/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=SMALLEST --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_spec4_product45.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 15:36:15,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:36:15,099 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:36:15,132 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:36:15,133 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:36:15,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:36:15,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:36:15,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:36:15,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:36:15,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:36:15,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:36:15,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:36:15,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:36:15,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:36:15,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:36:15,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:36:15,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:36:15,165 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:36:15,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:36:15,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:36:15,174 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:36:15,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:36:15,176 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:36:15,177 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:36:15,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:36:15,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:36:15,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:36:15,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:36:15,190 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:36:15,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 15:36:15,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 15:36:15,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 15:36:15,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 15:36:15,195 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 15:36:15,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 15:36:15,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 15:36:15,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 15:36:15,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 15:36:15,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:36:15,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:36:15,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:36:15,200 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 [2020-08-21 15:36:15,240 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:36:15,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:36:15,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:36:15,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:36:15,242 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:36:15,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:36:15,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:36:15,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:36:15,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:36:15,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:36:15,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:36:15,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:36:15,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:36:15,244 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:36:15,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:36:15,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:36:15,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:36:15,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:36:15,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:36:15,245 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:36:15,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:36:15,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:36:15,246 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:36:15,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:36:15,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:36:15,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:36:15,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:36:15,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:36:15,247 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:36:15,247 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=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:36:15,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:36:15,534 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:36:15,537 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:36:15,538 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:36:15,539 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:36:15,539 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-21 15:36:15,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47a1434c/af4ca295da004ead8cef5bb82b620db8/FLAG011a9f407 [2020-08-21 15:36:16,118 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:36:16,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-21 15:36:16,143 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47a1434c/af4ca295da004ead8cef5bb82b620db8/FLAG011a9f407 [2020-08-21 15:36:16,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b47a1434c/af4ca295da004ead8cef5bb82b620db8 [2020-08-21 15:36:16,451 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:36:16,453 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:36:16,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:16,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:36:16,459 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:36:16,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:16" (1/1) ... [2020-08-21 15:36:16,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f9cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:16, skipping insertion in model container [2020-08-21 15:36:16,464 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:36:16" (1/1) ... [2020-08-21 15:36:16,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:36:16,517 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:36:16,977 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:16,987 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:36:17,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:36:17,132 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:36:17,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17 WrapperNode [2020-08-21 15:36:17,133 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:36:17,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:36:17,134 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:36:17,134 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:36:17,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,145 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (1/1) ... [2020-08-21 15:36:17,221 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:36:17,222 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:36:17,222 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:36:17,222 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:36:17,223 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (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 [2020-08-21 15:36:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:36:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:36:17,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 15:36:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 15:36:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 15:36:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:36:17,280 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 15:36:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:36:17,281 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 15:36:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 15:36:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 15:36:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 15:36:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 15:36:17,282 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 15:36:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 15:36:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:17,283 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:17,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 15:36:17,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 15:36:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 15:36:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:17,285 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 15:36:17,286 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 15:36:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 15:36:17,287 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 15:36:17,288 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 15:36:17,289 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 15:36:17,289 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:36:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 15:36:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 15:36:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 15:36:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 15:36:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 15:36:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 15:36:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 15:36:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 15:36:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 15:36:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-21 15:36:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:36:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:36:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 15:36:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:36:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 15:36:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:36:18,367 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:36:18,367 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 15:36:18,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:18 BoogieIcfgContainer [2020-08-21 15:36:18,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:36:18,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:36:18,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:36:18,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:36:18,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:36:16" (1/3) ... [2020-08-21 15:36:18,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1393a5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:18, skipping insertion in model container [2020-08-21 15:36:18,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:36:17" (2/3) ... [2020-08-21 