/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 [2020-08-22 04:31:59,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:31:59,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:31:59,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:31:59,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:31:59,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:31:59,572 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:31:59,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:31:59,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:31:59,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:31:59,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:31:59,579 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:31:59,579 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:31:59,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:31:59,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:31:59,582 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:31:59,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:31:59,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:31:59,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:31:59,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:31:59,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:31:59,590 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:31:59,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:31:59,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:31:59,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:31:59,596 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:31:59,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:31:59,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:31:59,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:31:59,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:31:59,598 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:31:59,599 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:31:59,600 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:31:59,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:31:59,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:31:59,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:31:59,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:31:59,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:31:59,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:31:59,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:31:59,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:31:59,605 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 04:31:59,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:31:59,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:31:59,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:31:59,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:31:59,630 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:31:59,630 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:31:59,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:31:59,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:31:59,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:31:59,631 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:31:59,631 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:31:59,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:31:59,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:31:59,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:31:59,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:31:59,632 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:31:59,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:31:59,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:31:59,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:31:59,633 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:31:59,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:31:59,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:31:59,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:31:59,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:31:59,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:31:59,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:31:59,950 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:31:59,953 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:31:59,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:31:59,958 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:31:59,959 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-22 04:32:00,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edf7afb4/9e13de03622044dd9ce6a2c875bbf34c/FLAGbc89c3bff [2020-08-22 04:32:00,599 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:32:00,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product45.cil.c [2020-08-22 04:32:00,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edf7afb4/9e13de03622044dd9ce6a2c875bbf34c/FLAGbc89c3bff [2020-08-22 04:32:00,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3edf7afb4/9e13de03622044dd9ce6a2c875bbf34c [2020-08-22 04:32:00,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:32:00,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:32:00,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:00,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:32:00,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:32:00,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:00" (1/1) ... [2020-08-22 04:32:00,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184fc857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:00, skipping insertion in model container [2020-08-22 04:32:00,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:32:00" (1/1) ... [2020-08-22 04:32:00,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:32:00,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:32:01,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:01,424 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:32:01,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:32:01,571 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:32:01,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01 WrapperNode [2020-08-22 04:32:01,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:32:01,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:32:01,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:32:01,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:32:01,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... [2020-08-22 04:32:01,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:32:01,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:32:01,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:32:01,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:32:01,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:32:01,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 04:32:01,733 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 04:32:01,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:01,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 04:32:01,736 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 04:32:01,737 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 04:32:01,738 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 04:32:01,739 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 04:32:01,740 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 04:32:01,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:32:01,742 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 04:32:01,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:32:01,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 04:32:01,745 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:32:01,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 04:32:01,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:32:02,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:32:02,811 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 04:32:02,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:02 BoogieIcfgContainer [2020-08-22 04:32:02,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:32:02,818 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:32:02,818 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:32:02,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:32:02,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:32:00" (1/3) ... [2020-08-22 04:32:02,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74702285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:02, skipping insertion in model container [2020-08-22 04:32:02,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:32:01" (2/3) ... [2020-08-22 04:32:02,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74702285 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:32:02, skipping insertion in model container [2020-08-22 04:32:02,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:32:02" (3/3) ... [2020-08-22 04:32:02,825 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2020-08-22 