/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 11:55:20,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 11:55:20,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 11:55:20,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 11:55:20,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 11:55:20,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 11:55:20,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 11:55:20,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 11:55:20,090 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 11:55:20,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 11:55:20,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 11:55:20,095 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 11:55:20,095 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 11:55:20,097 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 11:55:20,099 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 11:55:20,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 11:55:20,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 11:55:20,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 11:55:20,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 11:55:20,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 11:55:20,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 11:55:20,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 11:55:20,116 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 11:55:20,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 11:55:20,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 11:55:20,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 11:55:20,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 11:55:20,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 11:55:20,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 11:55:20,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 11:55:20,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 11:55:20,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 11:55:20,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 11:55:20,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 11:55:20,136 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 11:55:20,136 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 11:55:20,137 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 11:55:20,137 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 11:55:20,137 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 11:55:20,138 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 11:55:20,139 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 11:55:20,139 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 11:55:20,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 11:55:20,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 11:55:20,181 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 11:55:20,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 11:55:20,182 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 11:55:20,182 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 11:55:20,182 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 11:55:20,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 11:55:20,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 11:55:20,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 11:55:20,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 11:55:20,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 11:55:20,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 11:55:20,185 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 11:55:20,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 11:55:20,185 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 11:55:20,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 11:55:20,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 11:55:20,186 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 11:55:20,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 11:55:20,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 11:55:20,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 11:55:20,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 11:55:20,187 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 11:55:20,188 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 11:55:20,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 11:55:20,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 11:55:20,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 11:55:20,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 11:55:20,529 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 11:55:20,529 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 11:55:20,588 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39141c997/1a495aa6ac834ae1a28cef0f88da08fc/FLAGeece2f3f0 [2020-08-18 11:55:21,141 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 11:55:21,141 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec1_product62.cil.c [2020-08-18 11:55:21,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39141c997/1a495aa6ac834ae1a28cef0f88da08fc/FLAGeece2f3f0 [2020-08-18 11:55:21,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39141c997/1a495aa6ac834ae1a28cef0f88da08fc [2020-08-18 11:55:21,484 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 11:55:21,486 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 11:55:21,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 11:55:21,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 11:55:21,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 11:55:21,491 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:55:21" (1/1) ... [2020-08-18 11:55:21,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d5ae353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:21, skipping insertion in model container [2020-08-18 11:55:21,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:55:21" (1/1) ... [2020-08-18 11:55:21,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 11:55:21,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 11:55:21,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:55:21,987 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 11:55:22,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 11:55:22,119 INFO L208 MainTranslator]: Completed translation [2020-08-18 11:55:22,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22 WrapperNode [2020-08-18 11:55:22,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 11:55:22,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 11:55:22,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 11:55:22,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 11:55:22,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (1/1) ... [2020-08-18 11:55:22,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 11:55:22,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 11:55:22,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 11:55:22,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 11:55:22,211 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (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 11:55:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 11:55:22,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:55:22,275 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 11:55:22,276 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 11:55:22,277 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 11:55:22,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 11:55:22,279 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 11:55:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 11:55:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 11:55:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 11:55:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:55:22,281 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 11:55:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 11:55:22,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 11:55:22,282 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 11:55:22,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 11:55:22,284 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 11:55:22,285 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 11:55:22,286 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 11:55:22,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 11:55:22,288 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 11:55:22,289 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 11:55:22,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 11:55:23,238 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 