/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:39:00,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:39:00,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:39:00,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:39:00,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:39:00,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:39:00,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:39:00,624 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:39:00,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:39:00,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:39:00,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:39:00,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:39:00,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:39:00,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:39:00,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:39:00,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:39:00,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:39:00,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:39:00,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:39:00,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:39:00,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:39:00,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:39:00,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:39:00,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:39:00,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:39:00,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:39:00,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:39:00,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:39:00,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:39:00,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:39:00,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:39:00,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:39:00,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:39:00,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:39:00,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:39:00,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:39:00,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:39:00,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:39:00,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:39:00,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:39:00,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:39:00,655 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 02:39:00,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:39:00,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:39:00,679 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:39:00,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:39:00,680 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:39:00,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:39:00,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:39:00,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:39:00,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:39:00,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:39:00,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:39:00,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:39:00,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:39:00,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:39:00,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:39:00,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:39:00,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:39:00,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:39:00,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:39:00,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:39:00,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:39:00,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:39:00,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:39:00,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:39:00,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:39:00,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:39:00,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:39:00,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:39:00,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:39:00,685 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=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 02:39:00,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:39:01,009 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:39:01,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:39:01,015 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:39:01,015 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:39:01,016 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-19 02:39:01,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30c5f5911/88d33b9a6f2c4a0381f6aa3e1f2ee9f1/FLAG9cdf215f0 [2020-08-19 02:39:01,613 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:39:01,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-19 02:39:01,628 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30c5f5911/88d33b9a6f2c4a0381f6aa3e1f2ee9f1/FLAG9cdf215f0 [2020-08-19 02:39:01,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/30c5f5911/88d33b9a6f2c4a0381f6aa3e1f2ee9f1 [2020-08-19 02:39:01,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:39:01,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:39:01,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:01,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:39:01,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:39:01,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28777adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:01, skipping insertion in model container [2020-08-19 02:39:01,909 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:39:01" (1/1) ... [2020-08-19 02:39:01,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:39:01,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:39:02,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:02,430 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:39:02,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:39:02,548 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:39:02,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02 WrapperNode [2020-08-19 02:39:02,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:39:02,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:39:02,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:39:02,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:39:02,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,631 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (1/1) ... [2020-08-19 02:39:02,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:39:02,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:39:02,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:39:02,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:39:02,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (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 02:39:02,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 02:39:02,697 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 02:39:02,698 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 02:39:02,699 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:02,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 02:39:02,701 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 02:39:02,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 02:39:02,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:39:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:39:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 02:39:02,703 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 02:39:02,704 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 02:39:02,705 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 02:39:02,706 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 02:39:02,707 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:39:02,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:39:02,709 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 02:39:02,710 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:39:02,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:39:02,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:39:03,791 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:39:03,791 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 02:39:03,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:03 BoogieIcfgContainer [2020-08-19 02:39:03,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:39:03,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:39:03,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:39:03,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:39:03,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:39:01" (1/3) ... [2020-08-19 02:39:03,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4547fd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:03, skipping insertion in model container [2020-08-19 02:39:03,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:39:02" (2/3) ... [2020-08-19 02:39:03,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4547fd16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:39:03, skipping insertion in model container [2020-08-19 02:39:03,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:39:03" (3/3) ... [2020-08-19 02:39:03,805 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-08-19 02:39:03,816 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:39:03,824 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:39:03,838 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:39:03,863 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:39:03,864 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:39:03,864 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:39:03,864 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:39:03,865 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:39:03,865 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:39:03,865 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:39:03,865 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:39:03,888 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-19 02:39:03,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 02:39:03,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:03,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:03,900 