/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_spec2_product61.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:53:59,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:53:59,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:53:59,204 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:53:59,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:53:59,217 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:53:59,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:53:59,221 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:53:59,223 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:53:59,227 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:53:59,228 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:53:59,230 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:53:59,230 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:53:59,233 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:53:59,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:53:59,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:53:59,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:53:59,240 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:53:59,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:53:59,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:53:59,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:53:59,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:53:59,255 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:53:59,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:53:59,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:53:59,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:53:59,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:53:59,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:53:59,263 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:53:59,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:53:59,264 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:53:59,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:53:59,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:53:59,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:53:59,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:53:59,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:53:59,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:53:59,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:53:59,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:53:59,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:53:59,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:53:59,271 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 16:53:59,314 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:53:59,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:53:59,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:53:59,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:53:59,316 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:53:59,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:53:59,317 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:53:59,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:53:59,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:53:59,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:53:59,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:53:59,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:53:59,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:53:59,320 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:53:59,320 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:53:59,320 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:53:59,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:53:59,321 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:53:59,321 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:53:59,321 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:53:59,321 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:53:59,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:53:59,322 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:53:59,322 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:53:59,322 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:53:59,322 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:53:59,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:53:59,323 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:53:59,323 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:53:59,323 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 16:53:59,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:53:59,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:53:59,633 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:53:59,635 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:53:59,635 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:53:59,636 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-18 16:53:59,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b83f71d4/dd0cc25a697b42f0835888c66c192ea3/FLAG53ccf9c2a [2020-08-18 16:54:00,243 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:54:00,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec2_product61.cil.c [2020-08-18 16:54:00,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b83f71d4/dd0cc25a697b42f0835888c66c192ea3/FLAG53ccf9c2a [2020-08-18 16:54:00,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b83f71d4/dd0cc25a697b42f0835888c66c192ea3 [2020-08-18 16:54:00,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:54:00,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:54:00,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:00,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:54:00,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:54:00,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:00" (1/1) ... [2020-08-18 16:54:00,600 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1865218a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:00, skipping insertion in model container [2020-08-18 16:54:00,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:54:00" (1/1) ... [2020-08-18 16:54:00,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:54:00,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:54:01,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:01,092 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:54:01,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:54:01,214 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:54:01,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01 WrapperNode [2020-08-18 16:54:01,215 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:54:01,216 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:54:01,216 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:54:01,216 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:54:01,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,226 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,245 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (1/1) ... [2020-08-18 16:54:01,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:54:01,333 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:54:01,333 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:54:01,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:54:01,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (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 16:54:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:54:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:54:01,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:54:01,424 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:54:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 16:54:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 16:54:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 16:54:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 16:54:01,425 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:54:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:01,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 16:54:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 16:54:01,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 16:54:01,428 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 16:54:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 16:54:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 16:54:01,429 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 16:54:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 16:54:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 16:54:01,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:54:01,431 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 16:54:01,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 16:54:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 16:54:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 16:54:01,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 16:54:01,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:54:01,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2020-08-18 16:54:01,436 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2020-08-18 16:54:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 16:54:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 16:54:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 16:54:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 16:54:01,437 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 16:54:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 16:54:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 16:54:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 16:54:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 16:54:01,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 16:54:01,439 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 16:54:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 16:54:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 16:54:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 16:54:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:54:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 16:54:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 