/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:20:58,872 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:20:58,875 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:20:58,912 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:20:58,913 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:20:58,914 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:20:58,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:20:58,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:20:58,918 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:20:58,919 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:20:58,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:20:58,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:20:58,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:20:58,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:20:58,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:20:58,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:20:58,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:20:58,926 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:20:58,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:20:58,929 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:20:58,931 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:20:58,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:20:58,932 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:20:58,933 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:20:58,936 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:20:58,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:20:58,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:20:58,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:20:58,937 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:20:58,938 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:20:58,938 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:20:58,939 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:20:58,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:20:58,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:20:58,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:20:58,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:20:58,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:20:58,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:20:58,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:20:58,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:20:58,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:20:58,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 05:20:58,967 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:20:58,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:20:58,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:20:58,969 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:20:58,969 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:20:58,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:20:58,969 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:20:58,969 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:20:58,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:20:58,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:20:58,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:20:58,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:20:58,970 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:20:58,971 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:20:58,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:20:58,971 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:20:58,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:20:58,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:20:58,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:20:58,972 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:20:58,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:20:58,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:20:58,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:20:58,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:20:58,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:20:58,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:20:58,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:20:58,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:20:58,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:20:58,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-22 05:20:59,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:20:59,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:20:59,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:20:59,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:20:59,304 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:20:59,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-22 05:20:59,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e329ae7/ef75c93133434456aa010d96d54b5b58/FLAG193d2bb06 [2020-08-22 05:20:59,981 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:20:59,982 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product52.cil.c [2020-08-22 05:21:00,012 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e329ae7/ef75c93133434456aa010d96d54b5b58/FLAG193d2bb06 [2020-08-22 05:21:00,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9e329ae7/ef75c93133434456aa010d96d54b5b58 [2020-08-22 05:21:00,232 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:21:00,234 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:21:00,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:00,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:21:00,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:21:00,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:00,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3af6e236 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00, skipping insertion in model container [2020-08-22 05:21:00,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:00,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:21:00,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:21:00,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:00,816 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:21:00,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:21:00,998 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:21:00,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00 WrapperNode [2020-08-22 05:21:00,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:21:00,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:21:00,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:21:00,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:21:01,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... [2020-08-22 05:21:01,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:21:01,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:21:01,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:21:01,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:21:01,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:21:01,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:21:01,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:21:01,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-22 05:21:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-22 05:21:01,154 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-22 05:21:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-22 05:21:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-22 05:21:01,155 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-22 05:21:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-22 05:21:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-22 05:21:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-22 05:21:01,156 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-22 05:21:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:01,157 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-22 05:21:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-22 05:21:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-22 05:21:01,158 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-22 05:21:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-22 05:21:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-22 05:21:01,159 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-22 05:21:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-22 05:21:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-22 05:21:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-22 05:21:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-22 05:21:01,162 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-22 05:21:01,163 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-22 05:21:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-22 05:21:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-22 05:21:01,164 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:21:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:21:01,164 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-22 05:21:01,165 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-22 05:21:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-22 05:21:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:21:01,166 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-22 05:21:01,167 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-22 05:21:01,168 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-22 05:21:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-22 05:21:01,169 