/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 10:08:10,178 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:08:10,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:08:10,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:08:10,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:08:10,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:08:10,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:08:10,239 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:08:10,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:08:10,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:08:10,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:08:10,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:08:10,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:08:10,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:08:10,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:08:10,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:08:10,249 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:08:10,250 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:08:10,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:08:10,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:08:10,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:08:10,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:08:10,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:08:10,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:08:10,263 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:08:10,263 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:08:10,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:08:10,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:08:10,265 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:08:10,266 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:08:10,266 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:08:10,267 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:08:10,268 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:08:10,269 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:08:10,270 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:08:10,271 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:08:10,271 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:08:10,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:08:10,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:08:10,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:08:10,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:08:10,275 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 [2020-09-21 10:08:10,305 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:08:10,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:08:10,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:08:10,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:08:10,310 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:08:10,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:08:10,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:08:10,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:08:10,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:08:10,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:08:10,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:08:10,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:08:10,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:08:10,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:08:10,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:08:10,313 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:08:10,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:08:10,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:08:10,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:08:10,314 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:08:10,314 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:08:10,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:08:10,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:08:10,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:08:10,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:08:10,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:08:10,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:08:10,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:08:10,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:08:10,317 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 -> false [2020-09-21 10:08:10,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:08:10,808 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:08:10,813 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:08:10,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:08:10,816 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:08:10,817 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-09-21 10:08:10,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5baea78e6/a5d0ed435c0d48aca39c7052a2c4cce3/FLAGf3656c09e [2020-09-21 10:08:11,517 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:08:11,518 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec3_productSimulator.cil.c [2020-09-21 10:08:11,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5baea78e6/a5d0ed435c0d48aca39c7052a2c4cce3/FLAGf3656c09e [2020-09-21 10:08:11,783 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5baea78e6/a5d0ed435c0d48aca39c7052a2c4cce3 [2020-09-21 10:08:11,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:08:11,802 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:08:11,805 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:08:11,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:08:11,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:08:11,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:11" (1/1) ... [2020-09-21 10:08:11,816 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ac3c2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:11, skipping insertion in model container [2020-09-21 10:08:11,817 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:08:11" (1/1) ... [2020-09-21 10:08:11,827 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:08:11,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:08:12,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:08:12,410 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:08:12,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:08:12,588 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:08:12,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12 WrapperNode [2020-09-21 10:08:12,589 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:08:12,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:08:12,590 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:08:12,590 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:08:12,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,713 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (1/1) ... [2020-09-21 10:08:12,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:08:12,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:08:12,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:08:12,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:08:12,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (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 [2020-09-21 10:08:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:08:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:08:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-09-21 10:08:12,832 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-09-21 10:08:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-09-21 10:08:12,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-09-21 10:08:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-09-21 10:08:12,834 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-09-21 10:08:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-09-21 10:08:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-09-21 10:08:12,835 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-09-21 10:08:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-09-21 10:08:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-09-21 10:08:12,836 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:08:12,837 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-09-21 10:08:12,838 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-09-21 