/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 04:12:09,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 04:12:09,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 04:12:09,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 04:12:09,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 04:12:09,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 04:12:09,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 04:12:09,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 04:12:09,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 04:12:09,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 04:12:09,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 04:12:09,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 04:12:09,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 04:12:09,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 04:12:09,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 04:12:09,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 04:12:09,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 04:12:09,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 04:12:09,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 04:12:09,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 04:12:09,633 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 04:12:09,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 04:12:09,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 04:12:09,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 04:12:09,638 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 04:12:09,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 04:12:09,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 04:12:09,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 04:12:09,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 04:12:09,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 04:12:09,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 04:12:09,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 04:12:09,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 04:12:09,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 04:12:09,645 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 04:12:09,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 04:12:09,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 04:12:09,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 04:12:09,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 04:12:09,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 04:12:09,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 04:12:09,651 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 [2020-08-19 04:12:09,698 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 04:12:09,698 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 04:12:09,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 04:12:09,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 04:12:09,705 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 04:12:09,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 04:12:09,706 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 04:12:09,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 04:12:09,706 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 04:12:09,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 04:12:09,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 04:12:09,707 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 04:12:09,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 04:12:09,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 04:12:09,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 04:12:09,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 04:12:09,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 04:12:09,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 04:12:09,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 04:12:09,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 04:12:09,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 04:12:09,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 04:12:09,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 04:12:09,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 04:12:09,713 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=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2; [2020-08-19 04:12:10,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 04:12:10,043 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 04:12:10,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 04:12:10,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 04:12:10,051 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 04:12:10,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 04:12:10,124 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d3261fa3/5eaf59c08f1547039a40a83013b3f690/FLAG6ce06e3e3 [2020-08-19 04:12:10,696 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 04:12:10,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-19 04:12:10,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d3261fa3/5eaf59c08f1547039a40a83013b3f690/FLAG6ce06e3e3 [2020-08-19 04:12:10,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d3261fa3/5eaf59c08f1547039a40a83013b3f690 [2020-08-19 04:12:10,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 04:12:10,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 04:12:10,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 04:12:10,978 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 04:12:10,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 04:12:10,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:12:10" (1/1) ... [2020-08-19 04:12:10,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c07bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:10, skipping insertion in model container [2020-08-19 04:12:10,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 04:12:10" (1/1) ... [2020-08-19 04:12:10,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 04:12:11,063 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 04:12:11,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:12:11,473 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 04:12:11,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 04:12:11,632 INFO L208 MainTranslator]: Completed translation [2020-08-19 04:12:11,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11 WrapperNode [2020-08-19 04:12:11,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 04:12:11,634 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 04:12:11,634 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 04:12:11,634 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 04:12:11,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,666 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (1/1) ... [2020-08-19 04:12:11,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 04:12:11,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 04:12:11,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 04:12:11,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 04:12:11,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (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 [2020-08-19 04:12:11,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 04:12:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 04:12:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 04:12:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:12:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:12:11,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 04:12:11,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 04:12:11,791 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 04:12:11,792 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 04:12:11,793 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 04:12:11,794 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 04:12:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 04:12:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 04:12:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 04:12:11,795 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 04:12:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 04:12:11,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-19 04:12:11,796 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 04:12:11,797 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 04:12:11,798 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 04:12:11,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 04:12:11,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 04:12:11,801 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 04:12:11,802 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-19 04:12:11,803 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 04:12:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-19 04:12:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 04:12:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 04:12:11,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 04:12:12,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 04:12:12,878 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 04:12:12,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:12:12 BoogieIcfgContainer [2020-08-19 04:12:12,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 04:12:12,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 04:12:12,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 04:12:12,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 04:12:12,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 04:12:10" (1/3) ... [2020-08-19 04:12:12,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493070fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:12:12, skipping insertion in model container [2020-08-19 04:12:12,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 04:12:11" (2/3) ... [2020-08-19 04:12:12,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493070fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 04:12:12, skipping insertion in model container [2020-08-19 04:12:12,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 04:12:12" (3/3) ... [2020-08-19 04:12:12,893 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-19 04:12:12,904 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 04:12:12,912 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 04:12:12,926 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 04:12:12,952 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 04:12:12,952 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 04:12:12,952 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 04:12:12,952 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 04:12:12,953 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 04:12:12,953 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 04:12:12,953 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 04:12:12,953 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 04:12:12,976 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-19 04:12:12,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 04:12:12,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:12,988 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] [2020-08-19 04:12:12,989 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:12,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:12,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-19 04:12:13,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:13,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883136321] [2020-08-19 04:12:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:13,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,702 