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:03,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:03,907 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2020-08-19 02:39:03,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:03,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [629535683] [2020-08-19 02:39:03,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:04,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,618 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:04,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:04,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:39:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:04,758 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 02:39:04,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [629535683] [2020-08-19 02:39:04,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:04,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:39:04,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372674824] [2020-08-19 02:39:04,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:39:04,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:04,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:39:04,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:04,788 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-08-19 02:39:05,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:05,955 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-19 02:39:05,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:39:05,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 02:39:05,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:05,971 INFO L225 Difference]: With dead ends: 320 [2020-08-19 02:39:05,972 INFO L226 Difference]: Without dead ends: 173 [2020-08-19 02:39:05,977 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:39:05,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-19 02:39:06,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-19 02:39:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-19 02:39:06,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-19 02:39:06,071 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-19 02:39:06,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:06,072 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-19 02:39:06,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:39:06,072 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-19 02:39:06,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 02:39:06,076 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:06,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:06,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:39:06,077 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2020-08-19 02:39:06,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:06,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528017434] [2020-08-19 02:39:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,414 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:06,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:06,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:06,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:06,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:39:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:06,457 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 02:39:06,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528017434] [2020-08-19 02:39:06,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:06,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 02:39:06,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296939577] [2020-08-19 02:39:06,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:39:06,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:06,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:39:06,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:39:06,461 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-19 02:39:06,899 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:07,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:07,760 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-19 02:39:07,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:39:07,762 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 02:39:07,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:07,765 INFO L225 Difference]: With dead ends: 243 [2020-08-19 02:39:07,765 INFO L226 Difference]: Without dead ends: 157 [2020-08-19 02:39:07,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:39:07,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-19 02:39:07,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-19 02:39:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-19 02:39:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-19 02:39:07,808 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-19 02:39:07,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:07,809 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-19 02:39:07,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:39:07,809 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-19 02:39:07,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:39:07,811 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:07,811 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 02:39:07,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:39:07,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:07,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:07,812 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2020-08-19 02:39:07,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:07,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277652415] [2020-08-19 02:39:07,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,135 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:08,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 02:39:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 02:39:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:08,249 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 02:39:08,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277652415] [2020-08-19 02:39:08,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:08,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:39:08,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826387573] [2020-08-19 02:39:08,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:39:08,254 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:08,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:39:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:39:08,255 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2020-08-19 02:39:08,549 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:09,242 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:10,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:10,762 INFO L93 Difference]: Finished difference Result 440 states and 546 transitions. [2020-08-19 02:39:10,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:39:10,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-19 02:39:10,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:10,769 INFO L225 Difference]: With dead ends: 440 [2020-08-19 02:39:10,769 INFO L226 Difference]: Without dead ends: 335 [2020-08-19 02:39:10,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:39:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-19 02:39:10,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-08-19 02:39:10,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-19 02:39:10,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-19 02:39:10,854 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-19 02:39:10,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:10,854 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-19 02:39:10,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:39:10,855 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-19 02:39:10,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 02:39:10,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:10,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:39:10,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:39:10,858 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:10,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:10,858 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2020-08-19 02:39:10,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:10,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206025485] [2020-08-19 02:39:10,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:10,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,199 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:11,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:11,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:11,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:11,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 02:39:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 02:39:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:11,326 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 02:39:11,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206025485] [2020-08-19 02:39:11,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:11,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 02:39:11,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61822403] [2020-08-19 02:39:11,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:11,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:11,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:11,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:11,329 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2020-08-19 02:39:11,739 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:12,045 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:12,292 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:12,518 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:13,026 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:13,827 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:14,246 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:14,552 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:14,846 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:15,170 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:15,558 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:15,925 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:16,323 