/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=NARROWEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:47:52,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:47:52,192 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:47:52,216 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:47:52,216 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:47:52,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:47:52,219 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:47:52,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:47:52,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:47:52,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:47:52,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:47:52,225 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:47:52,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:47:52,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:47:52,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:47:52,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:47:52,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:47:52,230 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:47:52,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:47:52,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:47:52,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:47:52,236 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:47:52,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:47:52,238 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:47:52,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:47:52,241 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:47:52,241 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:47:52,242 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:47:52,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:47:52,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:47:52,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:47:52,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:47:52,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:47:52,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:47:52,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:47:52,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:47:52,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:47:52,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:47:52,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:47:52,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:47:52,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:47:52,251 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 [2020-08-18 21:47:52,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:47:52,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:47:52,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:47:52,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:47:52,293 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:47:52,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:47:52,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:47:52,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:47:52,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:47:52,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:47:52,295 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:47:52,295 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:47:52,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:47:52,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:47:52,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:47:52,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:47:52,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:47:52,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:47:52,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:47:52,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:47:52,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:47:52,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:47:52,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:47:52,302 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:47:52,302 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=NARROWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=NARROWEST; [2020-08-18 21:47:52,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:47:52,647 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:47:52,651 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:47:52,652 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:47:52,653 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:47:52,653 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-18 21:47:52,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab09b301/150d4a6f27004c0faaf2e9ae66735e98/FLAGb662df6e1 [2020-08-18 21:47:53,278 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:47:53,279 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product58.cil.c [2020-08-18 21:47:53,295 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab09b301/150d4a6f27004c0faaf2e9ae66735e98/FLAGb662df6e1 [2020-08-18 21:47:53,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8ab09b301/150d4a6f27004c0faaf2e9ae66735e98 [2020-08-18 21:47:53,738 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:47:53,739 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:47:53,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:53,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:47:53,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:47:53,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:53" (1/1) ... [2020-08-18 21:47:53,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e42023b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:53, skipping insertion in model container [2020-08-18 21:47:53,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:47:53" (1/1) ... [2020-08-18 21:47:53,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:47:53,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:47:54,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:54,244 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:47:54,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:47:54,355 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:47:54,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54 WrapperNode [2020-08-18 21:47:54,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:47:54,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:47:54,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:47:54,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:47:54,367 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,386 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,387 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (1/1) ... [2020-08-18 21:47:54,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:47:54,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:47:54,448 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:47:54,448 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:47:54,449 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (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 [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:54,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:47:54,510 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:47:54,511 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:47:54,512 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:47:54,513 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:47:54,514 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:47:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:47:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:47:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 21:47:54,515 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:47:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:47:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:47:54,515 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:47:54,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:47:54,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:47:54,518 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:47:54,519 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:47:54,520 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:47:54,521 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 21:47:54,522 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 21:47:54,523 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:47:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:47:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:47:54,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:47:55,568 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:47:55,568 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:47:55,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:55 BoogieIcfgContainer [2020-08-18 21:47:55,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:47:55,575 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:47:55,575 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:47:55,578 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:47:55,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:47:53" (1/3) ... [2020-08-18 