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-22 05:21:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:21:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:21:01,170 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-22 05:21:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:21:01,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-22 05:21:01,172 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-22 05:21:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:21:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-22 05:21:01,173 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-22 05:21:01,174 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:21:01,175 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:21:02,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:21:02,212 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 05:21:02,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:02 BoogieIcfgContainer [2020-08-22 05:21:02,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:21:02,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:21:02,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:21:02,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:21:02,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:21:00" (1/3) ... [2020-08-22 05:21:02,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9ac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:02, skipping insertion in model container [2020-08-22 05:21:02,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:21:00" (2/3) ... [2020-08-22 05:21:02,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b9ac62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:21:02, skipping insertion in model container [2020-08-22 05:21:02,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:21:02" (3/3) ... [2020-08-22 05:21:02,226 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product52.cil.c [2020-08-22 05:21:02,236 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:21:02,244 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:21:02,258 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:21:02,283 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:21:02,283 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:21:02,283 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:21:02,283 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:21:02,283 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:21:02,283 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:21:02,284 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:21:02,284 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:21:02,307 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states. [2020-08-22 05:21:02,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-22 05:21:02,317 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:02,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:02,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:02,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:02,326 INFO L82 PathProgramCache]: Analyzing trace with hash -583894042, now seen corresponding path program 1 times [2020-08-22 05:21:02,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:02,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945871157] [2020-08-22 05:21:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,097 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:03,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:21:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:03,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945871157] [2020-08-22 05:21:03,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:03,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 05:21:03,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956210804] [2020-08-22 05:21:03,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 05:21:03,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:03,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 05:21:03,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 05:21:03,197 INFO L87 Difference]: Start difference. First operand 181 states. Second operand 3 states. [2020-08-22 05:21:04,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:04,396 INFO L93 Difference]: Finished difference Result 320 states and 417 transitions. [2020-08-22 05:21:04,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 05:21:04,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-22 05:21:04,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:04,413 INFO L225 Difference]: With dead ends: 320 [2020-08-22 05:21:04,413 INFO L226 Difference]: Without dead ends: 173 [2020-08-22 05:21:04,418 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 [2020-08-22 05:21:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-08-22 05:21:04,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2020-08-22 05:21:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-22 05:21:04,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 162 transitions. [2020-08-22 05:21:04,576 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 162 transitions. Word has length 46 [2020-08-22 05:21:04,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:04,578 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 162 transitions. [2020-08-22 05:21:04,578 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 05:21:04,578 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 162 transitions. [2020-08-22 05:21:04,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-22 05:21:04,592 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:04,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:21:04,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:21:04,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:04,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:04,594 INFO L82 PathProgramCache]: Analyzing trace with hash 2008699999, now seen corresponding path program 1 times [2020-08-22 05:21:04,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:04,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311468658] [2020-08-22 05:21:04,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:04,986 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:04,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:05,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:05,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:21:05,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:05,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:05,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311468658] [2020-08-22 05:21:05,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:05,028 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:21:05,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499516876] [2020-08-22 05:21:05,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:21:05,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:05,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:21:05,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:21:05,031 INFO L87 Difference]: Start difference. First operand 138 states and 162 transitions. Second operand 4 states. [2020-08-22 05:21:05,478 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:06,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:06,415 INFO L93 Difference]: Finished difference Result 243 states and 296 transitions. [2020-08-22 05:21:06,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 05:21:06,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-22 05:21:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:06,420 INFO L225 Difference]: With dead ends: 243 [2020-08-22 05:21:06,420 INFO L226 Difference]: Without dead ends: 157 [2020-08-22 05:21:06,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:21:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-08-22 05:21:06,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 129. [2020-08-22 05:21:06,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-08-22 05:21:06,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 150 transitions. [2020-08-22 05:21:06,459 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 150 transitions. Word has length 47 [2020-08-22 05:21:06,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:06,460 INFO L479 AbstractCegarLoop]: Abstraction has 129 states and 150 transitions. [2020-08-22 05:21:06,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:21:06,460 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 150 transitions. [2020-08-22 05:21:06,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:21:06,462 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:06,462 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] [2020-08-22 05:21:06,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:21:06,463 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:06,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:06,463 INFO L82 PathProgramCache]: Analyzing trace with hash 940393630, now seen corresponding path program 1 times [2020-08-22 05:21:06,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:06,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [694653810] [2020-08-22 05:21:06,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,776 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:06,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:06,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 05:21:06,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 