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:13,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 04:12:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 04:12:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:13,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:13,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883136321] [2020-08-19 04:12:13,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:13,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 04:12:13,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948681633] [2020-08-19 04:12:13,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 04:12:13,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:13,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 04:12:13,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:12:13,831 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-19 04:12:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:15,174 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-19 04:12:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 04:12:15,176 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-19 04:12:15,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:15,192 INFO L225 Difference]: With dead ends: 344 [2020-08-19 04:12:15,192 INFO L226 Difference]: Without dead ends: 190 [2020-08-19 04:12:15,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 04:12:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-19 04:12:15,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-19 04:12:15,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-19 04:12:15,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-19 04:12:15,326 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-19 04:12:15,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:15,327 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-19 04:12:15,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 04:12:15,328 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-19 04:12:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 04:12:15,331 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:15,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:15,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 04:12:15,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:15,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:15,333 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-19 04:12:15,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:15,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931729983] [2020-08-19 04:12:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,687 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:15,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:15,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 04:12:15,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:15,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931729983] [2020-08-19 04:12:15,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:15,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 04:12:15,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584667286] [2020-08-19 04:12:15,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 04:12:15,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:15,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 04:12:15,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 04:12:15,748 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-19 04:12:16,265 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:17,306 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-19 04:12:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 04:12:17,313 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 04:12:17,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:17,317 INFO L225 Difference]: With dead ends: 289 [2020-08-19 04:12:17,317 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 04:12:17,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:12:17,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 04:12:17,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 04:12:17,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 04:12:17,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-19 04:12:17,403 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-19 04:12:17,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:17,403 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-19 04:12:17,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 04:12:17,403 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-19 04:12:17,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-19 04:12:17,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:17,417 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] [2020-08-19 04:12:17,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 04:12:17,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:17,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:17,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-19 04:12:17,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:17,418 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055712964] [2020-08-19 04:12:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:17,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,765 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:17,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:17,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 04:12:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:12:17,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:17,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:17,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055712964] [2020-08-19 04:12:17,860 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:17,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:12:17,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133629679] [2020-08-19 04:12:17,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:12:17,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:17,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:12:17,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:12:17,863 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-19 04:12:18,283 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:18,600 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:18,857 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:19,125 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:20,642 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-19 04:12:20,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 04:12:20,643 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-19 04:12:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:20,648 INFO L225 Difference]: With dead ends: 298 [2020-08-19 04:12:20,650 INFO L226 Difference]: Without dead ends: 180 [2020-08-19 04:12:20,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-19 04:12:20,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-19 04:12:20,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-19 04:12:20,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-19 04:12:20,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-19 04:12:20,692 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-19 04:12:20,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:20,693 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-19 04:12:20,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:12:20,693 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-19 04:12:20,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-19 04:12:20,695 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:20,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:20,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 04:12:20,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:20,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:20,696 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-19 04:12:20,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:20,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795752634] [2020-08-19 04:12:20,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:20,967 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:21,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:12:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:21,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-19 04:12:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-19 04:12:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:21,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795752634] [2020-08-19 04:12:21,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:21,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 04:12:21,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451727643] [2020-08-19 04:12:21,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 04:12:21,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:21,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 04:12:21,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 04:12:21,107 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-19 04:12:21,482 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:22,717 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:23,608 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-19 04:12:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:12:23,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-19 04:12:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:23,613 INFO L225 Difference]: With dead ends: 403 [2020-08-19 04:12:23,613 INFO L226 Difference]: Without dead ends: 285 [2020-08-19 04:12:23,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-19 04:12:23,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-19 04:12:23,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-19 04:12:23,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 04:12:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-19 04:12:23,660 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-19 04:12:23,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:23,661 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-19 04:12:23,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 04:12:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-19 04:12:23,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 04:12:23,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:23,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:23,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 04:12:23,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:23,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:23,664 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-19 04:12:23,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:23,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194866931] [2020-08-19 04:12:23,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:23,978 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:23,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:23,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:24,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:24,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:24,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 04:12:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-19 04:12:24,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-19 04:12:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:24,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194866931] [2020-08-19 04:12:24,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:24,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-19 