/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:04:27,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:04:27,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:04:27,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:04:27,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:04:27,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:04:27,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:04:27,133 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:04:27,135 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:04:27,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:04:27,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:04:27,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:04:27,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:04:27,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:04:27,146 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:04:27,148 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:04:27,149 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:04:27,150 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:04:27,152 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:04:27,160 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:04:27,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:04:27,163 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:04:27,164 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:04:27,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:04:27,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 05:04:27,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 05:04:27,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 05:04:27,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 05:04:27,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 05:04:27,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 05:04:27,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 05:04:27,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 05:04:27,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 05:04:27,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 05:04:27,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 05:04:27,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 05:04:27,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 05:04:27,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 05:04:27,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:04:27,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:04:27,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:04:27,197 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 05:04:27,238 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:04:27,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:04:27,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:04:27,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:04:27,242 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:04:27,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:04:27,242 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:04:27,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:04:27,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:04:27,243 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:04:27,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:04:27,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:04:27,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:04:27,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:04:27,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:04:27,245 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:04:27,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:04:27,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:04:27,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:04:27,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:04:27,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:04:27,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:27,249 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:04:27,251 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:04:27,251 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:04:27,252 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:04:27,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:04:27,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:04:27,253 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:04:27,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:04:27,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:04:27,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:04:27,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:04:27,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:04:27,580 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:04:27,581 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-19 05:04:27,650 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9edff8b1/cf02a2d074f6406b9d96df3fc8ff05d8/FLAGaae88f320 [2020-08-19 05:04:28,175 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:04:28,176 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2020-08-19 05:04:28,191 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9edff8b1/cf02a2d074f6406b9d96df3fc8ff05d8/FLAGaae88f320 [2020-08-19 05:04:28,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9edff8b1/cf02a2d074f6406b9d96df3fc8ff05d8 [2020-08-19 05:04:28,470 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:04:28,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:04:28,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:28,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:04:28,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:04:28,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:28" (1/1) ... [2020-08-19 05:04:28,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fa7080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:28, skipping insertion in model container [2020-08-19 05:04:28,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:04:28" (1/1) ... [2020-08-19 05:04:28,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:04:28,543 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:04:28,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:28,960 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:04:29,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:04:29,148 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:04:29,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29 WrapperNode [2020-08-19 05:04:29,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:04:29,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:04:29,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:04:29,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:04:29,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,160 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... [2020-08-19 05:04:29,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:04:29,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:04:29,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:04:29,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:04:29,243 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:04:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:04:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:04:29,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:04:29,309 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 05:04:29,310 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 05:04:29,311 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 05:04:29,312 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-19 05:04:29,313 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 05:04:29,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 05:04:29,315 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 05:04:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:04:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:04:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 05:04:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 05:04:29,315 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 05:04:29,316 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 05:04:29,317 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 05:04:29,318 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 05:04:29,319 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 05:04:29,320 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 05:04:29,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 05:04:29,322 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 05:04:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 05:04:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:04:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 05:04:29,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:04:30,332 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:04:30,333 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 05:04:30,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:30 BoogieIcfgContainer [2020-08-19 05:04:30,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:04:30,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:04:30,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:04:30,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:04:30,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:04:28" (1/3) ... [2020-08-19 