21:47:55,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaab999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:55, skipping insertion in model container [2020-08-18 21:47:55,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:47:54" (2/3) ... [2020-08-18 21:47:55,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaab999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:47:55, skipping insertion in model container [2020-08-18 21:47:55,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:47:55" (3/3) ... [2020-08-18 21:47:55,582 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product58.cil.c [2020-08-18 21:47:55,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:47:55,602 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:47:55,617 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:47:55,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:47:55,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:47:55,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:47:55,644 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:47:55,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:47:55,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:47:55,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:47:55,645 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:47:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states. [2020-08-18 21:47:55,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 21:47:55,677 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:55,679 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] [2020-08-18 21:47:55,679 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:55,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:55,686 INFO L82 PathProgramCache]: Analyzing trace with hash -298144076, now seen corresponding path program 1 times [2020-08-18 21:47:55,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:55,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529023490] [2020-08-18 21:47:55,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,413 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:56,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:56,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:56,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:47:56,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:47:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:56,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:56,531 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529023490] [2020-08-18 21:47:56,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:56,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:47:56,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90295708] [2020-08-18 21:47:56,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:47:56,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:56,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:47:56,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:56,578 INFO L87 Difference]: Start difference. First operand 190 states. Second operand 3 states. [2020-08-18 21:47:57,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:57,825 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-08-18 21:47:57,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:47:57,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 21:47:57,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:57,850 INFO L225 Difference]: With dead ends: 338 [2020-08-18 21:47:57,850 INFO L226 Difference]: Without dead ends: 182 [2020-08-18 21:47:57,860 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:47:57,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-18 21:47:58,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 147. [2020-08-18 21:47:58,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-08-18 21:47:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 170 transitions. [2020-08-18 21:47:58,011 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 170 transitions. Word has length 46 [2020-08-18 21:47:58,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:58,012 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 170 transitions. [2020-08-18 21:47:58,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:47:58,013 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 170 transitions. [2020-08-18 21:47:58,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 21:47:58,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:58,019 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] [2020-08-18 21:47:58,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:47:58,020 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:58,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash -491113124, now seen corresponding path program 1 times [2020-08-18 21:47:58,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:58,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606446751] [2020-08-18 21:47:58,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,410 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:47:58,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:47:58,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:47:58,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:47:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:47:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:47:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:47:58,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 21:47:58,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:47:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:47:58,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606446751] [2020-08-18 21:47:58,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:47:58,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:47:58,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202118383] [2020-08-18 21:47:58,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:47:58,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:47:58,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:47:58,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:47:58,456 INFO L87 Difference]: Start difference. First operand 147 states and 170 transitions. Second operand 4 states. [2020-08-18 21:47:58,895 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:47:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:47:59,863 INFO L93 Difference]: Finished difference Result 267 states and 319 transitions. [2020-08-18 21:47:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:47:59,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 21:47:59,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:47:59,868 INFO L225 Difference]: With dead ends: 267 [2020-08-18 21:47:59,868 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 21:47:59,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:47:59,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 21:47:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 21:47:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 21:47:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 158 transitions. [2020-08-18 21:47:59,908 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 158 transitions. Word has length 47 [2020-08-18 21:47:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:47:59,908 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 158 transitions. [2020-08-18 21:47:59,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:47:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 158 transitions. [2020-08-18 21:47:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 21:47:59,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:47:59,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:47:59,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:47:59,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:47:59,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:47:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1388977157, now seen corresponding path program 1 times [2020-08-18 21:47:59,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:47:59,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049294832] [2020-08-18 21:47:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:47:59,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,252 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:00,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:00,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:00,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 21:48:00,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:48:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:00,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:48:00,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049294832] [2020-08-18 21:48:00,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:48:00,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 21:48:00,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475775381] [2020-08-18 21:48:00,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 21:48:00,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:00,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 