/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:41:13,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:41:13,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:41:13,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:41:13,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:41:13,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:41:13,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:41:13,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:41:13,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:41:13,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:41:13,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:41:13,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:41:13,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:41:13,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:41:13,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:41:13,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:41:14,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:41:14,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:41:14,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:41:14,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:41:14,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:41:14,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:41:14,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:41:14,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:41:14,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:41:14,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:41:14,014 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:41:14,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:41:14,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:41:14,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:41:14,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:41:14,018 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:41:14,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:41:14,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:41:14,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:41:14,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:41:14,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:41:14,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:41:14,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:41:14,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:41:14,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:41:14,025 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 03:41:14,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:41:14,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:41:14,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:41:14,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:41:14,050 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:41:14,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:41:14,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:41:14,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:41:14,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:41:14,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:41:14,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:41:14,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:41:14,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:41:14,051 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:41:14,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:41:14,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:41:14,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:41:14,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:41:14,052 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:41:14,053 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:41:14,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:41:14,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:41:14,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:41:14,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:41:14,055 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:41:14,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:41:14,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:41:14,383 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:41:14,385 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:41:14,386 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:41:14,387 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-22 03:41:14,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8c96859/52592ba385df45a5a8fedaba6f28d4a3/FLAG86312056e [2020-08-22 03:41:15,029 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:41:15,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_product51.cil.c [2020-08-22 03:41:15,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8c96859/52592ba385df45a5a8fedaba6f28d4a3/FLAG86312056e [2020-08-22 03:41:15,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8c96859/52592ba385df45a5a8fedaba6f28d4a3 [2020-08-22 03:41:15,350 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:41:15,352 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:41:15,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:41:15,354 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:41:15,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:41:15,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:41:15" (1/1) ... [2020-08-22 03:41:15,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357d93df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:15, skipping insertion in model container [2020-08-22 03:41:15,362 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:41:15" (1/1) ... [2020-08-22 03:41:15,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:41:15,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:41:15,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:41:15,902 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:41:15,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:41:16,040 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:41:16,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16 WrapperNode [2020-08-22 03:41:16,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:41:16,042 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:41:16,042 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:41:16,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:41:16,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,155 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (1/1) ... [2020-08-22 03:41:16,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:41:16,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:41:16,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:41:16,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:41:16,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (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 03:41:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:41:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:41:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 03:41:16,232 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 03:41:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 03:41:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 03:41:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 03:41:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 03:41:16,233 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 03:41:16,234 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:41:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 03:41:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 03:41:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 03:41:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 03:41:16,236 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 03:41:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 03:41:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 03:41:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 03:41:16,237 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 03:41:16,238 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 03:41:16,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 03:41:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 03:41:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 03:41:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 03:41:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 