15:36:18,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1393a5c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:36:18, skipping insertion in model container [2020-08-21 15:36:18,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:36:18" (3/3) ... [2020-08-21 15:36:18,381 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-21 15:36:18,392 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:36:18,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:36:18,412 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:36:18,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:36:18,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:36:18,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:36:18,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:36:18,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:36:18,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:36:18,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:36:18,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:36:18,459 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-21 15:36:18,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-21 15:36:18,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:18,470 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] [2020-08-21 15:36:18,471 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:18,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:18,477 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-21 15:36:18,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:18,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423094522] [2020-08-21 15:36:18,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:18,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,114 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-21 15:36:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:19,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423094522] [2020-08-21 15:36:19,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:19,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 15:36:19,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488744608] [2020-08-21 15:36:19,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 15:36:19,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:19,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 15:36:19,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:19,229 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-21 15:36:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:20,432 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-21 15:36:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 15:36:20,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-21 15:36:20,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:20,450 INFO L225 Difference]: With dead ends: 309 [2020-08-21 15:36:20,450 INFO L226 Difference]: Without dead ends: 167 [2020-08-21 15:36:20,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 15:36:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-21 15:36:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-21 15:36:20,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-21 15:36:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-21 15:36:20,604 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-21 15:36:20,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:20,604 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-21 15:36:20,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 15:36:20,605 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-21 15:36:20,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-21 15:36:20,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:20,608 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] [2020-08-21 15:36:20,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:36:20,609 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:20,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:20,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-21 15:36:20,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:20,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887035320] [2020-08-21 15:36:20,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:20,960 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:20,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 15:36:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 15:36:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:21,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:21,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887035320] [2020-08-21 15:36:21,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:21,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:36:21,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160857279] [2020-08-21 15:36:21,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:36:21,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:21,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:36:21,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:36:21,053 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-21 15:36:21,486 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:22,393 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-21 15:36:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-21 15:36:22,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-21 15:36:22,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:22,405 INFO L225 Difference]: With dead ends: 242 [2020-08-21 15:36:22,406 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 15:36:22,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:36:22,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 15:36:22,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-21 15:36:22,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 15:36:22,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-21 15:36:22,455 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-21 15:36:22,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:22,456 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-21 15:36:22,456 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:36:22,456 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-21 15:36:22,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-21 15:36:22,458 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:22,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:22,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:36:22,459 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:22,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-21 15:36:22,460 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:22,460 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [898344021] [2020-08-21 15:36:22,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,806 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:22,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 15:36:22,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 15:36:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:22,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:22,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [898344021] [2020-08-21 15:36:22,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:22,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-21 15:36:22,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197163908] [2020-08-21 15:36:22,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-21 15:36:22,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:22,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-21 15:36:22,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-21 15:36:22,885 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-21 15:36:23,231 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:23,547 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:23,822 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:24,061 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:25,267 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-21 15:36:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 15:36:25,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-21 15:36:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:25,272 INFO L225 Difference]: With dead ends: 251 [2020-08-21 15:36:25,272 INFO L226 Difference]: Without dead ends: 151 [2020-08-21 15:36:25,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:25,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-21 15:36:25,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-21 15:36:25,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-21 15:36:25,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-21 15:36:25,308 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-21 15:36:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:25,309 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-21 15:36:25,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-21 15:36:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-21 15:36:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 15:36:25,312 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:25,312 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] [2020-08-21 15:36:25,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 15:36:25,313 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:25,313 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-21 15:36:25,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:25,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555809061] [2020-08-21 15:36:25,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,590 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:25,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:25,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:36:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 15:36:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 15:36:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:25,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:25,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555809061] [2020-08-21 15:36:25,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:25,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 15:36:25,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630979748] [2020-08-21 15:36:25,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 15:36:25,713 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:25,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 15:36:25,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-21 15:36:25,714 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-21 15:36:26,063 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:27,272 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:27,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:27,856 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-21 15:36:27,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:36:27,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-21 15:36:27,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:27,860 