04:32:02,836 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:32:02,844 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:32:02,858 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:32:02,883 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:32:02,884 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:32:02,884 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:32:02,884 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:32:02,884 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:32:02,885 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:32:02,885 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:32:02,885 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:32:02,907 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states. [2020-08-22 04:32:02,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 04:32:02,916 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:02,918 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:02,918 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:02,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:02,924 INFO L82 PathProgramCache]: Analyzing trace with hash 261309835, now seen corresponding path program 1 times [2020-08-22 04:32:02,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:02,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263009389] [2020-08-22 04:32:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,570 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:03,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:03,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:03,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:03,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 04:32:03,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:03,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:03,650 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263009389] [2020-08-22 04:32:03,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:03,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 04:32:03,653 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845212151] [2020-08-22 04:32:03,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 04:32:03,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:03,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 04:32:03,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:03,677 INFO L87 Difference]: Start difference. First operand 176 states. Second operand 3 states. [2020-08-22 04:32:04,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:04,835 INFO L93 Difference]: Finished difference Result 309 states and 402 transitions. [2020-08-22 04:32:04,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:32:04,838 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 04:32:04,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:04,853 INFO L225 Difference]: With dead ends: 309 [2020-08-22 04:32:04,853 INFO L226 Difference]: Without dead ends: 167 [2020-08-22 04:32:04,858 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 04:32:04,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-08-22 04:32:04,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 133. [2020-08-22 04:32:04,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-08-22 04:32:04,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2020-08-22 04:32:04,950 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 46 [2020-08-22 04:32:04,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:04,951 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2020-08-22 04:32:04,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 04:32:04,951 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2020-08-22 04:32:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 04:32:04,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:04,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:04,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:32:04,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1021856254, now seen corresponding path program 1 times [2020-08-22 04:32:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:04,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853822966] [2020-08-22 04:32:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,305 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:05,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 04:32:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 04:32:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:05,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853822966] [2020-08-22 04:32:05,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:05,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:32:05,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388582426] [2020-08-22 04:32:05,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:32:05,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:05,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:32:05,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:32:05,354 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 4 states. [2020-08-22 04:32:05,753 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:06,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:06,729 INFO L93 Difference]: Finished difference Result 242 states and 293 transitions. [2020-08-22 04:32:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 04:32:06,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 04:32:06,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:06,736 INFO L225 Difference]: With dead ends: 242 [2020-08-22 04:32:06,736 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 04:32:06,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:32:06,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 04:32:06,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-22 04:32:06,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 04:32:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2020-08-22 04:32:06,803 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 47 [2020-08-22 04:32:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:06,804 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2020-08-22 04:32:06,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:32:06,804 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2020-08-22 04:32:06,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 04:32:06,813 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:06,813 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] [2020-08-22 04:32:06,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:32:06,813 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:06,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:06,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1136847733, now seen corresponding path program 1 times [2020-08-22 04:32:06,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:06,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735329197] [2020-08-22 04:32:06,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,271 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:07,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:07,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 04:32:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 04:32:07,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:07,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:07,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735329197] [2020-08-22 04:32:07,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:07,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 04:32:07,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620480408] [2020-08-22 04:32:07,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 04:32:07,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:07,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 04:32:07,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 04:32:07,406 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand 8 states. [2020-08-22 04:32:07,740 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:08,040 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:08,333 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:08,572 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:09,767 INFO L93 Difference]: Finished difference Result 251 states and 307 transitions. [2020-08-22 04:32:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 04:32:09,767 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 04:32:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:09,771 INFO L225 Difference]: With dead ends: 251 [2020-08-22 04:32:09,772 INFO L226 Difference]: Without dead ends: 151 [2020-08-22 04:32:09,773 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 [2020-08-22 04:32:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-22 04:32:09,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-08-22 04:32:09,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-08-22 