21:48:00,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 21:48:00,356 INFO L87 Difference]: Start difference. First operand 138 states and 158 transitions. Second operand 8 states. [2020-08-18 21:48:00,719 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:01,045 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:01,309 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:01,563 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:02,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:02,904 INFO L93 Difference]: Finished difference Result 280 states and 337 transitions. [2020-08-18 21:48:02,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:48:02,913 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 21:48:02,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:02,916 INFO L225 Difference]: With dead ends: 280 [2020-08-18 21:48:02,916 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 21:48:02,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:02,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 21:48:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 138. [2020-08-18 21:48:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-08-18 21:48:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2020-08-18 21:48:02,958 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 52 [2020-08-18 21:48:02,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:02,958 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2020-08-18 21:48:02,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 21:48:02,959 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2020-08-18 21:48:02,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 21:48:02,961 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:02,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:02,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:48:02,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:02,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:02,962 INFO L82 PathProgramCache]: Analyzing trace with hash 105794737, now seen corresponding path program 1 times [2020-08-18 21:48:02,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:02,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052832639] [2020-08-18 21:48:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,230 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:03,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:03,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:48:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:48:03,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-08-18 21:48:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:48:03,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052832639] [2020-08-18 21:48:03,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:48:03,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 21:48:03,331 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915132554] [2020-08-18 21:48:03,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 21:48:03,334 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:03,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 21:48:03,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 21:48:03,335 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand 6 states. [2020-08-18 21:48:03,648 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:04,911 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:05,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:05,593 INFO L93 Difference]: Finished difference Result 377 states and 459 transitions. [2020-08-18 21:48:05,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:48:05,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-08-18 21:48:05,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:05,597 INFO L225 Difference]: With dead ends: 377 [2020-08-18 21:48:05,597 INFO L226 Difference]: Without dead ends: 263 [2020-08-18 21:48:05,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:48:05,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-08-18 21:48:05,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 220. [2020-08-18 21:48:05,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-18 21:48:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 248 transitions. [2020-08-18 21:48:05,657 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 248 transitions. Word has length 65 [2020-08-18 21:48:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:05,658 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 248 transitions. [2020-08-18 21:48:05,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 21:48:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 248 transitions. [2020-08-18 21:48:05,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 21:48:05,661 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:05,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:05,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:48:05,661 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:05,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:05,662 INFO L82 PathProgramCache]: Analyzing trace with hash -830596407, now seen corresponding path program 1 times [2020-08-18 21:48:05,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:05,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1183908886] [2020-08-18 21:48:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,920 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:05,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:05,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:48:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:06,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:06,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:06,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 21:48:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 21:48:06,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:48:06,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1183908886] [2020-08-18 21:48:06,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:48:06,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:48:06,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975713864] [2020-08-18 21:48:06,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:48:06,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:06,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:48:06,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:48:06,092 INFO L87 Difference]: Start difference. First operand 220 states and 248 transitions. Second operand 10 states. [2020-08-18 21:48:06,550 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:06,798 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:07,033 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:07,641 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:07,942 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:08,187 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:09,232 INFO L93 Difference]: Finished difference Result 460 states and 553 transitions. [2020-08-18 21:48:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:48:09,233 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 79 [2020-08-18 21:48:09,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:09,237 INFO L225 Difference]: With dead ends: 460 [2020-08-18 21:48:09,237 INFO L226 Difference]: Without dead ends: 264 [2020-08-18 21:48:09,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:48:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-08-18 21:48:09,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 224. [2020-08-18 21:48:09,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-08-18 21:48:09,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 252 transitions. [2020-08-18 21:48:09,290 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 252 transitions. Word has length 79 [2020-08-18 21:48:09,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:09,290 INFO L479 AbstractCegarLoop]: Abstraction has 224 states and 252 transitions. [2020-08-18 21:48:09,291 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:48:09,291 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 252 transitions. [2020-08-18 21:48:09,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-18 21:48:09,292 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:09,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:09,293 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:48:09,293 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:09,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:09,293 INFO L82 PathProgramCache]: Analyzing trace with hash 2078167495, now seen corresponding path program 1 times [2020-08-18 21:48:09,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:09,294 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2002934639] [2020-08-18 21:48:09,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:09,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,614 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 21:48:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:09,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 