16:54:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:54:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 16:54:01,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 16:54:01,443 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 16:54:01,444 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 16:54:01,445 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2020-08-18 16:54:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 16:54:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2020-08-18 16:54:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:54:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 16:54:01,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:54:02,498 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:54:02,499 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 16:54:02,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:02 BoogieIcfgContainer [2020-08-18 16:54:02,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:54:02,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:54:02,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:54:02,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:54:02,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:54:00" (1/3) ... [2020-08-18 16:54:02,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a606712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:02, skipping insertion in model container [2020-08-18 16:54:02,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:54:01" (2/3) ... [2020-08-18 16:54:02,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a606712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:54:02, skipping insertion in model container [2020-08-18 16:54:02,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:54:02" (3/3) ... [2020-08-18 16:54:02,514 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product61.cil.c [2020-08-18 16:54:02,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:54:02,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:54:02,542 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:54:02,566 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:54:02,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:54:02,566 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:54:02,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:54:02,568 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:54:02,568 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:54:02,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:54:02,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:54:02,603 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2020-08-18 16:54:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-18 16:54:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:02,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:54:02,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:02,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:02,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1299073538, now seen corresponding path program 1 times [2020-08-18 16:54:02,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:02,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195228949] [2020-08-18 16:54:02,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,289 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:03,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-08-18 16:54:03,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 16:54:03,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:03,405 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 16:54:03,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195228949] [2020-08-18 16:54:03,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:03,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:54:03,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052091477] [2020-08-18 16:54:03,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:54:03,416 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:03,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:54:03,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:03,434 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 4 states. [2020-08-18 16:54:04,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:04,829 INFO L93 Difference]: Finished difference Result 344 states and 448 transitions. [2020-08-18 16:54:04,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 16:54:04,831 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-18 16:54:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:04,846 INFO L225 Difference]: With dead ends: 344 [2020-08-18 16:54:04,847 INFO L226 Difference]: Without dead ends: 190 [2020-08-18 16:54:04,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:54:04,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-08-18 16:54:04,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 155. [2020-08-18 16:54:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-08-18 16:54:04,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 185 transitions. [2020-08-18 16:54:04,976 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 185 transitions. Word has length 51 [2020-08-18 16:54:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:04,977 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 185 transitions. [2020-08-18 16:54:04,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:54:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 185 transitions. [2020-08-18 16:54:04,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 16:54:04,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:04,981 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 16:54:04,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:54:04,982 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:04,982 INFO L82 PathProgramCache]: Analyzing trace with hash -155172335, now seen corresponding path program 1 times [2020-08-18 16:54:04,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:04,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537810351] [2020-08-18 16:54:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,307 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:05,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:05,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:05,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 16:54:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:05,363 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 16:54:05,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537810351] [2020-08-18 16:54:05,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:05,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 16:54:05,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704033097] [2020-08-18 16:54:05,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 16:54:05,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:05,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 16:54:05,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:54:05,367 INFO L87 Difference]: Start difference. First operand 155 states and 185 transitions. Second operand 5 states. [2020-08-18 16:54:05,903 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:07,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:07,060 INFO L93 Difference]: Finished difference Result 289 states and 359 transitions. [2020-08-18 16:54:07,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 16:54:07,061 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-08-18 16:54:07,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:07,065 INFO L225 Difference]: With dead ends: 289 [2020-08-18 16:54:07,065 INFO L226 Difference]: Without dead ends: 180 [2020-08-18 16:54:07,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-18 16:54:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-18 16:54:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 16:54:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 173 transitions. [2020-08-18 16:54:07,112 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 173 transitions. Word has length 52 [2020-08-18 16:54:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:07,113 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 173 transitions. [2020-08-18 16:54:07,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 16:54:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 173 transitions. [2020-08-18 16:54:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-18 16:54:07,115 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:07,116 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] [2020-08-18 16:54:07,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:54:07,116 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:07,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1504957008, now seen corresponding path program 1 times [2020-08-18 16:54:07,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:07,117 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1746805792] [2020-08-18 16:54:07,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,462 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 16:54:07,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:54:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:07,623 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 16:54:07,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1746805792] [2020-08-18 16:54:07,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:07,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:54:07,625 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583945906] [2020-08-18 16:54:07,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:54:07,626 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:07,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:54:07,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:54:07,635 INFO L87 Difference]: Start difference. First operand 146 states and 173 transitions. Second operand 9 states. [2020-08-18 16:54:08,052 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:08,351 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:08,613 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:08,882 