:58,751 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 01:59:58,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348633886] [2020-08-22 01:59:58,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:59:58,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 01:59:58,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919874895] [2020-08-22 01:59:58,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 01:59:58,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:59:58,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 01:59:58,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 01:59:58,754 INFO L87 Difference]: Start difference. First operand 311 states and 353 transitions. Second operand 7 states. [2020-08-22 01:59:59,128 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 01:59:59,644 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 02:00:01,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:00:01,684 INFO L93 Difference]: Finished difference Result 1018 states and 1317 transitions. [2020-08-22 02:00:01,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 02:00:01,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 79 [2020-08-22 02:00:01,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:00:01,692 INFO L225 Difference]: With dead ends: 1018 [2020-08-22 02:00:01,692 INFO L226 Difference]: Without dead ends: 731 [2020-08-22 02:00:01,694 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-22 02:00:01,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2020-08-22 02:00:01,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 611. [2020-08-22 02:00:01,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-08-22 02:00:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 719 transitions. [2020-08-22 02:00:01,834 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 719 transitions. Word has length 79 [2020-08-22 02:00:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:00:01,835 INFO L479 AbstractCegarLoop]: Abstraction has 611 states and 719 transitions. [2020-08-22 02:00:01,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 02:00:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 719 transitions. [2020-08-22 02:00:01,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-08-22 02:00:01,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:00:01,840 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, 1] [2020-08-22 02:00:01,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 02:00:01,840 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:00:01,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:00:01,841 INFO L82 PathProgramCache]: Analyzing trace with hash 893739545, now seen corresponding path program 1 times [2020-08-22 02:00:01,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:00:01,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082148681] [2020-08-22 02:00:01,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:00:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:00:01,915 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:00:01,916 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:00:01,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 02:00:01,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:00:01 BoogieIcfgContainer [2020-08-22 02:00:01,961 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:00:01,967 INFO L168 Benchmark]: Toolchain (without parser) took 27750.99 ms. Allocated memory was 139.5 MB in the beginning and 589.3 MB in the end (delta: 449.8 MB). Free memory was 101.2 MB in the beginning and 200.3 MB in the end (delta: -99.0 MB). Peak memory consumption was 350.8 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:01,967 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:00:01,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 173.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:01,975 INFO L168 Benchmark]: Boogie Preprocessor took 153.37 ms. Allocated memory is still 202.9 MB. Free memory was 173.1 MB in the beginning and 167.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:01,976 INFO L168 Benchmark]: RCFGBuilder took 1115.17 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 167.9 MB in the beginning and 200.4 MB in the end (delta: -32.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:01,979 INFO L168 Benchmark]: TraceAbstraction took 25842.41 ms. Allocated memory was 235.4 MB in the beginning and 589.3 MB in the end (delta: 353.9 MB). Free memory was 198.9 MB in the beginning and 200.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 352.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:00:01,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 634.88 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 173.1 MB in the end (delta: -72.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.37 ms. Allocated memory is still 202.9 MB. Free memory was 173.1 MB in the beginning and 167.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1115.17 ms. Allocated memory was 202.9 MB in the beginning and 235.4 MB in the end (delta: 32.5 MB). Free memory was 167.9 MB in the beginning and 200.4 MB in the end (delta: -32.5 MB). Peak memory consumption was 85.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25842.41 ms. Allocated memory was 235.4 MB in the beginning and 589.3 MB in the end (delta: 353.9 MB). Free memory was 198.9 MB in the beginning and 200.3 MB in the end (delta: -1.3 MB). Peak memory consumption was 352.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 514]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L313] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L524] int waterLevel = 1; [L525] int methaneLevelCritical = 0; [L689] int pumpRunning = 0; [L690] int systemActive = 1; [L121] int retValue_acc ; [L122] int tmp ; [L126] FCALL select_helpers() [L127] FCALL select_features() [L128] CALL, EXPR valid_product() [L902] int retValue_acc ; [L905] retValue_acc = 1 [L906] 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() [L620] int splverifierCounter ; [L621] int tmp ; [L622] int tmp___0 ; [L623] int tmp___1 ; [L624] int tmp___2 ; [L627] splverifierCounter = 0 [L629] COND TRUE 1 [L631] COND TRUE splverifierCounter < 4 [L637] tmp = __VERIFIER_nondet_int() [L639] COND TRUE \read(tmp) [L641] CALL waterRise() [L542] COND TRUE waterLevel < 2 [L543] waterLevel = waterLevel + 1 [L641] RET waterRise() [L647] tmp___0 = __VERIFIER_nondet_int() [L649] COND TRUE \read(tmp___0) [L651] CALL changeMethaneLevel() [L554] COND FALSE !(\read(methaneLevelCritical)) [L557] methaneLevelCritical = 1 [L651] RET changeMethaneLevel() [L657] tmp___2 = __VERIFIER_nondet_int() [L659] COND FALSE !(\read(tmp___2)) [L665] tmp___1 = __VERIFIER_nondet_int() [L667] COND TRUE \read(tmp___1) [L674] CALL timeShift() [L697] COND FALSE !(\read(pumpRunning)) [L704] COND TRUE \read(systemActive) [L706] CALL processEnvironment() [L726] int tmp ; [L729] COND TRUE ! pumpRunning [L731] CALL, EXPR isHighWaterLevel() [L823] int retValue_acc ; [L824] int tmp ; [L825] int tmp___0 ; [L829] CALL, EXPR isHighWaterSensorDry() [L604] int retValue_acc ; [L607] COND FALSE !(waterLevel < 2) [L611] retValue_acc = 0 [L612] return (retValue_acc); [L829] RET, EXPR isHighWaterSensorDry() [L829] tmp = isHighWaterSensorDry() [L831] COND FALSE !(\read(tmp)) [L834] tmp___0 = 1 [L836] retValue_acc = tmp___0 [L837] return (retValue_acc); [L731] RET, EXPR isHighWaterLevel() [L731] tmp = isHighWaterLevel() [L733] COND TRUE \read(tmp) [L735] CALL activatePump() [L754] pumpRunning = 1 [L735] RET activatePump() [L706] RET processEnvironment() [L712] CALL __utac_acc__Specification1_spec__1() [L851] int tmp ; [L852] int tmp___0 ; [L856] CALL, EXPR isMethaneLevelCritical() [L563] int retValue_acc ; [L566] retValue_acc = methaneLevelCritical [L567] return (retValue_acc); [L856] RET, EXPR isMethaneLevelCritical() [L856] tmp = isMethaneLevelCritical() [L858] COND TRUE \read(tmp) [L860] CALL, EXPR isPumpRunning() [L778] int retValue_acc ; [L781] retValue_acc = pumpRunning [L782] return (retValue_acc); [L860] RET, EXPR isPumpRunning() [L860] tmp___0 = isPumpRunning() [L862] COND TRUE \read(tmp___0) [L864] CALL __automaton_fail() [L514] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 38 procedures, 219 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 25.7s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 20.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 1722 SDslu, 874 SDs, 0 SdLazy, 4211 SolverSat, 1158 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 301 GetRequests, 205 SyntacticMatches, 3 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred 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: 0.6s AutomataMinimizationTime, 9 MinimizatonAttempts, 621 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 677 NumberOfCodeBlocks, 677 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 585 ConstructedInterpolants, 0 QuantifiedInterpolants, 176723 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...