21:48:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-18 21:48:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:48:09,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2002934639] [2020-08-18 21:48:09,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:48:09,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:48:09,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252925804] [2020-08-18 21:48:09,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:48:09,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:48:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:09,768 INFO L87 Difference]: Start difference. First operand 224 states and 252 transitions. Second operand 12 states. [2020-08-18 21:48:10,113 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:10,417 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:10,673 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:10,931 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:11,473 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:12,345 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:12,648 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:12,924 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:13,204 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:13,512 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:13,771 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:15,157 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:15,542 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:16,207 INFO L93 Difference]: Finished difference Result 789 states and 997 transitions. [2020-08-18 21:48:16,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 21:48:16,207 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-08-18 21:48:16,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:16,213 INFO L225 Difference]: With dead ends: 789 [2020-08-18 21:48:16,213 INFO L226 Difference]: Without dead ends: 589 [2020-08-18 21:48:16,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-18 21:48:16,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2020-08-18 21:48:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 527. [2020-08-18 21:48:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-08-18 21:48:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 609 transitions. [2020-08-18 21:48:16,314 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 609 transitions. Word has length 79 [2020-08-18 21:48:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:16,314 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 609 transitions. [2020-08-18 21:48:16,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:16,314 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 609 transitions. [2020-08-18 21:48:16,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-18 21:48:16,318 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:16,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:16,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:48:16,319 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:16,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:16,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1201141545, now seen corresponding path program 1 times [2020-08-18 21:48:16,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:16,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382556446] [2020-08-18 21:48:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,578 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:16,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:16,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:16,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 21:48:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 21:48:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:16,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-18 21:48:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-08-18 21:48:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:16,915 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-08-18 21:48:16,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382556446] [2020-08-18 21:48:16,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:16,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:16,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314817033] [2020-08-18 21:48:16,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:16,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:16,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:16,921 INFO L87 Difference]: Start difference. First operand 527 states and 609 transitions. Second operand 13 states. [2020-08-18 21:48:17,340 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:17,953 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:18,515 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:18,778 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:48:19,036 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:19,273 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:19,524 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:48:19,803 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:48:20,097 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:20,343 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:22,016 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:22,262 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:22,488 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:22,711 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:23,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:23,161 INFO L93 Difference]: Finished difference Result 937 states and 1177 transitions. [2020-08-18 21:48:23,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 21:48:23,162 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-18 21:48:23,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:23,166 INFO L225 Difference]: With dead ends: 937 [2020-08-18 21:48:23,166 INFO L226 Difference]: Without dead ends: 434 [2020-08-18 21:48:23,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=205, Invalid=851, Unknown=0, NotChecked=0, Total=1056 [2020-08-18 21:48:23,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-08-18 21:48:23,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 380. [2020-08-18 21:48:23,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-08-18 21:48:23,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 443 transitions. [2020-08-18 21:48:23,244 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 443 transitions. Word has length 154 [2020-08-18 21:48:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:23,244 INFO L479 AbstractCegarLoop]: Abstraction has 380 states and 443 transitions. [2020-08-18 21:48:23,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:48:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 443 transitions. [2020-08-18 21:48:23,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 21:48:23,247 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:23,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:23,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:48:23,248 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:23,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:23,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1319690960, now seen corresponding path program 1 times [2020-08-18 21:48:23,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:23,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73851637] [2020-08-18 21:48:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,515 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:23,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:23,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:23,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:23,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:23,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:23,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:23,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 21:48:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 21:48:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:23,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:23,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 21:48:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 21:48:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 21:48:23,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73851637] [2020-08-18 21:48:23,792 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:23,792 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:48:23,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765787286] [2020-08-18 21:48:23,793 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:48:23,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:23,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:48:23,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:48:23,795 INFO L87 Difference]: Start difference. First operand 380 states and 443 transitions. Second operand 10 states. [2020-08-18 21:48:25,365 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:25,589 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:25,819 