11:55:23,238 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 11:55:23,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:55:23 BoogieIcfgContainer [2020-08-18 11:55:23,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 11:55:23,249 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 11:55:23,249 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 11:55:23,252 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 11:55:23,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:55:21" (1/3) ... [2020-08-18 11:55:23,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434a53a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:55:23, skipping insertion in model container [2020-08-18 11:55:23,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:55:22" (2/3) ... [2020-08-18 11:55:23,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434a53a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:55:23, skipping insertion in model container [2020-08-18 11:55:23,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:55:23" (3/3) ... [2020-08-18 11:55:23,257 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product62.cil.c [2020-08-18 11:55:23,268 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 11:55:23,277 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 11:55:23,291 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 11:55:23,321 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 11:55:23,321 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 11:55:23,322 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 11:55:23,323 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 11:55:23,323 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 11:55:23,323 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 11:55:23,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 11:55:23,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 11:55:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2020-08-18 11:55:23,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-18 11:55:23,368 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:23,369 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 11:55:23,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:23,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:23,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1419538001, now seen corresponding path program 1 times [2020-08-18 11:55:23,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:23,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616705776] [2020-08-18 11:55:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,027 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:24,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 11:55:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:55:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:24,157 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 11:55:24,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616705776] [2020-08-18 11:55:24,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:24,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 11:55:24,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401366902] [2020-08-18 11:55:24,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 11:55:24,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:24,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 11:55:24,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 11:55:24,183 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 3 states. [2020-08-18 11:55:25,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:25,452 INFO L93 Difference]: Finished difference Result 354 states and 461 transitions. [2020-08-18 11:55:25,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 11:55:25,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-18 11:55:25,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:25,469 INFO L225 Difference]: With dead ends: 354 [2020-08-18 11:55:25,469 INFO L226 Difference]: Without dead ends: 191 [2020-08-18 11:55:25,474 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 11:55:25,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-08-18 11:55:25,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 154. [2020-08-18 11:55:25,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-08-18 11:55:25,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2020-08-18 11:55:25,570 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 46 [2020-08-18 11:55:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:25,571 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2020-08-18 11:55:25,571 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 11:55:25,571 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2020-08-18 11:55:25,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-18 11:55:25,574 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:25,574 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 11:55:25,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 11:55:25,575 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:25,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:25,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1353902391, now seen corresponding path program 1 times [2020-08-18 11:55:25,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:25,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529314371] [2020-08-18 11:55:25,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,882 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:25,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:25,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 11:55:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 11:55:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:25,923 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 11:55:25,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529314371] [2020-08-18 11:55:25,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:25,924 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 11:55:25,924 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080361309] [2020-08-18 11:55:25,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 11:55:25,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:25,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 11:55:25,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 11:55:25,927 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand 4 states. [2020-08-18 11:55:26,362 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:27,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:27,342 INFO L93 Difference]: Finished difference Result 283 states and 348 transitions. [2020-08-18 11:55:27,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 11:55:27,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-18 11:55:27,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:27,347 INFO L225 Difference]: With dead ends: 283 [2020-08-18 11:55:27,347 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 11:55:27,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 11:55:27,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 11:55:27,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 11:55:27,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 11:55:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 171 transitions. [2020-08-18 11:55:27,423 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 171 transitions. Word has length 47 [2020-08-18 11:55:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:27,424 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 171 transitions. [2020-08-18 11:55:27,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 11:55:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 171 transitions. [2020-08-18 11:55:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 11:55:27,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:27,435 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 11:55:27,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 11:55:27,436 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:27,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:27,436 INFO L82 PathProgramCache]: Analyzing trace with hash -480372053, now seen corresponding path program 1 times [2020-08-18 11:55:27,436 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:27,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545474171] [2020-08-18 11:55:27,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,759 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:27,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:27,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:27,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 