04:32:09,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 143 transitions. [2020-08-22 04:32:09,810 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 143 transitions. Word has length 51 [2020-08-22 04:32:09,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:09,811 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 143 transitions. [2020-08-22 04:32:09,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 04:32:09,811 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 143 transitions. [2020-08-22 04:32:09,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-22 04:32:09,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:09,812 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] [2020-08-22 04:32:09,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 04:32:09,813 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:09,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:09,813 INFO L82 PathProgramCache]: Analyzing trace with hash -629251764, now seen corresponding path program 1 times [2020-08-22 04:32:09,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:09,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522854762] [2020-08-22 04:32:09,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:09,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,088 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:10,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:10,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:10,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:32:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:10,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-22 04:32:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-22 04:32:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:10,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:10,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522854762] [2020-08-22 04:32:10,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:10,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 04:32:10,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628491246] [2020-08-22 04:32:10,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 04:32:10,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:10,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 04:32:10,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 04:32:10,168 INFO L87 Difference]: Start difference. First operand 124 states and 143 transitions. Second operand 6 states. [2020-08-22 04:32:10,494 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:11,765 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:12,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:12,452 INFO L93 Difference]: Finished difference Result 351 states and 430 transitions. [2020-08-22 04:32:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:12,453 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-08-22 04:32:12,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:12,456 INFO L225 Difference]: With dead ends: 351 [2020-08-22 04:32:12,456 INFO L226 Difference]: Without dead ends: 251 [2020-08-22 04:32:12,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:32:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-08-22 04:32:12,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2020-08-22 04:32:12,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-08-22 04:32:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 237 transitions. [2020-08-22 04:32:12,501 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 237 transitions. Word has length 64 [2020-08-22 04:32:12,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:12,502 INFO L479 AbstractCegarLoop]: Abstraction has 210 states and 237 transitions. [2020-08-22 04:32:12,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 04:32:12,502 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 237 transitions. [2020-08-22 04:32:12,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-08-22 04:32:12,504 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:12,504 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 04:32:12,504 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 04:32:12,504 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:12,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:12,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1171048631, now seen corresponding path program 1 times [2020-08-22 04:32:12,505 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:12,505 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1972959903] [2020-08-22 04:32:12,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:12,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,821 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:12,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:12,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-08-22 04:32:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:12,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:12,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:12,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-08-22 04:32:12,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-22 04:32:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:12,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 04:32:12,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1972959903] [2020-08-22 04:32:12,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:32:12,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 04:32:12,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691652772] [2020-08-22 04:32:12,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:12,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:12,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:12,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:12,947 INFO L87 Difference]: Start difference. First operand 210 states and 237 transitions. Second operand 12 states. [2020-08-22 04:32:13,349 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:13,717 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:13,970 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:14,205 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:14,721 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:15,625 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:15,911 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:16,166 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:16,412 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:16,724 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:17,022 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 04:32:18,293 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:18,701 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:19,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:19,342 INFO L93 Difference]: Finished difference Result 739 states and 942 transitions. [2020-08-22 04:32:19,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 04:32:19,343 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 78 [2020-08-22 04:32:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:19,349 INFO L225 Difference]: With dead ends: 739 [2020-08-22 04:32:19,350 INFO L226 Difference]: Without dead ends: 553 [2020-08-22 04:32:19,351 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 [2020-08-22 04:32:19,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2020-08-22 04:32:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 495. [2020-08-22 04:32:19,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2020-08-22 04:32:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 577 transitions. [2020-08-22 04:32:19,457 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 577 transitions. Word has length 78 [2020-08-22 04:32:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:19,457 INFO L479 AbstractCegarLoop]: Abstraction has 495 states and 577 transitions. [2020-08-22 04:32:19,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 577 transitions. [2020-08-22 04:32:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-22 04:32:19,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:19,462 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] [2020-08-22 04:32:19,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 04:32:19,462 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:19,463 INFO L82 PathProgramCache]: Analyzing trace with hash 2053602902, now seen corresponding path program 1 times [2020-08-22 04:32:19,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:19,463 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104428497] [2020-08-22 04:32:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,721 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:19,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:32:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:19,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 04:32:19,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-22 