04:12:24,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043682297] [2020-08-19 04:12:24,082 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 04:12:24,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:24,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 04:12:24,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-19 04:12:24,083 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-19 04:12:24,502 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:25,482 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:25,807 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:26,468 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:26,708 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:28,061 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-19 04:12:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 04:12:28,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-19 04:12:28,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:28,067 INFO L225 Difference]: With dead ends: 708 [2020-08-19 04:12:28,067 INFO L226 Difference]: Without dead ends: 497 [2020-08-19 04:12:28,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-19 04:12:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-19 04:12:28,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-19 04:12:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-19 04:12:28,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-19 04:12:28,156 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-19 04:12:28,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:28,157 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-19 04:12:28,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 04:12:28,157 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-19 04:12:28,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-19 04:12:28,159 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:28,159 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:28,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 04:12:28,160 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:28,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:28,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-19 04:12:28,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:28,161 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958693799] [2020-08-19 04:12:28,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,434 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:28,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:28,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:28,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:28,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-19 04:12:28,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-19 04:12:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:28,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 04:12:28,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1958693799] [2020-08-19 04:12:28,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:28,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:12:28,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620474089] [2020-08-19 04:12:28,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:28,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:28,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:28,584 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-19 04:12:29,036 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:30,266 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:31,450 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:31,715 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:31,968 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:32,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:32,396 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-19 04:12:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 04:12:32,398 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-19 04:12:32,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:32,403 INFO L225 Difference]: With dead ends: 930 [2020-08-19 04:12:32,404 INFO L226 Difference]: Without dead ends: 532 [2020-08-19 04:12:32,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-19 04:12:32,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-19 04:12:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-19 04:12:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-19 04:12:32,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-19 04:12:32,492 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-19 04:12:32,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:32,493 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-19 04:12:32,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:12:32,493 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-19 04:12:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:12:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:32,495 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:32,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 04:12:32,496 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:32,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-19 04:12:32,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:32,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960250042] [2020-08-19 04:12:32,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,734 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:32,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:32,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:32,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:32,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:32,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:32,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:12:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:12:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:32,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:12:32,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960250042] [2020-08-19 04:12:32,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:32,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-19 04:12:32,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079105144] [2020-08-19 04:12:32,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 04:12:32,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 04:12:32,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-19 04:12:32,944 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-19 04:12:34,056 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:34,300 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:34,554 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:34,804 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:36,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:36,195 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-19 04:12:36,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 04:12:36,198 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-19 04:12:36,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:36,204 INFO L225 Difference]: With dead ends: 937 [2020-08-19 04:12:36,204 INFO L226 Difference]: Without dead ends: 540 [2020-08-19 04:12:36,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:12:36,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-19 04:12:36,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-19 04:12:36,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-19 04:12:36,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-19 04:12:36,323 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-19 04:12:36,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:36,324 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-19 04:12:36,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 04:12:36,324 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-19 04:12:36,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:12:36,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:36,327 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:36,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 04:12:36,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:36,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:36,328 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-19 04:12:36,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:36,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358283866] [2020-08-19 04:12:36,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,624 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:36,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:36,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:36,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:36,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:12:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:12:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:36,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:12:36,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358283866] [2020-08-19 04:12:36,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:36,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 04:12:36,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767031201] [2020-08-19 04:12:36,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 04:12:36,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:36,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 04:12:36,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-19 04:12:36,829 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-19 04:12:37,548 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:37,804 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:38,049 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:38,710 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:38,976 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:39,231 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 04:12:40,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:40,778 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-19 04:12:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 04:12:40,778 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-19 04:12:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:40,781 INFO L225 Difference]: With dead ends: 957 [2020-08-19 04:12:40,781 INFO L226 Difference]: Without dead ends: 550 [2020-08-19 04:12:40,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-19 04:12:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-19 04:12:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-19 04:12:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-19 04:12:40,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-19 04:12:40,857 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-19 04:12:40,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:40,857 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-19 04:12:40,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 04:12:40,857 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-19 04:12:40,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-19 04:12:40,859 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:40,859 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:40,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 04:12:40,860 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-19 04:12:40,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:40,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [735384825] [2020-08-19 04:12:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:40,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,098 