11:55:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:55:27,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:27,836 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 11:55:27,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545474171] [2020-08-18 11:55:27,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:27,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:55:27,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828972045] [2020-08-18 11:55:27,838 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:55:27,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:27,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:55:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:55:27,839 INFO L87 Difference]: Start difference. First operand 145 states and 171 transitions. Second operand 8 states. [2020-08-18 11:55:28,216 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:28,507 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:28,747 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:28,982 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:30,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:30,325 INFO L93 Difference]: Finished difference Result 296 states and 366 transitions. [2020-08-18 11:55:30,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 11:55:30,327 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-18 11:55:30,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:30,331 INFO L225 Difference]: With dead ends: 296 [2020-08-18 11:55:30,331 INFO L226 Difference]: Without dead ends: 175 [2020-08-18 11:55:30,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-08-18 11:55:30,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-08-18 11:55:30,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 145. [2020-08-18 11:55:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-08-18 11:55:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 170 transitions. [2020-08-18 11:55:30,372 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 170 transitions. Word has length 52 [2020-08-18 11:55:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:30,373 INFO L479 AbstractCegarLoop]: Abstraction has 145 states and 170 transitions. [2020-08-18 11:55:30,373 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:55:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 170 transitions. [2020-08-18 11:55:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 11:55:30,375 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:30,375 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] [2020-08-18 11:55:30,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 11:55:30,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1922469070, now seen corresponding path program 1 times [2020-08-18 11:55:30,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:30,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310281337] [2020-08-18 11:55:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,627 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:30,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:30,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:55:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:30,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:30,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 11:55:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-08-18 11:55:30,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:30,745 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 11:55:30,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310281337] [2020-08-18 11:55:30,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:30,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 11:55:30,746 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770948920] [2020-08-18 11:55:30,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 11:55:30,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 11:55:30,747 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 11:55:30,747 INFO L87 Difference]: Start difference. First operand 145 states and 170 transitions. Second operand 6 states. [2020-08-18 11:55:31,021 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:32,152 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:32,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:32,986 INFO L93 Difference]: Finished difference Result 404 states and 500 transitions. [2020-08-18 11:55:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:55:32,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-08-18 11:55:32,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:32,990 INFO L225 Difference]: With dead ends: 404 [2020-08-18 11:55:32,991 INFO L226 Difference]: Without dead ends: 283 [2020-08-18 11:55:32,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 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 11:55:32,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-08-18 11:55:33,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 240. [2020-08-18 11:55:33,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-08-18 11:55:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 272 transitions. [2020-08-18 11:55:33,042 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 272 transitions. Word has length 70 [2020-08-18 11:55:33,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:33,042 INFO L479 AbstractCegarLoop]: Abstraction has 240 states and 272 transitions. [2020-08-18 11:55:33,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 11:55:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 272 transitions. [2020-08-18 11:55:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-08-18 11:55:33,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:33,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 11:55:33,044 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:33,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 371744810, now seen corresponding path program 1 times [2020-08-18 11:55:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:33,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924147044] [2020-08-18 11:55:33,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,330 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:33,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:33,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:33,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 11:55:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:33,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:33,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:33,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-08-18 11:55:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-08-18 11:55:33,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:33,425 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 11:55:33,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924147044] [2020-08-18 11:55:33,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:33,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 11:55:33,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357117392] [2020-08-18 11:55:33,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 11:55:33,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:33,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 11:55:33,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 11:55:33,428 INFO L87 Difference]: Start difference. First operand 240 states and 272 transitions. Second operand 8 states. [2020-08-18 11:55:33,819 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:34,759 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:35,072 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:35,648 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:35,865 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:36,125 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:37,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:37,264 INFO L93 Difference]: Finished difference Result 718 states and 872 transitions. [2020-08-18 11:55:37,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:37,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-08-18 11:55:37,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:37,272 INFO L225 Difference]: With dead ends: 718 [2020-08-18 11:55:37,272 INFO L226 Difference]: Without dead ends: 502 [2020-08-18 11:55:37,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:37,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-18 11:55:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 435. [2020-08-18 11:55:37,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 