INFO L225 Difference]: With dead ends: 351 [2020-08-21 15:36:27,861 INFO L226 Difference]: Without dead ends: 251 [2020-08-21 15:36:27,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:36:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-21 15:36:27,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-21 15:36:27,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-21 15:36:27,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-21 15:36:27,907 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-21 15:36:27,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:27,908 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-21 15:36:27,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 15:36:27,908 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-21 15:36:27,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-21 15:36:27,910 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:27,910 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] [2020-08-21 15:36:27,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 15:36:27,911 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:27,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:27,911 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-21 15:36:27,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:27,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1593179111] [2020-08-21 15:36:27,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:27,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,228 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:28,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-21 15:36:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:28,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:28,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-21 15:36:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-21 15:36:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:28,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:36:28,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1593179111] [2020-08-21 15:36:28,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:36:28,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 15:36:28,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129552859] [2020-08-21 15:36:28,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:36:28,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:28,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:36:28,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:28,404 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-21 15:36:28,818 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:29,129 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:29,386 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:29,619 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:30,160 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:31,071 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:31,381 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:31,679 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:31,925 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:32,232 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:32,509 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 15:36:33,739 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:34,108 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:34,748 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-21 15:36:34,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-21 15:36:34,749 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-21 15:36:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:34,754 INFO L225 Difference]: With dead ends: 739 [2020-08-21 15:36:34,755 INFO L226 Difference]: Without dead ends: 553 [2020-08-21 15:36:34,756 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-21 15:36:34,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-21 15:36:34,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-21 15:36:34,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-21 15:36:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-21 15:36:34,863 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-21 15:36:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:34,863 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-21 15:36:34,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:36:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-21 15:36:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-21 15:36:34,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:34,870 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:34,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 15:36:34,870 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:34,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:34,871 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-21 15:36:34,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:34,871 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057872167] [2020-08-21 15:36:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,151 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:35,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:35,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:36:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:35,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-21 15:36:35,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 15:36:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-21 15:36:35,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:35,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-21 15:36:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-21 15:36:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:35,360 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-21 15:36:35,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057872167] [2020-08-21 15:36:35,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:35,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:36:35,362 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619811503] [2020-08-21 15:36:35,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:36:35,363 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:35,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:36:35,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:36:35,364 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-21 15:36:35,908 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 15:36:36,483 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:38,178 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-21 15:36:39,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:39,675 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-21 15:36:39,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-21 15:36:39,676 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-21 15:36:39,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:39,681 INFO L225 Difference]: With dead ends: 964 [2020-08-21 15:36:39,681 INFO L226 Difference]: Without dead ends: 610 [2020-08-21 15:36:39,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=138, Invalid=462, Unknown=0, NotChecked=0, Total=600 [2020-08-21 15:36:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-21 15:36:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-21 15:36:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-21 15:36:39,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-21 15:36:39,806 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-21 15:36:39,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:39,806 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-21 15:36:39,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:36:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-21 15:36:39,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-21 15:36:39,809 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:39,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:39,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 15:36:39,810 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:39,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-21 15:36:39,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:39,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451065822] [2020-08-21 15:36:39,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,106 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:40,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:40,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:40,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:40,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:40,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:40,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:36:40,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:36:40,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 15:36:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:40,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:36:40,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 15:36:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 15:36:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:40,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 15:36:40,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451065822] [2020-08-21 15:36:40,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:40,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-21 15:36:40,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249469305] [2020-08-21 15:36:40,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-21 15:36:40,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:40,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-21 15:36:40,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-21 15:36:40,294 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-21 15:36:41,171 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:41,402 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 15:36:41,632 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:41,876 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:42,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:42,962 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-21 15:36:42,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 15:36:42,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-21 15:36:42,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:42,969 INFO L225 Difference]: With dead ends: 1175 [2020-08-21 15:36:42,969 INFO L226 Difference]: Without dead ends: 628 [2020-08-21 15:36:42,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 15:36:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-21 15:36:43,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-21 15:36:43,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-21 15:36:43,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-21 15:36:43,135 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-21 15:36:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:43,136 