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:41,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:41,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-19 04:12:41,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 04:12:41,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:41,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:41,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-19 04:12:41,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-19 04:12:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:41,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 04:12:41,294 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [735384825] [2020-08-19 04:12:41,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 04:12:41,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 04:12:41,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033226671] [2020-08-19 04:12:41,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 04:12:41,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:41,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 04:12:41,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 04:12:41,296 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-19 04:12:41,671 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:42,244 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:44,837 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-19 04:12:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 04:12:44,838 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-19 04:12:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:44,844 INFO L225 Difference]: With dead ends: 1296 [2020-08-19 04:12:44,844 INFO L226 Difference]: Without dead ends: 881 [2020-08-19 04:12:44,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-19 04:12:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-19 04:12:44,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-19 04:12:44,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-19 04:12:44,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-19 04:12:44,998 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-19 04:12:44,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:44,999 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-19 04:12:44,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 04:12:44,999 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-19 04:12:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-19 04:12:45,002 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:45,002 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:45,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 04:12:45,003 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:45,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-19 04:12:45,004 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:45,004 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181829304] [2020-08-19 04:12:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,339 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:45,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:45,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:45,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:45,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 04:12:45,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 04:12:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:45,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:45,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-19 04:12:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-19 04:12:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:45,718 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 04:12:45,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181829304] [2020-08-19 04:12:45,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:45,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 04:12:45,720 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644087115] [2020-08-19 04:12:45,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 04:12:45,721 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:45,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 04:12:45,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-19 04:12:45,722 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-19 04:12:46,765 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:47,163 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:47,417 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:47,681 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:48,320 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:49,270 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:49,595 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:49,859 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:50,130 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:50,450 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:50,720 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:51,244 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 04:12:51,819 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-19 04:12:54,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:12:54,593 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-19 04:12:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-19 04:12:54,598 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-19 04:12:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:12:54,604 INFO L225 Difference]: With dead ends: 1572 [2020-08-19 04:12:54,604 INFO L226 Difference]: Without dead ends: 851 [2020-08-19 04:12:54,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 04:12:54,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-19 04:12:54,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-19 04:12:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-19 04:12:54,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-19 04:12:54,752 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-19 04:12:54,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:12:54,753 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-19 04:12:54,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 04:12:54,753 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-19 04:12:54,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-19 04:12:54,757 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 04:12:54,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 04:12:54,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 04:12:54,760 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 04:12:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 04:12:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-19 04:12:54,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 04:12:54,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821960643] [2020-08-19 04:12:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 04:12:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,159 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 04:12:55,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 04:12:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 04:12:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 04:12:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 04:12:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-19 04:12:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 04:12:55,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 04:12:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 04:12:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 04:12:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-19 04:12:55,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-19 04:12:55,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-19 04:12:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 04:12:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 04:12:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 04:12:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 04:12:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 04:12:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-19 04:12:55,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-19 04:12:55,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 04:12:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-19 04:12:55,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821960643] [2020-08-19 04:12:55,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 04:12:55,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 04:12:55,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435963551] [2020-08-19 04:12:55,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 04:12:55,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 04:12:55,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 04:12:55,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-19 04:12:55,541 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-19 04:12:56,147 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:56,489 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:56,768 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:57,043 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-19 04:12:57,722 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 04:12:58,822 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:59,189 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:59,487 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:12:59,763 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:00,108 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:00,398 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:01,659 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:01,901 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:02,194 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:02,447 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 04:13:03,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 04:13:03,610 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-19 04:13:03,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 04:13:03,610 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-19 04:13:03,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 04:13:03,612 INFO L225 Difference]: With dead ends: 1341 [2020-08-19 04:13:03,612 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 04:13:03,617 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-19 04:13:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 04:13:03,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 04:13:03,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 04:13:03,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 04:13:03,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-19 04:13:03,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 04:13:03,618 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 04:13:03,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 04:13:03,618 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 04:13:03,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 04:13:03,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 04:13:03,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 04:13:05,605 WARN L193 SmtUtils]: Spent 1.20 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-19 04:13:05,891 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-19 04:13:07,708 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 326 DAG size of output: 265 [2020-08-19 04:13:08,321 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 300 DAG size of output: 254 [2020-08-19 04:13:09,117 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 229 DAG size of output: 212