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:17,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:17,967 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2020-08-19 02:39:17,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 02:39:17,968 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 02:39:17,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:17,983 INFO L225 Difference]: With dead ends: 1101 [2020-08-19 02:39:17,983 INFO L226 Difference]: Without dead ends: 853 [2020-08-19 02:39:17,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 02:39:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-19 02:39:18,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2020-08-19 02:39:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-08-19 02:39:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2020-08-19 02:39:18,182 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2020-08-19 02:39:18,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:18,183 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2020-08-19 02:39:18,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:18,183 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2020-08-19 02:39:18,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:39:18,187 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:18,187 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] [2020-08-19 02:39:18,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:39:18,188 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:18,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2020-08-19 02:39:18,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:18,189 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168574766] [2020-08-19 02:39:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,476 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:18,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 02:39:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 02:39:18,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 02:39:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:18,598 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 02:39:18,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168574766] [2020-08-19 02:39:18,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:39:18,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:39:18,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352912909] [2020-08-19 02:39:18,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:39:18,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:18,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:39:18,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:39:18,604 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2020-08-19 02:39:18,945 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:20,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:20,959 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2020-08-19 02:39:20,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:20,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 02:39:20,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:20,968 INFO L225 Difference]: With dead ends: 1819 [2020-08-19 02:39:20,971 INFO L226 Difference]: Without dead ends: 1087 [2020-08-19 02:39:20,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:39:20,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-08-19 02:39:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2020-08-19 02:39:21,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-08-19 02:39:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2020-08-19 02:39:21,211 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2020-08-19 02:39:21,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:21,212 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2020-08-19 02:39:21,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:39:21,212 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2020-08-19 02:39:21,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 02:39:21,217 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:21,219 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:21,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:39:21,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:21,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:21,220 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2020-08-19 02:39:21,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:21,220 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [335379979] [2020-08-19 02:39:21,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:21,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,565 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:21,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:21,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:21,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:21,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:39:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 02:39:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 02:39:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 02:39:21,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:21,714 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 02:39:21,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [335379979] [2020-08-19 02:39:21,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:21,715 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:21,715 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399228169] [2020-08-19 02:39:21,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:21,716 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:21,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:21,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:21,717 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 10 states. [2020-08-19 02:39:22,324 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 02:39:22,947 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:24,821 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:26,708 INFO L93 Difference]: Finished difference Result 1937 states and 2549 transitions. [2020-08-19 02:39:26,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 02:39:26,709 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 02:39:26,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:26,719 INFO L225 Difference]: With dead ends: 1937 [2020-08-19 02:39:26,719 INFO L226 Difference]: Without dead ends: 1216 [2020-08-19 02:39:26,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 02:39:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-08-19 02:39:26,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1103. [2020-08-19 02:39:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-19 02:39:26,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1367 transitions. [2020-08-19 02:39:26,971 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1367 transitions. Word has length 89 [2020-08-19 02:39:26,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:26,974 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1367 transitions. [2020-08-19 02:39:26,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:26,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1367 transitions. [2020-08-19 02:39:26,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:26,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:26,981 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:26,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:39:26,981 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:26,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:26,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1811638207, now seen corresponding path program 1 times [2020-08-19 02:39:26,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:26,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859464202] [2020-08-19 02:39:26,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:27,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,254 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:27,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:27,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:27,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:27,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:27,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:27,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:27,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:27,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:27,449 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:27,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859464202] [2020-08-19 02:39:27,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:27,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:39:27,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636156412] [2020-08-19 02:39:27,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:39:27,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:27,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:39:27,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:39:27,452 INFO L87 Difference]: Start difference. First operand 1103 states and 1367 transitions. Second operand 9 states. [2020-08-19 02:39:28,449 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:28,669 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:39:28,949 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:29,914 INFO L93 Difference]: Finished difference Result 2034 states and 2650 transitions. [2020-08-19 02:39:29,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:39:29,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-08-19 02:39:29,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:29,927 INFO L225 Difference]: With dead ends: 2034 [2020-08-19 02:39:29,927 INFO L226 Difference]: Without dead ends: 1229 [2020-08-19 02:39:29,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:29,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-08-19 02:39:30,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1103. [2020-08-19 02:39:30,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-19 02:39:30,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1365 transitions. [2020-08-19 02:39:30,230 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1365 transitions. Word has length 134 [2020-08-19 02:39:30,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:30,231 