11:55:37,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 494 transitions. [2020-08-18 11:55:37,362 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 494 transitions. Word has length 84 [2020-08-18 11:55:37,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:37,362 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 494 transitions. [2020-08-18 11:55:37,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 11:55:37,363 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 494 transitions. [2020-08-18 11:55:37,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 11:55:37,364 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:37,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:37,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 11:55:37,365 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:37,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:37,365 INFO L82 PathProgramCache]: Analyzing trace with hash 861472934, now seen corresponding path program 1 times [2020-08-18 11:55:37,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:37,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243565119] [2020-08-18 11:55:37,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,628 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:37,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-18 11:55:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-08-18 11:55:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:37,749 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 11:55:37,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243565119] [2020-08-18 11:55:37,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:37,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:37,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405635051] [2020-08-18 11:55:37,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:37,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:37,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:37,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:37,752 INFO L87 Difference]: Start difference. First operand 435 states and 494 transitions. Second operand 9 states. [2020-08-18 11:55:38,123 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:39,278 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:39,543 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:40,582 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:40,828 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:41,043 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:41,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:41,364 INFO L93 Difference]: Finished difference Result 544 states and 674 transitions. [2020-08-18 11:55:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 11:55:41,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 11:55:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:41,369 INFO L225 Difference]: With dead ends: 544 [2020-08-18 11:55:41,369 INFO L226 Difference]: Without dead ends: 541 [2020-08-18 11:55:41,370 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 11:55:41,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2020-08-18 11:55:41,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 435. [2020-08-18 11:55:41,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 11:55:41,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 493 transitions. [2020-08-18 11:55:41,450 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 493 transitions. Word has length 88 [2020-08-18 11:55:41,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:41,450 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 493 transitions. [2020-08-18 11:55:41,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 493 transitions. [2020-08-18 11:55:41,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 11:55:41,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:41,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:41,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 11:55:41,453 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:41,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:41,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1149093276, now seen corresponding path program 1 times [2020-08-18 11:55:41,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:41,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981548851] [2020-08-18 11:55:41,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,704 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:41,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:41,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:41,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:41,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:41,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:41,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:41,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 11:55:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 11:55:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:41,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981548851] [2020-08-18 11:55:41,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:41,859 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 11:55:41,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102732273] [2020-08-18 11:55:41,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 11:55:41,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 11:55:41,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 11:55:41,861 INFO L87 Difference]: Start difference. First operand 435 states and 493 transitions. Second operand 9 states. [2020-08-18 11:55:42,783 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:55:43,023 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 11:55:43,252 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:43,483 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:44,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:44,671 INFO L93 Difference]: Finished difference Result 960 states and 1180 transitions. [2020-08-18 11:55:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 11:55:44,677 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-08-18 11:55:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:44,681 INFO L225 Difference]: With dead ends: 960 [2020-08-18 11:55:44,681 INFO L226 Difference]: Without dead ends: 549 [2020-08-18 11:55:44,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 11:55:44,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2020-08-18 11:55:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 445. [2020-08-18 11:55:44,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 445 states. [2020-08-18 11:55:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 503 transitions. [2020-08-18 11:55:44,765 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 503 transitions. Word has length 104 [2020-08-18 11:55:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:44,765 INFO L479 AbstractCegarLoop]: Abstraction has 445 states and 503 transitions. [2020-08-18 11:55:44,765 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 11:55:44,765 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 503 transitions. [2020-08-18 11:55:44,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 11:55:44,767 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:44,767 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:44,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 11:55:44,768 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:44,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:44,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1502181658, now seen corresponding path program 1 times [2020-08-18 11:55:44,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:44,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970278109] [2020-08-18 11:55:44,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:44,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,049 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:45,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:45,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:45,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:45,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:45,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:45,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:45,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 11:55:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 11:55:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:45,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:45,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970278109] [2020-08-18 