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-21 15:36:43,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-21 15:36:43,136 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-21 15:36:43,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-21 15:36:43,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:43,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:43,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 15:36:43,142 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-21 15:36:43,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:43,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [456684010] [2020-08-21 15:36:43,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,424 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:43,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:43,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 15:36:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:36:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:36:43,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 15:36:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:43,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:36:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-21 15:36:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-21 15:36:43,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:43,690 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-21 15:36:43,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [456684010] [2020-08-21 15:36:43,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:43,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:36:43,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444306264] [2020-08-21 15:36:43,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:36:43,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:43,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:36:43,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:43,693 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-21 15:36:44,142 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:44,382 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:44,608 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:45,155 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:45,394 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:45,623 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:46,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:46,717 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-21 15:36:46,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 15:36:46,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-21 15:36:46,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:46,725 INFO L225 Difference]: With dead ends: 1061 [2020-08-21 15:36:46,725 INFO L226 Difference]: Without dead ends: 499 [2020-08-21 15:36:46,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 15:36:46,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-21 15:36:46,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-21 15:36:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-21 15:36:46,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-21 15:36:46,878 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-21 15:36:46,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:46,879 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-21 15:36:46,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:36:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-21 15:36:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-21 15:36:46,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:46,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:46,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 15:36:46,883 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:46,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:46,883 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-21 15:36:46,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:46,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462510632] [2020-08-21 15:36:46,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,160 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:47,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:47,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:47,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:36:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:47,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:36:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:47,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 15:36:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:36:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:36:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-21 15:36:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-21 15:36:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-21 15:36:47,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462510632] [2020-08-21 15:36:47,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:47,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 15:36:47,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702243377] [2020-08-21 15:36:47,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 15:36:47,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 15:36:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-21 15:36:47,509 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-21 15:36:48,114 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:48,836 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:49,682 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:49,977 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:50,236 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:50,495 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:50,819 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:51,074 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:51,600 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 15:36:52,130 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-21 15:36:53,073 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:53,321 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:53,594 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:53,829 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:36:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:54,552 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-21 15:36:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 15:36:54,553 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-21 15:36:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:54,560 INFO L225 Difference]: With dead ends: 1250 [2020-08-21 15:36:54,560 INFO L226 Difference]: Without dead ends: 799 [2020-08-21 15:36:54,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-21 15:36:54,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-21 15:36:54,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-21 15:36:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-21 15:36:54,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-21 15:36:54,724 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-21 15:36:54,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:54,725 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-21 15:36:54,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 15:36:54,725 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-21 15:36:54,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 15:36:54,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:54,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:54,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 15:36:54,728 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:54,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:54,729 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-21 15:36:54,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:54,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933338430] [2020-08-21 15:36:54,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,012 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:55,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:55,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:36:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:55,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:55,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:36:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-21 15:36:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-21 15:36:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-21 15:36:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:55,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:36:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 15:36:55,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 15:36:55,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:55,185 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-21 15:36:55,185 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933338430] [2020-08-21 15:36:55,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:55,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-21 15:36:55,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554359901] [2020-08-21 15:36:55,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 15:36:55,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:55,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 15:36:55,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-21 15:36:55,188 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-21 15:36:55,587 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:57,286 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:57,528 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:36:57,792 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:58,046 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:36:58,283 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 15:36:58,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:36:58,705 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-21 15:36:58,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-21 15:36:58,705 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-21 15:36:58,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:36:58,711 INFO L225 Difference]: With dead ends: 888 [2020-08-21 15:36:58,711 INFO L226 Difference]: Without dead ends: 885 [2020-08-21 15:36:58,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-21 15:36:58,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-21 15:36:58,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-21 15:36:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-21 15:36:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-21 15:36:58,860 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-21 15:36:58,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:36:58,861 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-21 15:36:58,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 