04:32:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-22 04:32:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 04:32:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 04:32:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:19,972 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-22 04:32:19,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104428497] [2020-08-22 04:32:19,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:19,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 04:32:19,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907025520] [2020-08-22 04:32:19,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:32:19,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:19,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:32:19,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:32:19,976 INFO L87 Difference]: Start difference. First operand 495 states and 577 transitions. Second operand 11 states. [2020-08-22 04:32:20,536 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 04:32:21,049 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:22,735 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 04:32:24,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:24,228 INFO L93 Difference]: Finished difference Result 964 states and 1200 transitions. [2020-08-22 04:32:24,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-22 04:32:24,229 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 136 [2020-08-22 04:32:24,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:24,235 INFO L225 Difference]: With dead ends: 964 [2020-08-22 04:32:24,235 INFO L226 Difference]: Without dead ends: 610 [2020-08-22 04:32:24,237 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 [2020-08-22 04:32:24,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2020-08-22 04:32:24,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 571. [2020-08-22 04:32:24,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-08-22 04:32:24,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 684 transitions. [2020-08-22 04:32:24,383 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 684 transitions. Word has length 136 [2020-08-22 04:32:24,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:24,384 INFO L479 AbstractCegarLoop]: Abstraction has 571 states and 684 transitions. [2020-08-22 04:32:24,384 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:32:24,384 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 684 transitions. [2020-08-22 04:32:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 04:32:24,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:24,396 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] [2020-08-22 04:32:24,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 04:32:24,399 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:24,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1503231471, now seen corresponding path program 1 times [2020-08-22 04:32:24,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:24,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [257732214] [2020-08-22 04:32:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,696 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:24,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:32:24,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:32:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:32:24,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:32:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 04:32:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 04:32:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 04:32:24,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [257732214] [2020-08-22 04:32:24,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:24,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 04:32:24,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535488527] [2020-08-22 04:32:24,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 04:32:24,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:24,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 04:32:24,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 04:32:24,974 INFO L87 Difference]: Start difference. First operand 571 states and 684 transitions. Second operand 10 states. [2020-08-22 04:32:26,158 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:26,413 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 04:32:26,660 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:26,934 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:28,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:28,066 INFO L93 Difference]: Finished difference Result 1175 states and 1478 transitions. [2020-08-22 04:32:28,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 04:32:28,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 141 [2020-08-22 04:32:28,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:28,073 INFO L225 Difference]: With dead ends: 1175 [2020-08-22 04:32:28,073 INFO L226 Difference]: Without dead ends: 628 [2020-08-22 04:32:28,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-22 04:32:28,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-08-22 04:32:28,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 586. [2020-08-22 04:32:28,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2020-08-22 04:32:28,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 701 transitions. [2020-08-22 04:32:28,219 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 701 transitions. Word has length 141 [2020-08-22 04:32:28,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:28,220 INFO L479 AbstractCegarLoop]: Abstraction has 586 states and 701 transitions. [2020-08-22 04:32:28,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 04:32:28,220 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 701 transitions. [2020-08-22 04:32:28,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-08-22 04:32:28,222 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:28,226 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] [2020-08-22 04:32:28,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 04:32:28,226 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:28,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:28,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1474731181, now seen corresponding path program 1 times [2020-08-22 04:32:28,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:28,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068949536] [2020-08-22 04:32:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,480 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:28,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:28,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 04:32:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:28,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:28,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:28,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:28,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:32:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:32:28,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-22 04:32:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:28,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:32:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-08-22 04:32:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 04:32:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:28,683 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-08-22 04:32:28,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068949536] [2020-08-22 04:32:28,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:28,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:32:28,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480677698] [2020-08-22 04:32:28,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:28,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:28,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:28,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:28,685 INFO L87 Difference]: Start difference. First operand 586 states and 701 transitions. Second operand 12 states. [2020-08-22 04:32:29,196 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:29,453 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:29,686 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:30,214 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:30,441 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:30,664 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:31,605 INFO L93 Difference]: Finished difference Result 1061 states and 1310 transitions. [2020-08-22 04:32:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 04:32:31,606 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 141 [2020-08-22 04:32:31,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:31,611 INFO L225 Difference]: With dead