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1365 transitions. [2020-08-19 02:39:30,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:39:30,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1365 transitions. [2020-08-19 02:39:30,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 02:39:30,235 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:30,235 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:30,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:39:30,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:30,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:30,236 INFO L82 PathProgramCache]: Analyzing trace with hash 622271142, now seen corresponding path program 1 times [2020-08-19 02:39:30,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:30,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941498307] [2020-08-19 02:39:30,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,506 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:30,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:30,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:30,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:39:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 02:39:30,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-19 02:39:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 02:39:30,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 02:39:30,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941498307] [2020-08-19 02:39:30,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:30,661 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:30,661 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084528597] [2020-08-19 02:39:30,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:30,662 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:30,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:30,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:30,662 INFO L87 Difference]: Start difference. First operand 1103 states and 1365 transitions. Second operand 10 states. [2020-08-19 02:39:31,877 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:32,117 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:32,381 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:32,611 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:33,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:33,713 INFO L93 Difference]: Finished difference Result 2316 states and 2962 transitions. [2020-08-19 02:39:33,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:39:33,717 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-19 02:39:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:33,725 INFO L225 Difference]: With dead ends: 2316 [2020-08-19 02:39:33,725 INFO L226 Difference]: Without dead ends: 1237 [2020-08-19 02:39:33,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 02:39:33,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-08-19 02:39:33,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1123. [2020-08-19 02:39:33,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-19 02:39:33,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1387 transitions. [2020-08-19 02:39:33,986 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1387 transitions. Word has length 130 [2020-08-19 02:39:33,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:33,987 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1387 transitions. [2020-08-19 02:39:33,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:33,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1387 transitions. [2020-08-19 02:39:33,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:33,993 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:33,993 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:33,993 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:39:33,994 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:33,994 INFO L82 PathProgramCache]: Analyzing trace with hash 669135741, now seen corresponding path program 1 times [2020-08-19 02:39:33,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:33,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [165970714] [2020-08-19 02:39:33,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,268 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:34,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:34,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:34,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:34,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:34,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:34,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:34,456 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:39:34,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [165970714] [2020-08-19 02:39:34,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:34,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:34,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104206893] [2020-08-19 02:39:34,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:34,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:34,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:34,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:34,459 INFO L87 Difference]: Start difference. First operand 1123 states and 1387 transitions. Second operand 10 states. [2020-08-19 02:39:36,245 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:36,487 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 02:39:36,719 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:36,949 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:37,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:37,422 INFO L93 Difference]: Finished difference Result 2082 states and 2656 transitions. [2020-08-19 02:39:37,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:39:37,423 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 02:39:37,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:37,432 INFO L225 Difference]: With dead ends: 2082 [2020-08-19 02:39:37,432 INFO L226 Difference]: Without dead ends: 1273 [2020-08-19 02:39:37,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:39:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-08-19 02:39:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1159. [2020-08-19 02:39:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-19 02:39:37,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1435 transitions. [2020-08-19 02:39:37,667 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1435 transitions. Word has length 134 [2020-08-19 02:39:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:37,669 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1435 transitions. [2020-08-19 02:39:37,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:37,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1435 transitions. [2020-08-19 02:39:37,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:37,675 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:37,675 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:37,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:39:37,676 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:37,677 INFO L82 PathProgramCache]: Analyzing trace with hash 159662651, now seen corresponding path program 1 times [2020-08-19 02:39:37,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:37,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1655557185] [2020-08-19 02:39:37,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,142 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:38,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:38,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:38,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:38,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:38,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:38,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:38,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-19 02:39:38,288 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1655557185] [2020-08-19 02:39:38,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:38,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:39:38,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444404941] [2020-08-19 02:39:38,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:39:38,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:38,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:39:38,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:39:38,290 INFO L87 Difference]: Start difference. First operand 1159 states and 1435 transitions. Second operand 10 states. [2020-08-19 02:39:38,693 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:40,495 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:40,804 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:41,026 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:41,249 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:41,518 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:42,124 INFO L93 Difference]: Finished difference Result 1294 states and 1661 transitions. [2020-08-19 02:39:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 02:39:42,125 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-19 02:39:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:42,133 INFO L225 Difference]: With dead ends: 1294 [2020-08-19 02:39:42,134 INFO L226 Difference]: Without dead ends: 1291 [2020-08-19 02:39:42,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 02:39:42,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2020-08-19 02:39:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1159. [2020-08-19 02:39:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-19 02:39:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1430 transitions. [2020-08-19 02:39:42,367 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1430 transitions. Word has length 134 [2020-08-19 02:39:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:42,368 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1430 transitions. [2020-08-19 02:39:42,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:39:42,369 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1430 transitions. [2020-08-19 02:39:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-19 02:39:42,373 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:42,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:42,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:39:42,374 