15:36:58,861 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-21 15:36:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-21 15:36:58,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:36:58,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:36:58,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 15:36:58,864 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:36:58,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:36:58,865 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-21 15:36:58,865 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:36:58,865 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256412111] [2020-08-21 15:36:58,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:36:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,167 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-21 15:36:59,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:36:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:36:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 15:36:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 15:36:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 15:36:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-21 15:36:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 15:36:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 15:36:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 15:36:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:59,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 15:36:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-21 15:36:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 15:36:59,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 15:36:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 15:36:59,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-21 15:36:59,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-21 15:36:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:36:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 15:36:59,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256412111] [2020-08-21 15:36:59,369 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 15:36:59,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-21 15:36:59,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516795774] [2020-08-21 15:36:59,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 15:36:59,374 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:36:59,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 15:36:59,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-21 15:36:59,375 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-21 15:36:59,729 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:00,277 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:01,038 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:01,316 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:01,563 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:01,793 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-21 15:37:02,056 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:02,302 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 15:37:03,482 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-21 15:37:04,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:37:04,189 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-21 15:37:04,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-21 15:37:04,189 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-21 15:37:04,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:37:04,198 INFO L225 Difference]: With dead ends: 1786 [2020-08-21 15:37:04,198 INFO L226 Difference]: Without dead ends: 1168 [2020-08-21 15:37:04,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-21 15:37:04,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-21 15:37:04,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-21 15:37:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-21 15:37:04,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-21 15:37:04,476 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-21 15:37:04,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:37:04,477 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-21 15:37:04,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 15:37:04,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-21 15:37:04,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-21 15:37:04,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:37:04,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:37:04,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-21 15:37:04,486 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:37:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:37:04,486 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-21 15:37:04,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:37:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083770677] [2020-08-21 15:37:04,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:37:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:37:04,591 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:37:04,591 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:37:04,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-21 15:37:04,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:37:04 BoogieIcfgContainer [2020-08-21 15:37:04,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:37:04,656 INFO L168 Benchmark]: Toolchain (without parser) took 48202.49 ms. Allocated memory was 140.0 MB in the beginning and 726.1 MB in the end (delta: 586.2 MB). Free memory was 101.8 MB in the beginning and 424.4 MB in the end (delta: -322.6 MB). Peak memory consumption was 263.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,659 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 677.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 170.7 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,662 INFO L168 Benchmark]: Boogie Preprocessor took 87.66 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,667 INFO L168 Benchmark]: RCFGBuilder took 1151.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.7 MB in the beginning and 195.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,668 INFO L168 Benchmark]: TraceAbstraction took 46279.22 ms. Allocated memory was 236.5 MB in the beginning and 726.1 MB in the end (delta: 489.7 MB). Free memory was 195.8 MB in the beginning and 424.4 MB in the end (delta: -228.6 MB). Peak memory consumption was 261.1 MB. Max. memory is 7.1 GB. [2020-08-21 15:37:04,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 677.97 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 101.6 MB in the beginning and 170.7 MB in the end (delta: -69.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.66 ms. Allocated memory is still 203.4 MB. Free memory was 170.7 MB in the beginning and 166.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1151.32 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 166.7 MB in the beginning and 195.8 MB in the end (delta: -29.1 MB). Peak memory consumption was 82.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46279.22 ms. Allocated memory was 236.5 MB in the beginning and 726.1 MB in the end (delta: 489.7 MB). Free memory was 195.8 MB in the beginning and 424.4 MB in the end (delta: -228.6 MB). Peak memory consumption was 261.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L791] int retValue_acc ; [L792] int tmp ; [L796] FCALL select_helpers() [L797] FCALL select_features() [L798] CALL, EXPR valid_product() [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] RET, EXPR valid_product() [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L802] FCALL setup() [L803] CALL runTest() [L782] CALL test() [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L66] CALL waterRise() [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L66] RET waterRise() [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L198] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L159] CALL, EXPR isHighWaterLevel() [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L300] CALL, EXPR isHighWaterSensorDry() [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] RET, EXPR isHighWaterSensorDry() [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] RET, EXPR isHighWaterLevel() [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L163] CALL activatePump() [L213] int tmp ; [L217] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] RET, EXPR isMethaneAlarm() [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L223] CALL activatePump__wrappee__highWaterSensor() [L208] pumpRunning = 1 [L223] RET activatePump__wrappee__highWaterSensor() [L163] RET activatePump() [L198] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) [L140] RET __utac_acc__Specification4_spec__1() [L97] RET timeShift() [L54] COND TRUE 1 [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L97] CALL timeShift() [L125] COND TRUE \read(pumpRunning) [L127] CALL lowerWaterLevel() [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L127] RET lowerWaterLevel() [L132] COND TRUE \read(systemActive) [L134] CALL processEnvironment() [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L185] CALL, EXPR isMethaneAlarm() [L238] int retValue_acc ; [L242] CALL, EXPR isMethaneLevelCritical() [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] RET, EXPR isMethaneLevelCritical() [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] RET, EXPR isMethaneAlarm() [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L193] CALL processEnvironment__wrappee__methaneQuery() [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L172] FCALL processEnvironment__wrappee__base() [L193] RET processEnvironment__wrappee__methaneQuery() [L134] RET processEnvironment() [L140] CALL __utac_acc__Specification4_spec__1() [L690] int tmp ; [L691] int tmp___0 ; [L695] CALL, EXPR getWaterLevel() [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] RET, EXPR getWaterLevel() [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L699] CALL, EXPR isPumpRunning() [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] RET, EXPR isPumpRunning() [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) [L703] CALL __automaton_fail() [L317] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 232 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.1s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1431 SDtfs, 4039 SDslu, 1694 SDs, 0 SdLazy, 9636 SolverSat, 2677 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 18.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1022occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 11 MinimizatonAttempts, 602 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1347 NumberOfCodeBlocks, 1347 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 1136 ConstructedInterpolants, 0 QuantifiedInterpolants, 433066 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 184/214 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...