ends: 1061 [2020-08-22 04:32:31,611 INFO L226 Difference]: Without dead ends: 499 [2020-08-22 04:32:31,614 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 [2020-08-22 04:32:31,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-08-22 04:32:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 475. [2020-08-22 04:32:31,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-08-22 04:32:31,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 565 transitions. [2020-08-22 04:32:31,775 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 565 transitions. Word has length 141 [2020-08-22 04:32:31,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:31,776 INFO L479 AbstractCegarLoop]: Abstraction has 475 states and 565 transitions. [2020-08-22 04:32:31,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:31,776 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 565 transitions. [2020-08-22 04:32:31,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-08-22 04:32:31,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:31,781 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] [2020-08-22 04:32:31,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 04:32:31,782 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:31,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash -339330766, now seen corresponding path program 1 times [2020-08-22 04:32:31,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:31,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612789129] [2020-08-22 04:32:31,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,176 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:32,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:32,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:32:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:32:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 04:32:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:32:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:32,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:32:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-22 04:32:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-08-22 04:32:32,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:32,462 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-08-22 04:32:32,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612789129] [2020-08-22 04:32:32,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:32,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-22 04:32:32,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763382576] [2020-08-22 04:32:32,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-22 04:32:32,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:32,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-22 04:32:32,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-08-22 04:32:32,465 INFO L87 Difference]: Start difference. First operand 475 states and 565 transitions. Second operand 15 states. [2020-08-22 04:32:32,874 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:33,543 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:34,391 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:34,707 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:34,976 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:35,252 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:35,563 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:35,824 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:36,370 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:32:36,866 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 190 DAG size of output: 189 [2020-08-22 04:32:37,754 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:37,986 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:38,261 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:38,551 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:39,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:39,316 INFO L93 Difference]: Finished difference Result 1250 states and 1546 transitions. [2020-08-22 04:32:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 04:32:39,317 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 145 [2020-08-22 04:32:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:39,323 INFO L225 Difference]: With dead ends: 1250 [2020-08-22 04:32:39,324 INFO L226 Difference]: Without dead ends: 799 [2020-08-22 04:32:39,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 249 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=255, Invalid=1005, Unknown=0, NotChecked=0, Total=1260 [2020-08-22 04:32:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2020-08-22 04:32:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 760. [2020-08-22 04:32:39,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-22 04:32:39,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2020-08-22 04:32:39,473 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 145 [2020-08-22 04:32:39,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:39,473 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2020-08-22 04:32:39,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-22 04:32:39,474 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2020-08-22 04:32:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 04:32:39,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:39,476 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] [2020-08-22 04:32:39,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 04:32:39,477 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:39,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:39,477 INFO L82 PathProgramCache]: Analyzing trace with hash 929993430, now seen corresponding path program 1 times [2020-08-22 04:32:39,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:39,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560200001] [2020-08-22 04:32:39,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:39,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,730 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:39,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:32:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:39,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:39,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:32:39,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-22 04:32:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-08-22 04:32:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-08-22 04:32:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:32:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 04:32:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 04:32:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-08-22 04:32:39,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560200001] [2020-08-22 04:32:39,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:39,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-22 04:32:39,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138855900] [2020-08-22 04:32:39,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-22 04:32:39,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:39,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-22 04:32:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-08-22 04:32:39,949 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand 11 states. [2020-08-22 04:32:40,345 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:41,957 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:42,199 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:42,461 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:42,730 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:42,968 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 04:32:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:43,426 INFO L93 Difference]: Finished difference Result 888 states and 1101 transitions. [2020-08-22 04:32:43,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-22 04:32:43,427 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 149 [2020-08-22 04:32:43,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:43,433 INFO L225 Difference]: With dead ends: 888 [2020-08-22 04:32:43,433 INFO L226 Difference]: Without dead ends: 885 [2020-08-22 04:32:43,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=153, Invalid=399, Unknown=0, NotChecked=0, Total=552 [2020-08-22 04:32:43,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2020-08-22 04:32:43,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 760. [2020-08-22 04:32:43,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 760 states. [2020-08-22 04:32:43,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 886 transitions. [2020-08-22 04:32:43,564 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 886 transitions. Word has length 149 [2020-08-22 04:32:43,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:43,565 INFO L479 AbstractCegarLoop]: Abstraction has 760 