11:55:45,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:45,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 11:55:45,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59073653] [2020-08-18 11:55:45,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 11:55:45,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:45,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 11:55:45,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 11:55:45,242 INFO L87 Difference]: Start difference. First operand 445 states and 503 transitions. Second operand 11 states. [2020-08-18 11:55:45,684 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:45,909 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:46,124 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:46,722 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:46,960 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:47,195 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 11:55:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:48,501 INFO L93 Difference]: Finished difference Result 980 states and 1202 transitions. [2020-08-18 11:55:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 11:55:48,502 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 104 [2020-08-18 11:55:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:48,507 INFO L225 Difference]: With dead ends: 980 [2020-08-18 11:55:48,507 INFO L226 Difference]: Without dead ends: 559 [2020-08-18 11:55:48,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:55:48,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2020-08-18 11:55:48,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 453. [2020-08-18 11:55:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-08-18 11:55:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 511 transitions. [2020-08-18 11:55:48,617 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 511 transitions. Word has length 104 [2020-08-18 11:55:48,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:48,618 INFO L479 AbstractCegarLoop]: Abstraction has 453 states and 511 transitions. [2020-08-18 11:55:48,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 11:55:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 511 transitions. [2020-08-18 11:55:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-08-18 11:55:48,623 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:48,623 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:48,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 11:55:48,623 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:48,624 INFO L82 PathProgramCache]: Analyzing trace with hash -368991065, now seen corresponding path program 1 times [2020-08-18 11:55:48,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665758789] [2020-08-18 11:55:48,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:48,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,004 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:49,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-18 11:55:49,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 11:55:49,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-08-18 11:55:49,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-08-18 11:55:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 11:55:49,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665758789] [2020-08-18 11:55:49,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 11:55:49,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 11:55:49,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026641522] [2020-08-18 11:55:49,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 11:55:49,199 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:49,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 11:55:49,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 11:55:49,201 INFO L87 Difference]: Start difference. First operand 453 states and 511 transitions. Second operand 7 states. [2020-08-18 11:55:49,514 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:49,975 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:52,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:55:52,264 INFO L93 Difference]: Finished difference Result 1342 states and 1702 transitions. [2020-08-18 11:55:52,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 11:55:52,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-08-18 11:55:52,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:55:52,271 INFO L225 Difference]: With dead ends: 1342 [2020-08-18 11:55:52,271 INFO L226 Difference]: Without dead ends: 913 [2020-08-18 11:55:52,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 11:55:52,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-18 11:55:52,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 793. [2020-08-18 11:55:52,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 11:55:52,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 929 transitions. [2020-08-18 11:55:52,431 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 929 transitions. Word has length 104 [2020-08-18 11:55:52,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:55:52,432 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 929 transitions. [2020-08-18 11:55:52,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 11:55:52,433 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 929 transitions. [2020-08-18 11:55:52,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 11:55:52,435 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:55:52,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:55:52,436 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 11:55:52,436 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:55:52,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:55:52,436 INFO L82 PathProgramCache]: Analyzing trace with hash 38573473, now seen corresponding path program 1 times [2020-08-18 11:55:52,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:55:52,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [995393666] [2020-08-18 11:55:52,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:55:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,700 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:55:52,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:55:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:55:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:55:52,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:55:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:55:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 11:55:52,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 11:55:52,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:55:52,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:55:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:52,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:52,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:53,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:55:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:55:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:53,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-08-18 11:55:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:53,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-08-18 11:55:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:55:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 11:55:53,188 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [995393666] [2020-08-18 11:55:53,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:55:53,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-18 11:55:53,189 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317346081] [2020-08-18 11:55:53,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-18 11:55:53,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:55:53,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-18 11:55:53,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-08-18 11:55:53,191 INFO L87 Difference]: Start difference. First operand 793 states and 929 transitions. Second operand 17 states. [2020-08-18 11:55:54,076 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:54,373 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:54,610 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:54,846 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:55,454 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:55:56,532 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:56,847 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:57,118 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:57,392 