03:41:16,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 03:41:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:41:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:41:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 03:41:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 03:41:16,241 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 03:41:16,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 03:41:16,243 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 03:41:16,244 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 03:41:16,245 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 03:41:16,246 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:41:16,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 03:41:16,248 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 03:41:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 03:41:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:41:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 03:41:16,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:41:17,350 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:41:17,350 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:41:17,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:41:17 BoogieIcfgContainer [2020-08-22 03:41:17,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:41:17,357 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:41:17,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:41:17,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:41:17,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:41:15" (1/3) ... [2020-08-22 03:41:17,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf0cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:41:17, skipping insertion in model container [2020-08-22 03:41:17,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:41:16" (2/3) ... [2020-08-22 03:41:17,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf0cf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:41:17, skipping insertion in model container [2020-08-22 03:41:17,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:41:17" (3/3) ... [2020-08-22 03:41:17,365 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_product51.cil.c [2020-08-22 03:41:17,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:41:17,384 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:41:17,395 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:41:17,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:41:17,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:41:17,418 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:41:17,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:41:17,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:41:17,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:41:17,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:41:17,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:41:17,442 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-08-22 03:41:17,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 03:41:17,453 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:17,454 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 03:41:17,455 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:17,461 INFO L82 PathProgramCache]: Analyzing trace with hash 640895003, now seen corresponding path program 1 times [2020-08-22 03:41:17,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:17,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [737708172] [2020-08-22 03:41:17,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,132 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:18,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 03:41:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 03:41:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 03:41:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:18,264 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 03:41:18,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [737708172] [2020-08-22 03:41:18,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:18,268 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:41:18,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039709173] [2020-08-22 03:41:18,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:41:18,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:18,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:41:18,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:41:18,291 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 3 states. [2020-08-22 03:41:19,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:19,528 INFO L93 Difference]: Finished difference Result 323 states and 421 transitions. [2020-08-22 03:41:19,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:41:19,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2020-08-22 03:41:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:19,546 INFO L225 Difference]: With dead ends: 323 [2020-08-22 03:41:19,546 INFO L226 Difference]: Without dead ends: 174 [2020-08-22 03:41:19,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:41:19,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-08-22 03:41:19,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-08-22 03:41:19,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-22 03:41:19,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 165 transitions. [2020-08-22 03:41:19,649 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 165 transitions. Word has length 52 [2020-08-22 03:41:19,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:19,649 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 165 transitions. [2020-08-22 03:41:19,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:41:19,650 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 165 transitions. [2020-08-22 03:41:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-08-22 03:41:19,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:19,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:41:19,654 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:41:19,655 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:19,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:19,655 INFO L82 PathProgramCache]: Analyzing trace with hash -61253498, now seen corresponding path program 1 times [2020-08-22 03:41:19,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:19,656 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728182103] [2020-08-22 03:41:19,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:19,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,032 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:20,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:41:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 03:41:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 03:41:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:20,076 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 03:41:20,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728182103] [2020-08-22 03:41:20,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:20,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:41:20,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297385185] [2020-08-22 03:41:20,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:41:20,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:20,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:41:20,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:41:20,080 INFO L87 Difference]: Start difference. First operand 140 states and 165 transitions. Second operand 4 states. [2020-08-22 03:41:20,511 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:41:21,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:21,445 INFO L93 Difference]: Finished difference Result 250 states and 304 transitions. [2020-08-22 03:41:21,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 03:41:21,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-08-22 03:41:21,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:21,448 INFO L225 Difference]: With dead ends: 250 [2020-08-22 03:41:21,448 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 03:41:21,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:41:21,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 03:41:21,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 131. [2020-08-22 03:41:21,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-08-22 