10:08:12,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__highWaterSensor [2020-09-21 10:08:12,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__highWaterSensor [2020-09-21 10:08:12,838 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__lowWaterSensor [2020-09-21 10:08:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__lowWaterSensor [2020-09-21 10:08:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__before__methaneAlarm [2020-09-21 10:08:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__role__methaneAlarm [2020-09-21 10:08:12,839 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-09-21 10:08:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__before__methaneQuery [2020-09-21 10:08:12,840 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__role__methaneQuery [2020-09-21 10:08:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-09-21 10:08:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-09-21 10:08:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-09-21 10:08:12,841 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-09-21 10:08:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-09-21 10:08:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-09-21 10:08:12,842 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-09-21 10:08:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-09-21 10:08:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-09-21 10:08:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-09-21 10:08:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-09-21 10:08:12,843 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-09-21 10:08:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-09-21 10:08:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:08:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-09-21 10:08:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-09-21 10:08:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-09-21 10:08:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-09-21 10:08:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-09-21 10:08:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-09-21 10:08:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-09-21 10:08:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-09-21 10:08:12,846 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-09-21 10:08:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:08:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:08:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-21 10:08:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-09-21 10:08:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 10:08:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 10:08:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-09-21 10:08:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 10:08:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 10:08:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 10:08:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 10:08:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-09-21 10:08:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 10:08:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-09-21 10:08:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-09-21 10:08:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 10:08:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-09-21 10:08:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-09-21 10:08:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-09-21 10:08:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-09-21 10:08:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-09-21 10:08:12,852 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-09-21 10:08:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-09-21 10:08:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-09-21 10:08:12,853 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-09-21 10:08:12,854 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-09-21 10:08:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:08:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-09-21 10:08:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-09-21 10:08:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-09-21 10:08:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-09-21 10:08:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-09-21 10:08:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-09-21 10:08:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-09-21 10:08:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__highWaterSensor [2020-09-21 10:08:12,858 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__highWaterSensor [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__lowWaterSensor [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__lowWaterSensor [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__before__methaneAlarm [2020-09-21 10:08:12,859 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__role__methaneAlarm [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__before__methaneQuery [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__role__methaneQuery [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-09-21 10:08:12,860 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-09-21 10:08:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:08:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 10:08:12,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:08:14,095 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:08:14,096 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-21 10:08:14,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:14 BoogieIcfgContainer [2020-09-21 10:08:14,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:08:14,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:08:14,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:08:14,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:08:14,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:08:11" (1/3) ... [2020-09-21 10:08:14,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5a3a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:08:14, skipping insertion in model container [2020-09-21 10:08:14,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:08:12" (2/3) ... [2020-09-21 10:08:14,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f5a3a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:08:14, skipping insertion in model container [2020-09-21 10:08:14,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:08:14" (3/3) ... [2020-09-21 10:08:14,120 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec3_productSimulator.cil.c [2020-09-21 10:08:14,132 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:08:14,146 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 10:08:14,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 10:08:14,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:08:14,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:08:14,206 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:08:14,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:08:14,207 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:08:14,207 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:08:14,207 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:08:14,208 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:08:14,241 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states. [2020-09-21 10:08:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-21 10:08:14,257 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:14,258 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:14,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:14,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:14,265 INFO L82 PathProgramCache]: Analyzing trace with hash -1384301403, now seen corresponding path program 1 times [2020-09-21 10:08:14,277 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:14,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969494370] [2020-09-21 10:08:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:14,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,148 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 10:08:15,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:08:15,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 