05:21:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:06,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [694653810] [2020-08-22 05:21:06,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:06,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 05:21:06,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642996714] [2020-08-22 05:21:06,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 05:21:06,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:06,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 05:21:06,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 05:21:06,844 INFO L87 Difference]: Start difference. First operand 129 states and 150 transitions. Second operand 5 states. [2020-08-22 05:21:07,117 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:07,775 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:09,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:09,253 INFO L93 Difference]: Finished difference Result 440 states and 546 transitions. [2020-08-22 05:21:09,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 05:21:09,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-22 05:21:09,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:09,260 INFO L225 Difference]: With dead ends: 440 [2020-08-22 05:21:09,260 INFO L226 Difference]: Without dead ends: 335 [2020-08-22 05:21:09,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:21:09,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2020-08-22 05:21:09,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 272. [2020-08-22 05:21:09,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-08-22 05:21:09,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 328 transitions. [2020-08-22 05:21:09,344 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 328 transitions. Word has length 52 [2020-08-22 05:21:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:09,344 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 328 transitions. [2020-08-22 05:21:09,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 05:21:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 328 transitions. [2020-08-22 05:21:09,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 05:21:09,347 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:09,347 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] [2020-08-22 05:21:09,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:21:09,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:09,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:09,348 INFO L82 PathProgramCache]: Analyzing trace with hash -885199720, now seen corresponding path program 1 times [2020-08-22 05:21:09,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:09,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447335276] [2020-08-22 05:21:09,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,724 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:09,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:09,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:09,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:09,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-22 05:21:09,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-22 05:21:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:09,890 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447335276] [2020-08-22 05:21:09,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:09,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 05:21:09,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481050729] [2020-08-22 05:21:09,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:09,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:09,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:09,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:09,892 INFO L87 Difference]: Start difference. First operand 272 states and 328 transitions. Second operand 12 states. [2020-08-22 05:21:10,304 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:10,622 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:10,882 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:11,120 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:11,638 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:12,518 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:12,949 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:13,244 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:13,529 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:13,850 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:14,235 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:14,572 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:14,957 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:16,596 INFO L93 Difference]: Finished difference Result 1101 states and 1516 transitions. [2020-08-22 05:21:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-22 05:21:16,597 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-22 05:21:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:16,607 INFO L225 Difference]: With dead ends: 1101 [2020-08-22 05:21:16,608 INFO L226 Difference]: Without dead ends: 853 [2020-08-22 05:21:16,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-22 05:21:16,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2020-08-22 05:21:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 756. [2020-08-22 05:21:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2020-08-22 05:21:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 962 transitions. [2020-08-22 05:21:16,838 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 962 transitions. Word has length 57 [2020-08-22 05:21:16,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:16,839 INFO L479 AbstractCegarLoop]: Abstraction has 756 states and 962 transitions. [2020-08-22 05:21:16,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:16,839 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 962 transitions. [2020-08-22 05:21:16,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:21:16,842 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:16,842 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] [2020-08-22 05:21:16,843 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:21:16,843 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:16,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:16,843 INFO L82 PathProgramCache]: Analyzing trace with hash -1426922018, now seen corresponding path program 1 times [2020-08-22 05:21:16,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:16,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147700299] [2020-08-22 05:21:16,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,143 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:17,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:17,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-22 05:21:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-22 05:21:17,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-22 05:21:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:17,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:21:17,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147700299] [2020-08-22 05:21:17,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:21:17,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:21:17,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732063968] [2020-08-22 05:21:17,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:21:17,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:17,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:21:17,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:21:17,235 INFO L87 Difference]: Start difference. First operand 756 states and 962 transitions. Second operand 6 states. [2020-08-22 05:21:17,681 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:19,647 INFO L93 Difference]: Finished difference Result 1819 states and 2481 transitions. [2020-08-22 05:21:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:21:19,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:21:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:19,656 INFO L225 Difference]: With dead ends: 1819 [2020-08-22 05:21:19,659 INFO L226 Difference]: Without dead ends: 1087 [2020-08-22 05:21:19,663 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 [2020-08-22 05:21:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1087 states. [2020-08-22 05:21:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1087 to 996. [2020-08-22 05:21:19,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-08-22 05:21:19,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1256 transitions. [2020-08-22 05:21:19,873 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1256 transitions. Word has length 61 [2020-08-22 05:21:19,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:19,874 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1256 transitions. [2020-08-22 05:21:19,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:21:19,874 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1256 transitions. [2020-08-22 05:21:19,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-22 05:21:19,878 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:19,879 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] [2020-08-22 05:21:19,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:21:19,879 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:19,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:19,879 INFO L82 PathProgramCache]: Analyzing trace with hash -50759536, now seen corresponding