03:41:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2020-08-22 03:41:21,507 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 53 [2020-08-22 03:41:21,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:21,508 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2020-08-22 03:41:21,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:41:21,508 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2020-08-22 03:41:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 03:41:21,518 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:21,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:41:21,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:41:21,519 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2048791527, now seen corresponding path program 1 times [2020-08-22 03:41:21,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:21,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894256046] [2020-08-22 03:41:21,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:21,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,863 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:21,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 03:41:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:41:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:41:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:21,966 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 03:41:21,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894256046] [2020-08-22 03:41:21,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:21,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:41:21,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285097457] [2020-08-22 03:41:21,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:41:21,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:41:21,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:41:21,969 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 8 states. [2020-08-22 03:41:22,355 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:22,701 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:22,948 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:23,198 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:23,909 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 03:41:25,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:25,840 INFO L93 Difference]: Finished difference Result 451 states and 558 transitions. [2020-08-22 03:41:25,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 03:41:25,841 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2020-08-22 03:41:25,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:25,846 INFO L225 Difference]: With dead ends: 451 [2020-08-22 03:41:25,846 INFO L226 Difference]: Without dead ends: 344 [2020-08-22 03:41:25,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-22 03:41:25,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2020-08-22 03:41:25,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 286. [2020-08-22 03:41:25,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 286 states. [2020-08-22 03:41:25,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 345 transitions. [2020-08-22 03:41:25,934 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 345 transitions. Word has length 57 [2020-08-22 03:41:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:25,935 INFO L479 AbstractCegarLoop]: Abstraction has 286 states and 345 transitions. [2020-08-22 03:41:25,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:41:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 345 transitions. [2020-08-22 03:41:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-08-22 03:41:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:25,938 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] [2020-08-22 03:41:25,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:41:25,938 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:25,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1441609457, now seen corresponding path program 1 times [2020-08-22 03:41:25,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:25,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949336176] [2020-08-22 03:41:25,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,265 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:26,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:26,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:41:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 03:41:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 03:41:26,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-22 03:41:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:26,375 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 03:41:26,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949336176] [2020-08-22 03:41:26,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:26,376 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 03:41:26,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66787277] [2020-08-22 03:41:26,377 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 03:41:26,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:26,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 03:41:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 03:41:26,378 INFO L87 Difference]: Start difference. First operand 286 states and 345 transitions. Second operand 8 states. [2020-08-22 03:41:26,706 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:28,094 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:28,485 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:28,732 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 03:41:28,957 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:29,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:29,678 INFO L93 Difference]: Finished difference Result 878 states and 1149 transitions. [2020-08-22 03:41:29,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:41:29,679 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 63 [2020-08-22 03:41:29,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:29,692 INFO L225 Difference]: With dead ends: 878 [2020-08-22 03:41:29,696 INFO L226 Difference]: Without dead ends: 616 [2020-08-22 03:41:29,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-08-22 03:41:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2020-08-22 03:41:29,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 549. [2020-08-22 03:41:29,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-08-22 03:41:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 675 transitions. [2020-08-22 03:41:29,886 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 675 transitions. Word has length 63 [2020-08-22 03:41:29,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:29,887 INFO L479 AbstractCegarLoop]: Abstraction has 549 states and 675 transitions. [2020-08-22 03:41:29,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 03:41:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 675 transitions. [2020-08-22 03:41:29,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 03:41:29,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:29,891 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] [2020-08-22 03:41:29,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:41:29,892 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:29,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:29,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1167704009, now seen corresponding path program 1 times [2020-08-22 03:41:29,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:29,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542668199] [2020-08-22 03:41:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,154 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 03:41:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:41:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:41:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 03:41:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:41:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 03:41:30,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 03:41:30,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 03:41:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 03:41:30,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 03:41:30,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-22 