10:08:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:15,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 10:08:15,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 10:08:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:15,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:15,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-21 10:08:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:15,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 10:08:15,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969494370] [2020-09-21 10:08:15,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:15,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:08:15,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122932636] [2020-09-21 10:08:15,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:08:15,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:15,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:08:15,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:08:15,428 INFO L87 Difference]: Start difference. First operand 248 states. Second operand 5 states. [2020-09-21 10:08:17,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:17,815 INFO L93 Difference]: Finished difference Result 448 states and 591 transitions. [2020-09-21 10:08:17,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:08:17,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-09-21 10:08:17,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:17,838 INFO L225 Difference]: With dead ends: 448 [2020-09-21 10:08:17,839 INFO L226 Difference]: Without dead ends: 254 [2020-09-21 10:08:17,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:08:17,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-21 10:08:17,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 205. [2020-09-21 10:08:17,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2020-09-21 10:08:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 252 transitions. [2020-09-21 10:08:17,970 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 252 transitions. Word has length 84 [2020-09-21 10:08:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:17,971 INFO L479 AbstractCegarLoop]: Abstraction has 205 states and 252 transitions. [2020-09-21 10:08:17,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:08:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 252 transitions. [2020-09-21 10:08:17,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-21 10:08:17,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:17,977 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:17,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:08:17,978 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:17,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:17,978 INFO L82 PathProgramCache]: Analyzing trace with hash 435784209, now seen corresponding path program 1 times [2020-09-21 10:08:17,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:17,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1994873421] [2020-09-21 10:08:17,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:18,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,416 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 10:08:18,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:08:18,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 10:08:18,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 10:08:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 10:08:18,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-21 10:08:18,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-21 10:08:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-21 10:08:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 10:08:18,565 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1994873421] [2020-09-21 10:08:18,565 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:18,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:08:18,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671733678] [2020-09-21 10:08:18,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:08:18,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:18,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:08:18,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:08:18,569 INFO L87 Difference]: Start difference. First operand 205 states and 252 transitions. Second operand 6 states. [2020-09-21 10:08:19,302 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-09-21 10:08:21,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:21,271 INFO L93 Difference]: Finished difference Result 372 states and 469 transitions. [2020-09-21 10:08:21,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:08:21,272 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 85 [2020-09-21 10:08:21,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:21,277 INFO L225 Difference]: With dead ends: 372 [2020-09-21 10:08:21,277 INFO L226 Difference]: Without dead ends: 238 [2020-09-21 10:08:21,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:08:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-21 10:08:21,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 196. [2020-09-21 10:08:21,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-21 10:08:21,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 240 transitions. [2020-09-21 10:08:21,330 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 240 transitions. Word has length 85 [2020-09-21 10:08:21,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:21,330 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 240 transitions. [2020-09-21 10:08:21,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:08:21,331 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 240 transitions. [2020-09-21 10:08:21,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-21 10:08:21,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:21,335 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:21,335 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:08:21,335 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:21,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:21,336 INFO L82 PathProgramCache]: Analyzing trace with hash 681264365, now seen corresponding path program 1 times [2020-09-21 10:08:21,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:21,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990195673] [2020-09-21 10:08:21,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:21,884 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 10:08:21,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:21,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:08:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 10:08:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:22,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 10:08:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 10:08:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:22,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-21 10:08:22,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:22,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:08:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:22,193 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 10:08:22,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990195673] [2020-09-21 10:08:22,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:22,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-21 10:08:22,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402493630] [2020-09-21 10:08:22,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 10:08:22,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:22,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 10:08:22,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-09-21 10:08:22,201 INFO L87 Difference]: Start difference. First operand 196 states and 240 transitions. Second operand 12 states. [2020-09-21 10:08:22,888 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 10:08:23,693 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 211 [2020-09-21 10:08:24,709 WARN L193 SmtUtils]: Spent 691.00 ms on a formula simplification. DAG size of input: 214 DAG size of output: 213 [2020-09-21 10:08:25,943 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 10:08:26,344 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-09-21 10:08:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:30,838 INFO L93 Difference]: Finished difference Result 643 states and 818 transitions. [2020-09-21 10:08:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-21 10:08:30,839 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 90 [2020-09-21 10:08:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:30,845 INFO L225 Difference]: With dead ends: 643 [2020-09-21 10:08:30,845 INFO L226 Difference]: Without dead ends: 488 [2020-09-21 10:08:30,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-21 10:08:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-09-21 10:08:30,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 397. [2020-09-21 10:08:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 397 states. [2020-09-21 10:08:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 497 transitions. [2020-09-21 10:08:30,968 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 497 transitions. Word has length 90 [2020-09-21 10:08:30,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:30,969 INFO L479 AbstractCegarLoop]: Abstraction has 397 states and 497 transitions. [2020-09-21 10:08:30,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 10:08:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 497 transitions. [2020-09-21 10:08:30,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-21 10:08:30,973 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:30,973 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:30,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:08:30,973 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:30,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:30,974 INFO L82 PathProgramCache]: Analyzing trace with hash -326319286, now seen corresponding path program 1 times [2020-09-21 10:08:30,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:30,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118068720] [2020-09-21 10:08:30,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,471 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 10:08:31,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:31,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:08:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:31,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 10:08:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 10:08:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 10:08:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:31,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:08:31,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-21 10:08:31,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-09-21 10:08:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-21 10:08:31,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:31,692 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 10:08:31,692 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118068720] [2020-09-21 10:08:31,692 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:31,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-21 10:08:31,693 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727641259] [2020-09-21 10:08:31,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 10:08:31,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:31,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 10:08:31,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:08:31,695 INFO L87 Difference]: Start difference. First operand 397 states and 497 transitions. Second operand 10 states. [2020-09-21 10:08:32,254 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 10:08:34,715 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-21 10:08:35,203 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-21 10:08:35,623 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-09-21 10:08:36,045 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 10:08:38,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:38,267 INFO L93 Difference]: Finished difference Result 1234 states and 1653 transitions. [2020-09-21 10:08:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:08:38,273 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-09-21 10:08:38,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:38,280 INFO L225 Difference]: With dead ends: 1234 [2020-09-21 10:08:38,281 INFO L226 Difference]: Without dead ends: 878 [2020-09-21 10:08:38,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=138, Invalid=324, Unknown=0, NotChecked=0, Total=462 [2020-09-21 10:08:38,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-09-21 10:08:38,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 778. [2020-09-21 10:08:38,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 778 states. [2020-09-21 10:08:38,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 987 transitions. [2020-09-21 10:08:38,508 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 987 transitions. Word has length 96 [2020-09-21 10:08:38,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:38,509 INFO L479 AbstractCegarLoop]: Abstraction has 778 states and 987 transitions. [2020-09-21 10:08:38,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 10:08:38,509 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 987 transitions. [2020-09-21 10:08:38,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 10:08:38,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:38,513 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:38,514 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:08:38,514 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:38,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:38,514 INFO L82 PathProgramCache]: Analyzing trace with hash 635729360, now seen corresponding path program 1 times [2020-09-21 10:08:38,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:38,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487728151] [2020-09-21 10:08:38,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:38,963 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 208 [2020-09-21 10:08:38,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:08:38,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:39,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 10:08:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 10:08:39,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 10:08:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-21 10:08:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-21 10:08:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 10:08:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-21 10:08:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-21 10:08:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 10:08:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-21 10:08:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-21 10:08:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-21 10:08:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-09-21 10:08:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-09-21 10:08:39,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:08:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-09-21 10:08:39,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487728151] [2020-09-21 10:08:39,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:08:39,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-21 10:08:39,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358149712] [2020-09-21 10:08:39,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 10:08:39,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:08:39,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 10:08:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:08:39,132 INFO L87 Difference]: Start difference. First operand 778 states and 987 transitions. Second operand 8 states. [2020-09-21 10:08:39,775 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-09-21 10:08:44,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:08:44,126 INFO L93 Difference]: Finished difference Result 1840 states and 2490 transitions. [2020-09-21 10:08:44,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-21 10:08:44,127 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 100 [2020-09-21 10:08:44,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:08:44,135 INFO L225 Difference]: With dead ends: 1840 [2020-09-21 10:08:44,135 INFO L226 Difference]: Without dead ends: 1103 [2020-09-21 