path program 1 times [2020-08-22 05:21:19,880 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:19,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [18945868] [2020-08-22 05:21:19,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,199 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:20,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:20,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:20,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:21:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-22 05:21:20,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-22 05:21:20,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-22 05:21:20,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:20,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-22 05:21:20,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [18945868] [2020-08-22 05:21:20,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:20,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:20,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155089949] [2020-08-22 05:21:20,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:20,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:20,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:20,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:20,395 INFO L87 Difference]: Start difference. First operand 996 states and 1256 transitions. Second operand 10 states. [2020-08-22 05:21:21,121 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-22 05:21:21,705 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:23,645 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:25,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:25,462 INFO L93 Difference]: Finished difference Result 1937 states and 2549 transitions. [2020-08-22 05:21:25,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-22 05:21:25,463 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-22 05:21:25,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:25,471 INFO L225 Difference]: With dead ends: 1937 [2020-08-22 05:21:25,472 INFO L226 Difference]: Without dead ends: 1216 [2020-08-22 05:21:25,475 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 [2020-08-22 05:21:25,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2020-08-22 05:21:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1103. [2020-08-22 05:21:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 05:21:25,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1367 transitions. [2020-08-22 05:21:25,673 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1367 transitions. Word has length 89 [2020-08-22 05:21:25,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:25,674 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1367 transitions. [2020-08-22 05:21:25,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:25,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1367 transitions. [2020-08-22 05:21:25,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 05:21:25,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:25,679 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] [2020-08-22 05:21:25,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:21:25,679 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:25,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:25,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1811638207, now seen corresponding path program 1 times [2020-08-22 05:21:25,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:25,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006912009] [2020-08-22 05:21:25,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,946 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:25,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:25,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:26,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:26,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:26,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:26,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:26,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:21:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:21:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:26,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:26,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:21:26,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 05:21:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:26,154 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:21:26,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006912009] [2020-08-22 05:21:26,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:26,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 05:21:26,155 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020093435] [2020-08-22 05:21:26,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 05:21:26,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:26,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 05:21:26,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 05:21:26,157 INFO L87 Difference]: Start difference. First operand 1103 states and 1367 transitions. Second operand 9 states. [2020-08-22 05:21:27,198 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:27,462 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:21:27,737 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:28,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:28,660 INFO L93 Difference]: Finished difference Result 2034 states and 2650 transitions. [2020-08-22 05:21:28,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 05:21:28,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-08-22 05:21:28,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:28,673 INFO L225 Difference]: With dead ends: 2034 [2020-08-22 05:21:28,673 INFO L226 Difference]: Without dead ends: 1229 [2020-08-22 05:21:28,679 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 [2020-08-22 05:21:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-08-22 05:21:28,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1103. [2020-08-22 05:21:28,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2020-08-22 05:21:28,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1365 transitions. [2020-08-22 05:21:28,968 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1365 transitions. Word has length 134 [2020-08-22 05:21:28,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:28,968 INFO L479 AbstractCegarLoop]: Abstraction has 1103 states and 1365 transitions. [2020-08-22 05:21:28,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 05:21:28,969 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1365 transitions. [2020-08-22 05:21:28,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 05:21:28,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:28,973 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] [2020-08-22 05:21:28,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:21:28,973 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:28,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:28,974 INFO L82 PathProgramCache]: Analyzing trace with hash 622271142, now seen corresponding path program 1 times [2020-08-22 05:21:28,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:28,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219462992] [2020-08-22 05:21:28,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,293 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:29,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:29,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:29,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:29,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:29,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:29,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:21:29,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 05:21:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:21:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:21:29,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:29,460 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:21:29,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219462992] [2020-08-22 05:21:29,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:29,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:29,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143952129] [2020-08-22 05:21:29,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:29,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:29,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:29,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:29,465 INFO L87 Difference]: Start difference. First operand 1103 states and 1365 transitions. Second operand 10 states. [2020-08-22 05:21:30,839 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:31,072 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:31,341 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:31,583 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:32,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:32,676 INFO L93 Difference]: Finished difference Result 2316 states and 2962 transitions. [2020-08-22 05:21:32,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:21:32,676 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 130 [2020-08-22 05:21:32,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:32,683 INFO L225 Difference]: With dead ends: 2316 [2020-08-22 05:21:32,684 INFO L226 Difference]: Without dead ends: 1237 [2020-08-22 05:21:32,687 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 [2020-08-22 05:21:32,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2020-08-22 05:21:32,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1123. [2020-08-22 05:21:32,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2020-08-22 05:21:32,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1387 transitions. [2020-08-22 05:21:32,908 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1387 transitions. Word has length 130 [2020-08-22 05:21:32,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:32,909 INFO L479 AbstractCegarLoop]: Abstraction has 1123 states and 1387 transitions. [2020-08-22 05:21:32,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:32,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1387 transitions. [2020-08-22 05:21:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 05:21:32,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:32,914 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] [2020-08-22 05:21:32,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 05:21:32,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:32,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:32,915 INFO L82 PathProgramCache]: Analyzing trace with hash 669135741, now seen corresponding path program 1 times [2020-08-22 05:21:32,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:32,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44215594] [2020-08-22 05:21:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,188 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:33,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:33,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:33,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:33,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:21:33,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:21:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:33,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:21:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 05:21:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:33,387 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:21:33,387 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44215594] [2020-08-22 05:21:33,387 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:33,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:33,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039389653] [2020-08-22 05:21:33,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:33,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:33,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:33,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:33,389 INFO L87 Difference]: Start difference. First operand 1123 states and 1387 transitions. Second operand 10 states. [2020-08-22 05:21:35,163 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:35,404 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-22 05:21:35,637 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:35,870 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:36,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:36,357 INFO L93 Difference]: Finished difference Result 2082 states and 2656 transitions. [2020-08-22 05:21:36,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 05:21:36,358 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-22 05:21:36,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:36,368 INFO L225 Difference]: With dead ends: 2082 [2020-08-22 05:21:36,368 INFO L226 Difference]: Without dead ends: 1273 [2020-08-22 05:21:36,372 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 [2020-08-22 05:21:36,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2020-08-22 05:21:36,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1159. [2020-08-22 05:21:36,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1159 states. [2020-08-22 05:21:36,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1435 transitions. [2020-08-22 05:21:36,667 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1435 transitions. Word has length 134 [2020-08-22 05:21:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:36,668 INFO L479 AbstractCegarLoop]: Abstraction has 1159 states and 1435 transitions. [2020-08-22 05:21:36,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:36,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1435 transitions. [2020-08-22 05:21:36,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-22 05:21:36,673 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:36,673 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] [2020-08-22 05:21:36,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 05:21:36,674 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:36,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:36,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1029704414, now seen corresponding path program 1 times [2020-08-22 05:21:36,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:36,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053643071] [2020-08-22 05:21:36,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,910 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:36,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:36,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 05:21:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:36,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:37,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-22 05:21:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-22 05:21:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:37,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-22 05:21:37,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-22 05:21:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:37,151 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 05:21:37,152 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053643071] [2020-08-22 05:21:37,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:37,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:37,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941269511] [2020-08-22 05:21:37,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:37,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:37,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:37,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:37,155 INFO L87 Difference]: Start difference. First operand 1159 states and 1435 transitions. Second operand 12 states. [2020-08-22 05:21:37,758 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:37,960 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:38,177 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:38,822 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:39,108 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:39,328 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:40,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:40,222 INFO L93 Difference]: Finished difference Result 2179 states and 2777 transitions. [2020-08-22 05:21:40,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 05:21:40,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 130 [2020-08-22 05:21:40,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:40,230 INFO L225 Difference]: With dead ends: 2179 [2020-08-22 05:21:40,230 INFO L226 Difference]: Without dead ends: 1044 [2020-08-22 05:21:40,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-22 05:21:40,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2020-08-22 05:21:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 986. [2020-08-22 05:21:40,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-08-22 05:21:40,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1188 transitions. [2020-08-22 05:21:40,423 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1188 transitions. Word has length 130 [2020-08-22 05:21:40,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:40,424 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1188 transitions. [2020-08-22 05:21:40,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:40,424 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1188 transitions. [2020-08-22 05:21:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-08-22 05:21:40,429 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:40,429 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] [2020-08-22 05:21:40,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 05:21:40,430 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:40,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:40,430 INFO L82 PathProgramCache]: Analyzing trace with hash 159662651, now seen corresponding path program 1 times [2020-08-22 05:21:40,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:40,431 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2104274819] [2020-08-22 05:21:40,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:40,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,734 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:21:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:21:40,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:40,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:40,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-22 05:21:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-22 05:21:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:40,876 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-22 05:21:40,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2104274819] [2020-08-22 