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:26,050 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:26,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:26,464 INFO L93 Difference]: Finished difference Result 704 states and 848 transitions. [2020-08-18 21:48:26,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 21:48:26,467 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-18 21:48:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:26,472 INFO L225 Difference]: With dead ends: 704 [2020-08-18 21:48:26,472 INFO L226 Difference]: Without dead ends: 411 [2020-08-18 21:48:26,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:48:26,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2020-08-18 21:48:26,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 385. [2020-08-18 21:48:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 21:48:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 448 transitions. [2020-08-18 21:48:26,578 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 448 transitions. Word has length 149 [2020-08-18 21:48:26,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:26,580 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 448 transitions. [2020-08-18 21:48:26,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:48:26,580 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 448 transitions. [2020-08-18 21:48:26,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-08-18 21:48:26,583 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:26,584 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:26,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:48:26,584 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:26,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:26,585 INFO L82 PathProgramCache]: Analyzing trace with hash 810217870, now seen corresponding path program 1 times [2020-08-18 21:48:26,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:26,585 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374432562] [2020-08-18 21:48:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:26,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,871 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:26,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:26,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:26,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:26,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:26,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:27,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 21:48:27,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 21:48:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:27,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-08-18 21:48:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-18 21:48:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-08-18 21:48:27,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374432562] [2020-08-18 21:48:27,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:27,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:48:27,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433601305] [2020-08-18 21:48:27,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:48:27,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:27,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:48:27,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:48:27,091 INFO L87 Difference]: Start difference. First operand 385 states and 448 transitions. Second operand 10 states. [2020-08-18 21:48:27,599 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:29,194 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:29,460 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:29,703 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:29,952 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:30,237 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:30,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:30,720 INFO L93 Difference]: Finished difference Result 418 states and 500 transitions. [2020-08-18 21:48:30,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:48:30,721 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 149 [2020-08-18 21:48:30,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:30,726 INFO L225 Difference]: With dead ends: 418 [2020-08-18 21:48:30,726 INFO L226 Difference]: Without dead ends: 415 [2020-08-18 21:48:30,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:48:30,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-08-18 21:48:30,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 385. [2020-08-18 21:48:30,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 385 states. [2020-08-18 21:48:30,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 447 transitions. [2020-08-18 21:48:30,856 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 447 transitions. Word has length 149 [2020-08-18 21:48:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:30,857 INFO L479 AbstractCegarLoop]: Abstraction has 385 states and 447 transitions. [2020-08-18 21:48:30,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:48:30,857 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 447 transitions. [2020-08-18 21:48:30,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-08-18 21:48:30,861 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:30,861 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:30,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:48:30,862 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:30,863 INFO L82 PathProgramCache]: Analyzing trace with hash -488644751, now seen corresponding path program 1 times [2020-08-18 21:48:30,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:30,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446315852] [2020-08-18 21:48:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,163 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:31,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:31,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:31,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:31,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 21:48:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 21:48:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-08-18 21:48:31,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-08-18 21:48:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 21:48:31,347 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446315852] [2020-08-18 21:48:31,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:31,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-18 21:48:31,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567325062] [2020-08-18 21:48:31,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:48:31,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:31,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:48:31,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:48:31,350 INFO L87 Difference]: Start difference. First operand 385 states and 447 transitions. Second operand 12 states. [2020-08-18 21:48:31,714 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:32,290 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:33,142 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:33,437 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:33,689 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:33,957 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:34,230 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:34,475 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:35,738 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:36,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:36,530 INFO L93 Difference]: Finished difference Result 922 states and 1160 transitions. [2020-08-18 21:48:36,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-08-18 21:48:36,531 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-08-18 21:48:36,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:36,536 INFO L225 Difference]: With dead ends: 922 [2020-08-18 21:48:36,536 INFO L226 Difference]: Without dead ends: 624 [2020-08-18 21:48:36,538 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=259, Invalid=611, Unknown=0, NotChecked=0, Total=870 [2020-08-18 21:48:36,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2020-08-18 21:48:36,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 528. [2020-08-18 21:48:36,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-08-18 21:48:36,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 621 transitions. [2020-08-18 21:48:36,634 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 621 transitions. Word has length 153 [2020-08-18 21:48:36,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:36,635 INFO L479 AbstractCegarLoop]: Abstraction has 528 states and 621 transitions. [2020-08-18 21:48:36,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:48:36,635 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 621 transitions. [2020-08-18 21:48:36,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 21:48:36,638 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:36,639 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:36,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:48:36,639 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:36,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:36,640 INFO L82 PathProgramCache]: Analyzing trace with hash 700598337, now seen corresponding path program 2 times [2020-08-18 21:48:36,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:36,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749183860] [2020-08-18 21:48:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,919 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:36,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:36,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:36,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:36,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:37,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:48:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:37,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:48:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 21:48:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 21:48:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-18 21:48:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-18 21:48:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:37,295 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 49 proven. 