10:08:44,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-21 10:08:44,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-21 10:08:44,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1024. [2020-09-21 10:08:44,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-09-21 10:08:44,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1298 transitions. [2020-09-21 10:08:44,384 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1298 transitions. Word has length 100 [2020-09-21 10:08:44,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:08:44,385 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1298 transitions. [2020-09-21 10:08:44,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 10:08:44,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1298 transitions. [2020-09-21 10:08:44,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-21 10:08:44,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:08:44,389 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:08:44,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:08:44,390 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 10:08:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:08:44,390 INFO L82 PathProgramCache]: Analyzing trace with hash -950611836, now seen corresponding path program 1 times [2020-09-21 10:08:44,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:08:44,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1658034078] [2020-09-21 10:08:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:08:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 10:08:44,492 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 10:08:44,493 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 10:08:44,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:08:44,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:08:44 BoogieIcfgContainer [2020-09-21 10:08:44,531 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:08:44,533 INFO L168 Benchmark]: Toolchain (without parser) took 32734.17 ms. Allocated memory was 140.5 MB in the beginning and 653.8 MB in the end (delta: 513.3 MB). Free memory was 100.9 MB in the beginning and 244.7 MB in the end (delta: -143.7 MB). Peak memory consumption was 369.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:08:44,534 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:08:44,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.09 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 167.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:08:44,535 INFO L168 Benchmark]: Boogie Preprocessor took 137.92 ms. Allocated memory is still 204.5 MB. Free memory was 167.4 MB in the beginning and 162.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. [2020-09-21 10:08:44,536 INFO L168 Benchmark]: RCFGBuilder took 1379.58 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 162.7 MB in the beginning and 179.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:08:44,537 INFO L168 Benchmark]: TraceAbstraction took 30421.54 ms. Allocated memory was 237.0 MB in the beginning and 653.8 MB in the end (delta: 416.8 MB). Free memory was 179.4 MB in the beginning and 244.7 MB in the end (delta: -65.3 MB). Peak memory consumption was 351.5 MB. Max. memory is 7.1 GB. [2020-09-21 10:08:44,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.09 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 167.4 MB in the end (delta: -67.1 MB). Peak memory consumption was 25.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.92 ms. Allocated memory is still 204.5 MB. Free memory was 167.4 MB in the beginning and 162.7 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1379.58 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 162.7 MB in the beginning and 179.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 30421.54 ms. Allocated memory was 237.0 MB in the beginning and 653.8 MB in the end (delta: 416.8 MB). Free memory was 179.4 MB in the beginning and 244.7 MB in the end (delta: -65.3 MB). Peak memory consumption was 351.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1022]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L510] int __SELECTED_FEATURE_base ; [L511] int __SELECTED_FEATURE_highWaterSensor ; [L512] int __SELECTED_FEATURE_lowWaterSensor ; [L513] int __SELECTED_FEATURE_methaneQuery ; [L514] int __SELECTED_FEATURE_methaneAlarm ; [L515] int __SELECTED_FEATURE_stopCommand ; [L516] int __SELECTED_FEATURE_startCommand ; [L517] int __GUIDSL_ROOT_PRODUCTION ; [L605] int pumpRunning = 0; [L606] int systemActive = 1; [L1027] int waterLevel = 1; [L1028] int methaneLevelCritical = 0; [L487] int retValue_acc ; [L488] int tmp ; [L492] CALL select_helpers() [L968] __GUIDSL_ROOT_PRODUCTION = 1 [L492] RET select_helpers() [L493] CALL select_features() [L953] __SELECTED_FEATURE_base = 1 [L954] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L954] RET, EXPR select_one() [L954] __SELECTED_FEATURE_highWaterSensor = select_one() [L955] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L955] RET, EXPR select_one() [L955] __SELECTED_FEATURE_lowWaterSensor = select_one() [L956] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L956] RET, EXPR select_one() [L956] __SELECTED_FEATURE_methaneQuery = select_one() [L957] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L957] RET, EXPR select_one() [L957] __SELECTED_FEATURE_methaneAlarm = select_one() [L958] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L958] RET, EXPR select_one() [L958] __SELECTED_FEATURE_stopCommand = select_one() [L959] CALL, EXPR select_one() [L939] int retValue_acc ; [L940] int choice = __VERIFIER_nondet_int(); [L943] retValue_acc = choice [L944] return (retValue_acc); [L959] RET, EXPR select_one() [L959] __SELECTED_FEATURE_startCommand = select_one() [L493] RET select_features() [L494] CALL, EXPR valid_product() [L973] int retValue_acc ; [L976] retValue_acc = __SELECTED_FEATURE_base [L977] return (retValue_acc); [L494] RET, EXPR valid_product() [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) [L498] FCALL setup() [L499] CALL runTest() [L478] CALL test() [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 [L530] COND TRUE 1 [L532] COND TRUE splverifierCounter < 4 [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) [L542] CALL waterRise() [L1045] COND TRUE waterLevel < 2 [L1046] waterLevel = waterLevel + 1 [L542] RET waterRise() [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND FALSE !(\read(tmp___2)) [L570] tmp___1 = __VERIFIER_nondet_int() [L572] COND TRUE \read(tmp___1) [L573] COND TRUE \read(__SELECTED_FEATURE_stopCommand) [L575] CALL stopSystem() [L917] COND FALSE !(\read(pumpRunning)) [L924] systemActive = 0 [L575] RET stopSystem() [L585] CALL timeShift() [L613] COND FALSE !(\read(pumpRunning)) [L620] COND FALSE !(\read(systemActive)) [L628] CALL __utac_acc__Specification3_spec__1() [L985] int tmp ; [L986] int tmp___0 ; [L987] int tmp___1 ; [L991] CALL, EXPR isMethaneLevelCritical() [L1066] int retValue_acc ; [L1069] retValue_acc = methaneLevelCritical [L1070] return (retValue_acc); [L991] RET, EXPR isMethaneLevelCritical() [L991] tmp = isMethaneLevelCritical() [L993] COND FALSE !(\read(tmp)) [L997] CALL, EXPR getWaterLevel() [L1098] int retValue_acc ; [L1101] retValue_acc = waterLevel [L1102] return (retValue_acc); [L997] RET, EXPR getWaterLevel() [L997] tmp___0 = getWaterLevel() [L999] COND TRUE tmp___0 == 2 [L1001] CALL, EXPR isPumpRunning() [L831] int retValue_acc ; [L834] retValue_acc = pumpRunning [L835] return (retValue_acc); [L1001] RET, EXPR isPumpRunning() [L1001] tmp___1 = isPumpRunning() [L1003] COND FALSE !(\read(tmp___1)) [L1007] CALL __automaton_fail() [L1022] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 48 procedures, 301 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 30.2s, OverallIterations: 6, TraceHistogramMax: 6, AutomataDifference: 25.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 845 SDtfs, 3115 SDslu, 268 SDs, 0 SdLazy, 4701 SolverSat, 2596 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1024occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 361 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 555 NumberOfCodeBlocks, 555 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 450 ConstructedInterpolants, 0 QuantifiedInterpolants, 167384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 225/225 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...