05:21:40,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:40,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-22 05:21:40,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290296552] [2020-08-22 05:21:40,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 05:21:40,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 05:21:40,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-22 05:21:40,882 INFO L87 Difference]: Start difference. First operand 986 states and 1188 transitions. Second operand 10 states. [2020-08-22 05:21:41,370 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:43,037 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,291 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,513 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:43,735 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:44,008 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:21:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:44,500 INFO L93 Difference]: Finished difference Result 1065 states and 1310 transitions. [2020-08-22 05:21:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-22 05:21:44,501 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2020-08-22 05:21:44,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:44,507 INFO L225 Difference]: With dead ends: 1065 [2020-08-22 05:21:44,507 INFO L226 Difference]: Without dead ends: 1062 [2020-08-22 05:21:44,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-22 05:21:44,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2020-08-22 05:21:44,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 986. [2020-08-22 05:21:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 986 states. [2020-08-22 05:21:44,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 986 states to 986 states and 1183 transitions. [2020-08-22 05:21:44,688 INFO L78 Accepts]: Start accepts. Automaton has 986 states and 1183 transitions. Word has length 134 [2020-08-22 05:21:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:44,689 INFO L479 AbstractCegarLoop]: Abstraction has 986 states and 1183 transitions. [2020-08-22 05:21:44,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 05:21:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 986 states and 1183 transitions. [2020-08-22 05:21:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-08-22 05:21:44,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:44,694 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] [2020-08-22 05:21:44,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 05:21:44,695 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:44,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:44,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1152526356, now seen corresponding path program 1 times [2020-08-22 05:21:44,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:44,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219589835] [2020-08-22 05:21:44,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,982 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:44,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:44,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:45,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:45,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:45,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-22 05:21:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-22 05:21:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:45,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-22 05:21:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-08-22 05:21:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:21:45,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219589835] [2020-08-22 05:21:45,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:45,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-22 05:21:45,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765428537] [2020-08-22 05:21:45,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 05:21:45,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:45,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 05:21:45,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-22 05:21:45,198 INFO L87 Difference]: Start difference. First operand 986 states and 1183 transitions. Second operand 12 states. [2020-08-22 05:21:45,684 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:46,245 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:46,792 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,046 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,294 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,578 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-22 05:21:47,869 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:48,134 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:49,848 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:21:50,670 INFO L93 Difference]: Finished difference Result 2393 states and 3102 transitions. [2020-08-22 05:21:50,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-22 05:21:50,670 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 138 [2020-08-22 05:21:50,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:21:50,680 INFO L225 Difference]: With dead ends: 2393 [2020-08-22 05:21:50,680 INFO L226 Difference]: Without dead ends: 1590 [2020-08-22 05:21:50,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-22 05:21:50,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-08-22 05:21:50,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1328. [2020-08-22 05:21:50,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1328 states. [2020-08-22 05:21:50,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 1625 transitions. [2020-08-22 05:21:50,951 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 1625 transitions. Word has length 138 [2020-08-22 05:21:50,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:21:50,952 INFO L479 AbstractCegarLoop]: Abstraction has 1328 states and 1625 transitions. [2020-08-22 05:21:50,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 05:21:50,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 1625 transitions. [2020-08-22 05:21:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-08-22 05:21:50,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:21:50,958 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] [2020-08-22 05:21:50,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-22 05:21:50,959 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:21:50,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:21:50,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2082208677, now seen corresponding path program 2 times [2020-08-22 05:21:50,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:21:50,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511361199] [2020-08-22 05:21:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:21:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,266 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-22 05:21:51,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:21:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:51,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 05:21:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:21:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:21:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:21:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 05:21:51,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 05:21:51,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 05:21:51,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-22 05:21:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:21:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:51,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-22 05:21:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-22 05:21:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-22 05:21:51,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:21:51,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 05:21:51,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 05:21:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-08-22 05:21:51,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-22 05:21:51,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:21:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-22 05:21:51,603 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511361199] [2020-08-22 05:21:51,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:21:51,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-22 05:21:51,604 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638305532] [2020-08-22 05:21:51,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-22 05:21:51,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:21:51,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-22 05:21:51,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-22 05:21:51,606 INFO L87 Difference]: Start difference. First operand 1328 states and 1625 transitions. Second operand 13 states. [2020-08-22 05:21:52,834 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:53,115 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-22 05:21:55,044 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-22 05:21:55,305 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:55,564 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:21:55,988 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186