05:04:30,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9b2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:30, skipping insertion in model container [2020-08-19 05:04:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:04:29" (2/3) ... [2020-08-19 05:04:30,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e9b2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:04:30, skipping insertion in model container [2020-08-19 05:04:30,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:04:30" (3/3) ... [2020-08-19 05:04:30,347 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2020-08-19 05:04:30,358 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:04:30,367 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:04:30,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:04:30,402 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:04:30,402 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:04:30,403 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:04:30,403 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:04:30,403 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:04:30,403 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:04:30,403 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:04:30,404 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:04:30,428 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-19 05:04:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 05:04:30,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:30,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:30,441 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:30,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:30,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1091923628, now seen corresponding path program 1 times [2020-08-19 05:04:30,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:30,458 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746099131] [2020-08-19 05:04:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,153 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:31,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:31,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 05:04:31,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:31,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:31,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746099131] [2020-08-19 05:04:31,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:31,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 05:04:31,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164664355] [2020-08-19 05:04:31,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 05:04:31,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:31,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 05:04:31,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:31,284 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-19 05:04:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:32,444 INFO L93 Difference]: Finished difference Result 311 states and 407 transitions. [2020-08-19 05:04:32,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 05:04:32,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 05:04:32,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:32,461 INFO L225 Difference]: With dead ends: 311 [2020-08-19 05:04:32,462 INFO L226 Difference]: Without dead ends: 168 [2020-08-19 05:04:32,467 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 05:04:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-08-19 05:04:32,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 134. [2020-08-19 05:04:32,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-08-19 05:04:32,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 158 transitions. [2020-08-19 05:04:32,564 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 158 transitions. Word has length 46 [2020-08-19 05:04:32,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:32,565 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 158 transitions. [2020-08-19 05:04:32,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 05:04:32,565 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 158 transitions. [2020-08-19 05:04:32,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 05:04:32,573 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:32,573 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:32,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:04:32,574 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:32,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:32,575 INFO L82 PathProgramCache]: Analyzing trace with hash 644500822, now seen corresponding path program 1 times [2020-08-19 05:04:32,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:32,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990437780] [2020-08-19 05:04:32,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,949 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:32,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 05:04:32,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:32,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:32,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990437780] [2020-08-19 05:04:32,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:32,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 05:04:32,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384353685] [2020-08-19 05:04:32,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 05:04:32,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 05:04:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 05:04:32,994 INFO L87 Difference]: Start difference. First operand 134 states and 158 transitions. Second operand 4 states. [2020-08-19 05:04:33,434 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:34,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:34,337 INFO L93 Difference]: Finished difference Result 238 states and 290 transitions. [2020-08-19 05:04:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:04:34,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 05:04:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:34,342 INFO L225 Difference]: With dead ends: 238 [2020-08-19 05:04:34,343 INFO L226 Difference]: Without dead ends: 152 [2020-08-19 05:04:34,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:04:34,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-08-19 05:04:34,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 125. [2020-08-19 05:04:34,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 05:04:34,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 146 transitions. [2020-08-19 05:04:34,409 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 146 transitions. Word has length 47 [2020-08-19 05:04:34,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:34,410 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 146 transitions. [2020-08-19 05:04:34,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 05:04:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 146 transitions. [2020-08-19 05:04:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:04:34,417 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:34,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:34,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:04:34,418 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:34,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:34,418 INFO L82 PathProgramCache]: Analyzing trace with hash -350015351, now seen corresponding path program 1 times [2020-08-19 05:04:34,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:34,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625632741] [2020-08-19 05:04:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,767 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:34,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:04:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:34,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:34,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625632741] [2020-08-19 05:04:34,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:34,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:04:34,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378629133] [2020-08-19 05:04:34,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:04:34,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:34,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:04:34,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:04:34,913 INFO L87 Difference]: Start difference. First operand 125 states and 146 transitions. Second operand 8 states. [2020-08-19 05:04:35,291 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:35,611 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:35,867 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:36,089 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:36,817 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:38,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:38,574 INFO L93 Difference]: Finished difference Result 427 states and 530 transitions. [2020-08-19 05:04:38,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:04:38,575 