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:57,703 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:57,982 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:55:58,507 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 11:55:59,026 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 188 [2020-08-18 11:56:01,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:01,496 INFO L93 Difference]: Finished difference Result 1649 states and 2014 transitions. [2020-08-18 11:56:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-18 11:56:01,497 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 108 [2020-08-18 11:56:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:01,502 INFO L225 Difference]: With dead ends: 1649 [2020-08-18 11:56:01,502 INFO L226 Difference]: Without dead ends: 880 [2020-08-18 11:56:01,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 44 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=342, Invalid=1380, Unknown=0, NotChecked=0, Total=1722 [2020-08-18 11:56:01,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2020-08-18 11:56:01,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 763. [2020-08-18 11:56:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 11:56:01,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 880 transitions. [2020-08-18 11:56:01,648 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 880 transitions. Word has length 108 [2020-08-18 11:56:01,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:01,648 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 880 transitions. [2020-08-18 11:56:01,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-18 11:56:01,649 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 880 transitions. [2020-08-18 11:56:01,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 11:56:01,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 11:56:01,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 11:56:01,655 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 11:56:01,655 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 11:56:01,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 11:56:01,656 INFO L82 PathProgramCache]: Analyzing trace with hash 118260142, now seen corresponding path program 1 times [2020-08-18 11:56:01,656 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 11:56:01,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291354913] [2020-08-18 11:56:01,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 11:56:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,003 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-18 11:56:02,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 11:56:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 11:56:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 11:56:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 11:56:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 11:56:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 11:56:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 11:56:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 11:56:02,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 11:56:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-08-18 11:56:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-18 11:56:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-08-18 11:56:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 11:56:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 11:56:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 11:56:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 11:56:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-08-18 11:56:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-18 11:56:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 11:56:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 11:56:02,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291354913] [2020-08-18 11:56:02,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 11:56:02,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 11:56:02,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880409717] [2020-08-18 11:56:02,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 11:56:02,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 11:56:02,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 11:56:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 11:56:02,321 INFO L87 Difference]: Start difference. First operand 763 states and 880 transitions. Second operand 18 states. [2020-08-18 11:56:03,084 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:56:03,448 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:03,689 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:03,919 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 11:56:04,558 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-18 11:56:05,608 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:05,932 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:06,186 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:06,440 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:06,753 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:07,008 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:08,185 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:08,433 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:08,689 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:08,919 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-18 11:56:10,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 11:56:10,194 INFO L93 Difference]: Finished difference Result 1402 states and 1720 transitions. [2020-08-18 11:56:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-18 11:56:10,200 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 178 [2020-08-18 11:56:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 11:56:10,201 INFO L225 Difference]: With dead ends: 1402 [2020-08-18 11:56:10,201 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 11:56:10,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 495 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=387, Invalid=1775, Unknown=0, NotChecked=0, Total=2162 [2020-08-18 11:56:10,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 11:56:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 11:56:10,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 11:56:10,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 11:56:10,207 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2020-08-18 11:56:10,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 11:56:10,208 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 11:56:10,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 11:56:10,208 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 11:56:10,208 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 11:56:10,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 11:56:10,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 11:56:11,028 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 11:56:11,153 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 212 DAG size of output: 200 [2020-08-18 11:56:11,312 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 11:56:11,515 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 201 [2020-08-18 11:56:13,080 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 11:56:13,729 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 11:56:14,249 WARN L193 SmtUtils]: Spent 444.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-18 11:56:16,382 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 297 DAG size of output: 257 [2020-08-18 11:56:17,177 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 299 DAG size of output: 259 [2020-08-18 11:56:17,678 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 16 [2020-08-18 11:56:17,836 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 11:56:18,729 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 23 [2020-08-18 11:56:18,927 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22 [2020-08-18 11:56:19,088 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 24 [2020-08-18 11:56:19,243 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 11:56:19,456 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 22 [2020-08-18 11:56:19,614 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 1 [2020-08-18 11:56:19,788 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-18 11:56:19,982 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 148 DAG size of output: 19 [2020-08-18 11:56:20,157 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 26 [2020-08-18 11:56:20,642 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 22