states and 886 transitions. [2020-08-22 04:32:43,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-22 04:32:43,565 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 886 transitions. [2020-08-22 04:32:43,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-22 04:32:43,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:43,567 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] [2020-08-22 04:32:43,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 04:32:43,568 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:43,568 INFO L82 PathProgramCache]: Analyzing trace with hash 432107741, now seen corresponding path program 1 times [2020-08-22 04:32:43,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:43,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1666605018] [2020-08-22 04:32:43,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:43,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,849 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 04:32:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:32:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:32:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 04:32:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:43,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 04:32:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 04:32:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-22 04:32:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:43,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:43,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 04:32:43,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 04:32:43,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 04:32:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:43,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-22 04:32:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-22 04:32:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 04:32:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 04:32:43,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 04:32:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:43,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-22 04:32:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:44,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-22 04:32:44,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:32:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 04:32:44,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1666605018] [2020-08-22 04:32:44,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 04:32:44,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 04:32:44,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491536316] [2020-08-22 04:32:44,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 04:32:44,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:32:44,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 04:32:44,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 04:32:44,065 INFO L87 Difference]: Start difference. First operand 760 states and 886 transitions. Second operand 12 states. [2020-08-22 04:32:44,433 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:44,976 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:45,740 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:46,010 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:46,243 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:46,467 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 04:32:46,732 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:46,982 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 04:32:48,197 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 04:32:48,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:32:48,881 INFO L93 Difference]: Finished difference Result 1786 states and 2220 transitions. [2020-08-22 04:32:48,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 04:32:48,881 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 149 [2020-08-22 04:32:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:32:48,890 INFO L225 Difference]: With dead ends: 1786 [2020-08-22 04:32:48,891 INFO L226 Difference]: Without dead ends: 1168 [2020-08-22 04:32:48,894 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 04:32:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2020-08-22 04:32:49,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1022. [2020-08-22 04:32:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1022 states. [2020-08-22 04:32:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1207 transitions. [2020-08-22 04:32:49,155 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1207 transitions. Word has length 149 [2020-08-22 04:32:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:32:49,156 INFO L479 AbstractCegarLoop]: Abstraction has 1022 states and 1207 transitions. [2020-08-22 04:32:49,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 04:32:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1207 transitions. [2020-08-22 04:32:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-08-22 04:32:49,162 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:32:49,163 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] [2020-08-22 04:32:49,163 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 04:32:49,163 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:32:49,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:32:49,164 INFO L82 PathProgramCache]: Analyzing trace with hash -706947900, now seen corresponding path program 2 times [2020-08-22 04:32:49,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:32:49,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058929799] [2020-08-22 04:32:49,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:32:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:32:49,262 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:32:49,262 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:32:49,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 04:32:49,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:32:49 BoogieIcfgContainer [2020-08-22 04:32:49,318 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:32:49,319 INFO L168 Benchmark]: Toolchain (without parser) took 48417.31 ms. Allocated memory was 139.5 MB in the beginning and 767.6 MB in the end (delta: 628.1 MB). Free memory was 100.1 MB in the beginning and 344.8 MB in the end (delta: -244.8 MB). Peak memory consumption was 383.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:49,320 INFO L168 Benchmark]: CDTParser took 1.28 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:32:49,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.08 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 169.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:49,322 INFO L168 Benchmark]: Boogie Preprocessor took 87.28 ms. Allocated memory is still 201.9 MB. Free memory was 169.1 MB in the beginning and 165.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:49,326 INFO L168 Benchmark]: RCFGBuilder took 1156.44 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 165.1 MB in the beginning and 195.5 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:49,329 INFO L168 Benchmark]: TraceAbstraction took 46500.15 ms. Allocated memory was 234.9 MB in the beginning and 767.6 MB in the end (delta: 532.7 MB). Free memory was 195.5 MB in the beginning and 344.8 MB in the end (delta: -149.3 MB). Peak memory consumption was 383.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:32:49,333 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.28 ms. Allocated memory is still 139.5 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 669.08 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 99.9 MB in the beginning and 169.1 MB in the end (delta: -69.2 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.28 ms. Allocated memory is still 201.9 MB. Free memory was 169.1 MB in the beginning and 165.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1156.44 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 165.1 MB in the beginning and 195.5 MB in the end (delta: -30.4 MB). Peak memory consumption was 83.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46500.15 ms. Allocated memory was 234.9 MB in the beginning and 767.6 MB in the end (delta: 532.7 MB). Free memory was 195.5 MB in the beginning and 344.8 MB in the end (delta: -149.3 MB). Peak memory consumption was 383.4 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: 46.3s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 39.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1433 SDtfs, 4039 SDslu, 1697 SDs, 0 SdLazy, 9659 SolverSat, 2674 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 605 GetRequests, 415 SyntacticMatches, 7 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 18.9s 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, 4.8s 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...