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-19 05:04:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:38,580 INFO L225 Difference]: With dead ends: 427 [2020-08-19 05:04:38,580 INFO L226 Difference]: Without dead ends: 326 [2020-08-19 05:04:38,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:04:38,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-08-19 05:04:38,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 268. [2020-08-19 05:04:38,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-19 05:04:38,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 324 transitions. [2020-08-19 05:04:38,653 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 324 transitions. Word has length 51 [2020-08-19 05:04:38,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:38,654 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 324 transitions. [2020-08-19 05:04:38,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:04:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 324 transitions. [2020-08-19 05:04:38,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 05:04:38,656 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:38,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:38,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:04:38,656 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:38,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:38,657 INFO L82 PathProgramCache]: Analyzing trace with hash -103520613, now seen corresponding path program 1 times [2020-08-19 05:04:38,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:38,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273057515] [2020-08-19 05:04:38,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:38,987 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:38,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:39,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:39,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 05:04:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 05:04:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:39,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:39,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273057515] [2020-08-19 05:04:39,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:39,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 05:04:39,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116559861] [2020-08-19 05:04:39,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:04:39,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:39,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:04:39,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:39,127 INFO L87 Difference]: Start difference. First operand 268 states and 324 transitions. Second operand 12 states. [2020-08-19 05:04:39,599 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:39,944 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:40,196 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:40,442 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:40,991 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:04:41,890 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:42,268 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:42,669 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:42,907 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:04:43,160 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:43,520 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:43,885 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:04:44,224 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:45,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:45,925 INFO L93 Difference]: Finished difference Result 1081 states and 1492 transitions. [2020-08-19 05:04:45,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:04:45,925 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 05:04:45,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:45,944 INFO L225 Difference]: With dead ends: 1081 [2020-08-19 05:04:45,944 INFO L226 Difference]: Without dead ends: 837 [2020-08-19 05:04:45,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 05:04:45,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-08-19 05:04:46,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 744. [2020-08-19 05:04:46,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-08-19 05:04:46,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 950 transitions. [2020-08-19 05:04:46,147 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 950 transitions. Word has length 57 [2020-08-19 05:04:46,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:46,148 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 950 transitions. [2020-08-19 05:04:46,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:04:46,148 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 950 transitions. [2020-08-19 05:04:46,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 05:04:46,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:46,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:46,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:04:46,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:46,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:46,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1065334495, now seen corresponding path program 1 times [2020-08-19 05:04:46,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:46,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284214091] [2020-08-19 05:04:46,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,430 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:46,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:46,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:46,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 05:04:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:04:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:04:46,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 05:04:46,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:46,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:04:46,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284214091] [2020-08-19 05:04:46,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:04:46,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:04:46,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151139524] [2020-08-19 05:04:46,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:04:46,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:46,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:04:46,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:04:46,548 INFO L87 Difference]: Start difference. First operand 744 states and 950 transitions. Second operand 6 states. [2020-08-19 05:04:46,871 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:48,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:48,793 INFO L93 Difference]: Finished difference Result 1779 states and 2437 transitions. [2020-08-19 05:04:48,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:04:48,794 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 05:04:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:48,802 INFO L225 Difference]: With dead ends: 1779 [2020-08-19 05:04:48,803 INFO L226 Difference]: Without dead ends: 1059 [2020-08-19 05:04:48,807 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:04:48,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2020-08-19 05:04:49,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 972. [2020-08-19 05:04:49,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-08-19 05:04:49,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1232 transitions. [2020-08-19 05:04:49,027 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1232 transitions. Word has length 61 [2020-08-19 05:04:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:49,027 INFO L479 AbstractCegarLoop]: Abstraction has 972 states and 1232 transitions. [2020-08-19 05:04:49,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:04:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1232 transitions. [2020-08-19 05:04:49,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-19 05:04:49,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:49,030 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] [2020-08-19 05:04:49,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:04:49,031 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash 380759586, now seen corresponding path program 1 times [2020-08-19 05:04:49,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:49,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605516831] [2020-08-19 05:04:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:49,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,352 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:49,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:49,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:49,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:04:49,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 05:04:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:04:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:04:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-19 