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:42,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:42,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1152526356, now seen corresponding path program 1 times [2020-08-19 02:39:42,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:42,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618683007] [2020-08-19 02:39:42,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:42,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,732 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:42,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:42,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 02:39:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-19 02:39:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 02:39:42,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-19 02:39:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:42,999 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:39:43,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618683007] [2020-08-19 02:39:43,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:43,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:43,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741843911] [2020-08-19 02:39:43,001 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:43,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:43,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:43,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:43,002 INFO L87 Difference]: Start difference. First operand 1159 states and 1430 transitions. Second operand 12 states. [2020-08-19 02:39:43,898 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:44,559 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:45,137 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:45,414 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:45,654 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:45,881 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 02:39:46,160 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:46,425 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:48,340 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:50,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:50,005 INFO L93 Difference]: Finished difference Result 2783 states and 3743 transitions. [2020-08-19 02:39:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-19 02:39:50,006 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-19 02:39:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:50,019 INFO L225 Difference]: With dead ends: 2783 [2020-08-19 02:39:50,019 INFO L226 Difference]: Without dead ends: 1944 [2020-08-19 02:39:50,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-19 02:39:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-08-19 02:39:50,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1551. [2020-08-19 02:39:50,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1551 states. [2020-08-19 02:39:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1551 states to 1551 states and 1933 transitions. [2020-08-19 02:39:50,424 INFO L78 Accepts]: Start accepts. Automaton has 1551 states and 1933 transitions. Word has length 138 [2020-08-19 02:39:50,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:50,427 INFO L479 AbstractCegarLoop]: Abstraction has 1551 states and 1933 transitions. [2020-08-19 02:39:50,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 1551 states and 1933 transitions. [2020-08-19 02:39:50,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-19 02:39:50,432 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:50,433 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:50,433 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:39:50,433 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash -782495877, now seen corresponding path program 1 times [2020-08-19 02:39:50,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:50,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429657169] [2020-08-19 02:39:50,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,724 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:50,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 02:39:50,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:50,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:50,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:50,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 02:39:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-19 02:39:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:50,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:50,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:50,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 02:39:50,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 02:39:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:50,943 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-08-19 02:39:50,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429657169] [2020-08-19 02:39:50,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:50,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 02:39:50,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796144683] [2020-08-19 02:39:50,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 02:39:50,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:50,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 02:39:50,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 02:39:50,953 INFO L87 Difference]: Start difference. First operand 1551 states and 1933 transitions. Second operand 12 states. [2020-08-19 02:39:51,601 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:51,851 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:52,088 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:52,793 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:53,077 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:53,380 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:39:54,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:39:54,515 INFO L93 Difference]: Finished difference Result 2923 states and 3762 transitions. [2020-08-19 02:39:54,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 02:39:54,516 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 134 [2020-08-19 02:39:54,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:39:54,523 INFO L225 Difference]: With dead ends: 2923 [2020-08-19 02:39:54,523 INFO L226 Difference]: Without dead ends: 1396 [2020-08-19 02:39:54,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 02:39:54,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2020-08-19 02:39:54,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1328. [2020-08-19 02:39:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-19 02:39:54,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1625 transitions. [2020-08-19 02:39:54,793 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1625 transitions. Word has length 134 [2020-08-19 02:39:54,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:39:54,793 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1625 transitions. [2020-08-19 02:39:54,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 02:39:54,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1625 transitions. [2020-08-19 02:39:54,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-19 02:39:54,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:39:54,799 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:39:54,799 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:39:54,799 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:39:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:39:54,800 INFO L82 PathProgramCache]: Analyzing trace with hash 2082208677, now seen corresponding path program 2 times [2020-08-19 02:39:54,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:39:54,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789701969] [2020-08-19 02:39:54,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:39:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,139 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 02:39:55,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:39:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:55,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 02:39:55,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:39:55,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:39:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:39:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 02:39:55,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 02:39:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 02:39:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 02:39:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:39:55,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 02:39:55,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-19 02:39:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 02:39:55,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:39:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 02:39:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 02:39:55,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-19 02:39:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 02:39:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:39:55,459 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-19 02:39:55,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789701969] [2020-08-19 02:39:55,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:39:55,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 02:39:55,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688383323] [2020-08-19 02:39:55,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 02:39:55,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:39:55,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 02:39:55,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-19 02:39:55,461 INFO L87 Difference]: Start difference. First operand 1328 states and 1625 transitions. Second operand 13 states. [2020-08-19 02:39:56,632 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:56,930 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 02:39:58,856 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-19 02:39:59,127 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:39:59,357 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189