25 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-08-18 21:48:37,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749183860] [2020-08-18 21:48:37,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:37,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:37,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405641025] [2020-08-18 21:48:37,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:37,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:37,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:37,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:37,298 INFO L87 Difference]: Start difference. First operand 528 states and 621 transitions. Second operand 13 states. [2020-08-18 21:48:38,285 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:38,531 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 21:48:40,179 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:48:40,433 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:40,669 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:41,134 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 186 [2020-08-18 21:48:42,711 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 189 [2020-08-18 21:48:42,967 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:48:43,252 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:43,501 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:48:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:44,492 INFO L93 Difference]: Finished difference Result 1442 states and 1789 transitions. [2020-08-18 21:48:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 21:48:44,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-18 21:48:44,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:44,500 INFO L225 Difference]: With dead ends: 1442 [2020-08-18 21:48:44,500 INFO L226 Difference]: Without dead ends: 999 [2020-08-18 21:48:44,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 80 SyntacticMatches, 6 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=299, Invalid=961, Unknown=0, NotChecked=0, Total=1260 [2020-08-18 21:48:44,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2020-08-18 21:48:44,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 850. [2020-08-18 21:48:44,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 850 states. [2020-08-18 21:48:44,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 986 transitions. [2020-08-18 21:48:44,732 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 986 transitions. Word has length 207 [2020-08-18 21:48:44,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:44,732 INFO L479 AbstractCegarLoop]: Abstraction has 850 states and 986 transitions. [2020-08-18 21:48:44,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:48:44,733 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 986 transitions. [2020-08-18 21:48:44,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-08-18 21:48:44,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:48:44,737 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:48:44,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:48:44,737 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:48:44,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:48:44,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1257976449, now seen corresponding path program 1 times [2020-08-18 21:48:44,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:48:44,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643990000] [2020-08-18 21:48:44,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:48:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,011 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 21:48:45,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:48:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:48:45,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:48:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 21:48:45,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:48:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:48:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:48:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 21:48:45,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:48:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:48:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:48:45,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-08-18 21:48:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-08-18 21:48:45,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:48:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:48:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:48:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2020-08-18 21:48:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-18 21:48:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:48:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 41 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-08-18 21:48:45,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643990000] [2020-08-18 21:48:45,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:48:45,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 21:48:45,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790179449] [2020-08-18 21:48:45,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-18 21:48:45,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:48:45,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-18 21:48:45,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-08-18 21:48:45,217 INFO L87 Difference]: Start difference. First operand 850 states and 986 transitions. Second operand 13 states. [2020-08-18 21:48:45,643 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:45,874 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:46,091 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:47,451 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:48:47,684 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:48:47,932 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:48,167 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 21:48:48,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:48:48,465 INFO L93 Difference]: Finished difference Result 1133 states and 1322 transitions. [2020-08-18 21:48:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:48:48,466 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 207 [2020-08-18 21:48:48,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:48:48,467 INFO L225 Difference]: With dead ends: 1133 [2020-08-18 21:48:48,467 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:48:48,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2020-08-18 21:48:48,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:48:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:48:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:48:48,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:48:48,474 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2020-08-18 21:48:48,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:48:48,474 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:48:48,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-18 21:48:48,474 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:48:48,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:48:48,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 21:48:48,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:48:48,638 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 21:48:48,974 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 192 [2020-08-18 21:48:50,348 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2020-08-18 21:48:51,255 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 271 DAG size of output: 246 [2020-08-18 21:48:51,626 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 245