05:04:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:49,502 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 05:04:49,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605516831] [2020-08-19 05:04:49,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:49,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:49,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927433887] [2020-08-19 05:04:49,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:49,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:49,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:49,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:49,505 INFO L87 Difference]: Start difference. First operand 972 states and 1232 transitions. Second operand 10 states. [2020-08-19 05:04:50,159 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 05:04:50,727 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:52,668 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:04:54,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:54,487 INFO L93 Difference]: Finished difference Result 1881 states and 2481 transitions. [2020-08-19 05:04:54,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:04:54,488 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-08-19 05:04:54,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:54,498 INFO L225 Difference]: With dead ends: 1881 [2020-08-19 05:04:54,498 INFO L226 Difference]: Without dead ends: 1176 [2020-08-19 05:04:54,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 05:04:54,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-08-19 05:04:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1079. [2020-08-19 05:04:54,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-19 05:04:54,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1343 transitions. [2020-08-19 05:04:54,789 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1343 transitions. Word has length 88 [2020-08-19 05:04:54,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:54,791 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1343 transitions. [2020-08-19 05:04:54,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:04:54,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1343 transitions. [2020-08-19 05:04:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 05:04:54,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:54,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:04:54,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:04:54,800 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:54,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash 2024665879, now seen corresponding path program 1 times [2020-08-19 05:04:54,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:54,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695864436] [2020-08-19 05:04:54,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,065 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:55,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:55,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:55,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:04:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:04:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:55,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:55,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:55,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:04:55,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:04:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 05:04:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:04:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 05:04:55,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695864436] [2020-08-19 05:04:55,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:55,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 05:04:55,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88081918] [2020-08-19 05:04:55,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:04:55,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:55,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:04:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:04:55,259 INFO L87 Difference]: Start difference. First operand 1079 states and 1343 transitions. Second operand 9 states. [2020-08-19 05:04:56,281 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:56,513 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:56,778 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:04:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:04:57,911 INFO L93 Difference]: Finished difference Result 1991 states and 2604 transitions. [2020-08-19 05:04:57,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:04:57,911 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2020-08-19 05:04:57,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:04:57,919 INFO L225 Difference]: With dead ends: 1991 [2020-08-19 05:04:57,919 INFO L226 Difference]: Without dead ends: 1202 [2020-08-19 05:04:57,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:04:57,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2020-08-19 05:04:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1079. [2020-08-19 05:04:58,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1079 states. [2020-08-19 05:04:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1341 transitions. [2020-08-19 05:04:58,131 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1341 transitions. Word has length 132 [2020-08-19 05:04:58,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:04:58,131 INFO L479 AbstractCegarLoop]: Abstraction has 1079 states and 1341 transitions. [2020-08-19 05:04:58,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:04:58,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1341 transitions. [2020-08-19 05:04:58,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 05:04:58,136 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:04:58,136 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] [2020-08-19 05:04:58,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:04:58,136 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:04:58,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:04:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 605263964, now seen corresponding path program 1 times [2020-08-19 05:04:58,137 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:04:58,137 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344345727] [2020-08-19 05:04:58,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:04:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,382 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:04:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:04:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:04:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:04:58,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:04:58,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:04:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:04:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:58,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:58,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:58,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:04:58,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:04:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:04:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 05:04:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:04:58,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:04:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:04:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 05:04:58,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:04:58,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:04:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 05:04:58,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344345727] [2020-08-19 05:04:58,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:04:58,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:04:58,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821447241] [2020-08-19 05:04:58,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:04:58,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:04:58,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:04:58,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:04:58,576 INFO L87 Difference]: Start difference. First operand 1079 states and 1341 transitions. Second operand 10 states. [2020-08-19 05:05:00,252 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:00,524 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 05:05:00,800 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:01,057 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:02,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:02,162 INFO L93 Difference]: Finished difference Result 2265 states and 2908 transitions. [2020-08-19 05:05:02,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 05:05:02,163 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 128 [2020-08-19 05:05:02,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:02,171 INFO L225 Difference]: With dead ends: 2265 [2020-08-19 05:05:02,171 INFO L226 Difference]: Without dead ends: 1210 [2020-08-19 05:05:02,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:05:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1210 states. [2020-08-19 05:05:02,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1210 to 1099. [2020-08-19 05:05:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1099 states. [2020-08-19 05:05:02,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1363 transitions. [2020-08-19 05:05:02,430 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1363 transitions. Word has length 128 [2020-08-19 05:05:02,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:02,431 INFO L479 AbstractCegarLoop]: Abstraction has 1099 states and 1363 transitions. [2020-08-19 05:05:02,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:05:02,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1363 transitions. [2020-08-19 05:05:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-08-19 05:05:02,437 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:02,437 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] [2020-08-19 05:05:02,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:05:02,437 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:02,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 845503710, now seen corresponding path program 1 times [2020-08-19 05:05:02,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:02,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069720629] [2020-08-19 05:05:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:02,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,715 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:02,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:02,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-08-19 05:05:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-19 05:05:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:02,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-19 05:05:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-19 05:05:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:02,933 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 05:05:02,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069720629] [2020-08-19 05:05:02,934 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:02,935 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:05:02,935 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225435712] [2020-08-19 05:05:02,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:05:02,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:02,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:05:02,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:05:02,937 INFO L87 Difference]: Start difference. First operand 1099 states and 1363 transitions. Second operand 12 states. [2020-08-19 05:05:03,979 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:04,322 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:04,555 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:05,281 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:05,558 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:05,814 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:06,951 INFO L93 Difference]: Finished difference Result 2065 states and 2639 transitions. [2020-08-19 05:05:06,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:05:06,952 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2020-08-19 05:05:06,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:06,957 INFO L225 Difference]: With dead ends: 2065 [2020-08-19 05:05:06,957 INFO L226 Difference]: Without dead ends: 990 [2020-08-19 05:05:06,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:05:06,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2020-08-19 05:05:07,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 934. [2020-08-19 05:05:07,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 934 states. [2020-08-19 05:05:07,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1134 transitions. [2020-08-19 05:05:07,217 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1134 transitions. Word has length 128 [2020-08-19 05:05:07,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:07,217 INFO L479 AbstractCegarLoop]: Abstraction has 934 states and 1134 transitions. [2020-08-19 05:05:07,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:05:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1134 transitions. [2020-08-19 05:05:07,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 05:05:07,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:07,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:07,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:05:07,222 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:07,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:07,223 INFO L82 PathProgramCache]: Analyzing trace with hash -2030061671, now seen corresponding path program 1 times [2020-08-19 05:05:07,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:07,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062118876] [2020-08-19 05:05:07,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,493 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:05:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 05:05:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:05:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:07,663 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 05:05:07,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062118876] [2020-08-19 05:05:07,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:07,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:05:07,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189233820] [2020-08-19 05:05:07,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:05:07,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:05:07,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:05:07,670 INFO L87 Difference]: Start difference. First operand 934 states and 1134 transitions. Second operand 10 states. [2020-08-19 05:05:09,512 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:09,786 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:10,042 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:10,287 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:10,674 INFO L93 Difference]: Finished difference Result 1777 states and 2214 transitions. [2020-08-19 05:05:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:05:10,675 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 05:05:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:10,681 INFO L225 Difference]: With dead ends: 1777 [2020-08-19 05:05:10,681 INFO L226 Difference]: Without dead ends: 1022 [2020-08-19 05:05:10,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:05:10,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2020-08-19 05:05:10,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 966. [2020-08-19 05:05:10,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-19 05:05:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1168 transitions. [2020-08-19 05:05:10,889 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1168 transitions. Word has length 132 [2020-08-19 05:05:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:10,890 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1168 transitions. [2020-08-19 05:05:10,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:05:10,890 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1168 transitions. [2020-08-19 05:05:10,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-08-19 05:05:10,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:10,896 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:10,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:05:10,897 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1755432535, now seen corresponding path program 1 times [2020-08-19 05:05:10,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:10,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745689039] [2020-08-19 05:05:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:10,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,274 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:11,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:11,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:11,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:11,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:11,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:11,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:05:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:11,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-08-19 05:05:11,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 05:05:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-08-19 05:05:11,449 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745689039] [2020-08-19 05:05:11,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:11,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:05:11,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517046820] [2020-08-19 05:05:11,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:05:11,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:05:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:05:11,452 INFO