03:41:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:41:30,261 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 03:41:30,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542668199] [2020-08-22 03:41:30,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:41:30,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:41:30,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775620843] [2020-08-22 03:41:30,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:41:30,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:41:30,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:41:30,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:41:30,267 INFO L87 Difference]: Start difference. First operand 549 states and 675 transitions. Second operand 6 states. [2020-08-22 03:41:30,588 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 03:41:31,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:41:31,986 INFO L93 Difference]: Finished difference Result 1300 states and 1694 transitions. [2020-08-22 03:41:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 03:41:31,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-08-22 03:41:31,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:41:31,993 INFO L225 Difference]: With dead ends: 1300 [2020-08-22 03:41:31,994 INFO L226 Difference]: Without dead ends: 775 [2020-08-22 03:41:31,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-22 03:41:31,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-08-22 03:41:32,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 705. [2020-08-22 03:41:32,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-08-22 03:41:32,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 860 transitions. [2020-08-22 03:41:32,123 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 860 transitions. Word has length 67 [2020-08-22 03:41:32,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:41:32,124 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 860 transitions. [2020-08-22 03:41:32,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:41:32,124 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 860 transitions. [2020-08-22 03:41:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-22 03:41:32,126 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:41:32,126 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] [2020-08-22 03:41:32,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 03:41:32,126 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:41:32,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:41:32,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1951258889, now seen corresponding path program 1 times [2020-08-22 03:41:32,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:41:32,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16420690] [2020-08-22 03:41:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:41:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:41:32,181 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:41:32,181 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:41:32,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 03:41:32,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:41:32 BoogieIcfgContainer [2020-08-22 03:41:32,208 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:41:32,210 INFO L168 Benchmark]: Toolchain (without parser) took 16857.79 ms. Allocated memory was 141.0 MB in the beginning and 505.9 MB in the end (delta: 364.9 MB). Free memory was 102.4 MB in the beginning and 198.3 MB in the end (delta: -95.9 MB). Peak memory consumption was 269.0 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,211 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,212 INFO L168 Benchmark]: CACSL2BoogieTranslator took 688.45 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 172.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,212 INFO L168 Benchmark]: Boogie Preprocessor took 121.29 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 167.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,213 INFO L168 Benchmark]: RCFGBuilder took 1192.46 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 167.7 MB in the beginning and 193.1 MB in the end (delta: -25.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,214 INFO L168 Benchmark]: TraceAbstraction took 14850.32 ms. Allocated memory was 235.9 MB in the beginning and 505.9 MB in the end (delta: 270.0 MB). Free memory was 193.1 MB in the beginning and 198.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:41:32,218 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.1 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 688.45 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 102.4 MB in the beginning and 172.5 MB in the end (delta: -70.1 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.29 ms. Allocated memory is still 204.5 MB. Free memory was 172.5 MB in the beginning and 167.7 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1192.46 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 167.7 MB in the beginning and 193.1 MB in the end (delta: -25.4 MB). Peak memory consumption was 80.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14850.32 ms. Allocated memory was 235.9 MB in the beginning and 505.9 MB in the end (delta: 270.0 MB). Free memory was 193.1 MB in the beginning and 198.3 MB in the end (delta: -5.2 MB). Peak memory consumption was 264.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 977]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L48] int waterLevel = 1; [L49] int methaneLevelCritical = 0; [L225] int pumpRunning = 0; [L226] int systemActive = 1; [L473] int cleanupTimeShifts = 4; [L776] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L549] int retValue_acc ; [L550] int tmp ; [L554] FCALL select_helpers() [L555] FCALL select_features() [L556] CALL, EXPR valid_product() [L598] int retValue_acc ; [L601] retValue_acc = 1 [L602] return (retValue_acc); [L556] RET, EXPR valid_product() [L556] tmp = valid_product() [L558] COND TRUE \read(tmp) [L560] FCALL setup() [L561] CALL runTest() [L540] CALL test() [L155] int splverifierCounter ; [L156] int tmp ; [L157] int tmp___0 ; [L158] int tmp___1 ; [L159] int tmp___2 ; [L162] splverifierCounter = 0 [L164] COND TRUE 1 [L166] COND TRUE splverifierCounter < 4 [L172] tmp = __VERIFIER_nondet_int() [L174] COND TRUE \read(tmp) [L176] CALL waterRise() [L66] COND TRUE waterLevel < 2 [L67] waterLevel = waterLevel + 1 [L176] RET waterRise() [L182] tmp___0 = __VERIFIER_nondet_int() [L184] COND FALSE !(\read(tmp___0)) [L192] tmp___2 = __VERIFIER_nondet_int() [L194] COND FALSE !(\read(tmp___2)) [L198] tmp___1 = __VERIFIER_nondet_int() [L200] COND TRUE \read(tmp___1) [L202] CALL stopSystem() [L426] COND FALSE !(\read(pumpRunning)) [L433] systemActive = 0 [L202] RET stopSystem() [L209] CALL timeShift() [L233] COND FALSE !(\read(pumpRunning)) [L240] COND FALSE !(\read(systemActive)) [L248] CALL __utac_acc__Specification3_spec__1() [L440] int tmp ; [L441] int tmp___0 ; [L442] int tmp___1 ; [L446] CALL, EXPR isMethaneLevelCritical() [L87] int retValue_acc ; [L90] retValue_acc = methaneLevelCritical [L91] return (retValue_acc); [L446] RET, EXPR isMethaneLevelCritical() [L446] tmp = isMethaneLevelCritical() [L448] COND FALSE !(\read(tmp)) [L452] CALL, EXPR getWaterLevel() [L119] int retValue_acc ; [L122] retValue_acc = waterLevel [L123] return (retValue_acc); [L452] RET, EXPR getWaterLevel() [L452] tmp___0 = getWaterLevel() [L454] COND TRUE tmp___0 == 2 [L456] CALL, EXPR isPumpRunning() [L340] int retValue_acc ; [L343] retValue_acc = pumpRunning [L344] return (retValue_acc); [L456] RET, EXPR isPumpRunning() [L456] tmp___1 = isPumpRunning() [L458] COND FALSE !(\read(tmp___1)) [L462] CALL __automaton_fail() [L977] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 244 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 14.7s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 640 SDtfs, 1471 SDslu, 411 SDs, 0 SdLazy, 2270 SolverSat, 928 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 135 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=705occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 256 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 359 NumberOfCodeBlocks, 359 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 287 ConstructedInterpolants, 0 QuantifiedInterpolants, 82182 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...