L87 Difference]: Start difference. First operand 966 states and 1168 transitions. Second operand 10 states. [2020-08-19 05:05:11,896 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:13,479 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:13,721 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:13,949 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:14,205 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:14,477 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:14,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:14,795 INFO L93 Difference]: Finished difference Result 1043 states and 1286 transitions. [2020-08-19 05:05:14,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:05:14,796 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 132 [2020-08-19 05:05:14,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:14,802 INFO L225 Difference]: With dead ends: 1043 [2020-08-19 05:05:14,803 INFO L226 Difference]: Without dead ends: 1040 [2020-08-19 05:05:14,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:05:14,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2020-08-19 05:05:14,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 966. [2020-08-19 05:05:14,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 966 states. [2020-08-19 05:05:14,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1163 transitions. [2020-08-19 05:05:14,983 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1163 transitions. Word has length 132 [2020-08-19 05:05:14,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:14,984 INFO L479 AbstractCegarLoop]: Abstraction has 966 states and 1163 transitions. [2020-08-19 05:05:14,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:05:14,984 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1163 transitions. [2020-08-19 05:05:14,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-08-19 05:05:14,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:14,987 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, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:14,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:05:14,988 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:14,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:14,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1244866615, now seen corresponding path program 1 times [2020-08-19 05:05:14,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:14,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612898866] [2020-08-19 05:05:14,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,323 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:15,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:15,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:15,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-08-19 05:05:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-19 05:05:15,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:15,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:15,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:05:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-19 05:05:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:15,572 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 05:05:15,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612898866] [2020-08-19 05:05:15,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:15,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:05:15,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913660271] [2020-08-19 05:05:15,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:05:15,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:15,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:05:15,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:05:15,581 INFO L87 Difference]: Start difference. First operand 966 states and 1163 transitions. Second operand 12 states. [2020-08-19 05:05:16,128 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 05:05:16,970 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 05:05:17,235 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:17,491 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:17,713 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:17,949 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:18,249 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:18,979 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:19,296 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:19,563 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:21,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:05:21,635 INFO L93 Difference]: Finished difference Result 2430 states and 3107 transitions. [2020-08-19 05:05:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-08-19 05:05:21,636 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 136 [2020-08-19 05:05:21,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:05:21,644 INFO L225 Difference]: With dead ends: 2430 [2020-08-19 05:05:21,644 INFO L226 Difference]: Without dead ends: 1643 [2020-08-19 05:05:21,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 50 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=270, Invalid=660, Unknown=0, NotChecked=0, Total=930 [2020-08-19 05:05:21,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1643 states. [2020-08-19 05:05:21,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1643 to 1461. [2020-08-19 05:05:21,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2020-08-19 05:05:21,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1788 transitions. [2020-08-19 05:05:21,884 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1788 transitions. Word has length 136 [2020-08-19 05:05:21,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:05:21,885 INFO L479 AbstractCegarLoop]: Abstraction has 1461 states and 1788 transitions. [2020-08-19 05:05:21,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:05:21,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1788 transitions. [2020-08-19 05:05:21,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-08-19 05:05:21,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:05:21,891 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:05:21,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:05:21,892 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:05:21,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:05:21,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1705425798, now seen corresponding path program 2 times [2020-08-19 05:05:21,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:05:21,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [94222681] [2020-08-19 05:05:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:05:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,265 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 05:05:22,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:05:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:22,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 05:05:22,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 05:05:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 05:05:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 05:05:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-19 05:05:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 05:05:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:05:22,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-19 05:05:22,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 05:05:22,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 05:05:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:05:22,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-19 05:05:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-08-19 05:05:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 05:05:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 05:05:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 05:05:22,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-08-19 05:05:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-08-19 05:05:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:05:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 37 proven. 22 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-08-19 05:05:22,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [94222681] [2020-08-19 05:05:22,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:05:22,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:05:22,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336793300] [2020-08-19 05:05:22,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:05:22,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:05:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:05:22,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:05:22,676 INFO L87 Difference]: Start difference. First operand 1461 states and 1788 transitions. Second operand 14 states. [2020-08-19 05:05:23,355 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:23,942 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 05:05:24,476 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 05:05:24,752 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 05:05:25,011 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190