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:10,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:10,455 INFO L93 Difference]: Finished difference Result 298 states and 374 transitions. [2020-08-18 16:54:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 16:54:10,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2020-08-18 16:54:10,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:10,461 INFO L225 Difference]: With dead ends: 298 [2020-08-18 16:54:10,461 INFO L226 Difference]: Without dead ends: 180 [2020-08-18 16:54:10,462 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 16:54:10,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-08-18 16:54:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 146. [2020-08-18 16:54:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 16:54:10,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 172 transitions. [2020-08-18 16:54:10,507 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 172 transitions. Word has length 56 [2020-08-18 16:54:10,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:10,508 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 172 transitions. [2020-08-18 16:54:10,508 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:54:10,508 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 172 transitions. [2020-08-18 16:54:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-08-18 16:54:10,511 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:10,511 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] [2020-08-18 16:54:10,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 16:54:10,512 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:10,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:10,513 INFO L82 PathProgramCache]: Analyzing trace with hash -775636071, now seen corresponding path program 1 times [2020-08-18 16:54:10,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:10,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929295133] [2020-08-18 16:54:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,808 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:10,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:10,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:10,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:10,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-08-18 16:54:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-08-18 16:54:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:10,944 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 16:54:10,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929295133] [2020-08-18 16:54:10,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:10,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 16:54:10,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875192265] [2020-08-18 16:54:10,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 16:54:10,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:10,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 16:54:10,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 16:54:10,946 INFO L87 Difference]: Start difference. First operand 146 states and 172 transitions. Second operand 7 states. [2020-08-18 16:54:11,311 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:12,603 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:13,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:13,522 INFO L93 Difference]: Finished difference Result 403 states and 508 transitions. [2020-08-18 16:54:13,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:54:13,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2020-08-18 16:54:13,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:13,527 INFO L225 Difference]: With dead ends: 403 [2020-08-18 16:54:13,527 INFO L226 Difference]: Without dead ends: 285 [2020-08-18 16:54:13,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 16:54:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-08-18 16:54:13,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 239. [2020-08-18 16:54:13,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-18 16:54:13,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 274 transitions. [2020-08-18 16:54:13,580 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 274 transitions. Word has length 74 [2020-08-18 16:54:13,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:13,581 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 274 transitions. [2020-08-18 16:54:13,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 16:54:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 274 transitions. [2020-08-18 16:54:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-08-18 16:54:13,582 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:13,583 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 16:54:13,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 16:54:13,583 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:13,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:13,584 INFO L82 PathProgramCache]: Analyzing trace with hash 2094752105, now seen corresponding path program 1 times [2020-08-18 16:54:13,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:13,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301190199] [2020-08-18 16:54:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,893 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:13,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:13,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 16:54:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 16:54:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:14,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-08-18 16:54:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:14,017 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 16:54:14,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301190199] [2020-08-18 16:54:14,018 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:14,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 16:54:14,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602417792] [2020-08-18 16:54:14,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 16:54:14,019 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:14,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 16:54:14,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 16:54:14,020 INFO L87 Difference]: Start difference. First operand 239 states and 274 transitions. Second operand 9 states. [2020-08-18 16:54:14,387 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:15,478 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:15,816 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:16,478 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:16,725 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:18,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:18,143 INFO L93 Difference]: Finished difference Result 708 states and 878 transitions. [2020-08-18 16:54:18,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-18 16:54:18,144 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-08-18 16:54:18,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:18,150 INFO L225 Difference]: With dead ends: 708 [2020-08-18 16:54:18,150 INFO L226 Difference]: Without dead ends: 497 [2020-08-18 16:54:18,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-08-18 16:54:18,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2020-08-18 16:54:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 426. [2020-08-18 16:54:18,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-08-18 16:54:18,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 488 transitions. [2020-08-18 16:54:18,249 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 488 transitions. Word has length 88 [2020-08-18 16:54:18,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:18,250 INFO L479 AbstractCegarLoop]: Abstraction has 426 states and 488 transitions. [2020-08-18 16:54:18,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 16:54:18,250 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 488 transitions. [2020-08-18 16:54:18,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-08-18 16:54:18,252 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:18,252 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, 1, 1, 1, 1] [2020-08-18 16:54:18,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 16:54:18,252 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:18,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:18,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1169136517, now seen corresponding path program 1 times [2020-08-18 16:54:18,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:18,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1184540735] [2020-08-18 16:54:18,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,616 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:18,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:18,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:18,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:18,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:18,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:18,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:54:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:18,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:18,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-08-18 16:54:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-18 16:54:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:18,780 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 16:54:18,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1184540735] [2020-08-18 16:54:18,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:18,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:54:18,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355499417] [2020-08-18 16:54:18,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:54:18,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:18,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:54:18,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:54:18,783 INFO L87 Difference]: Start difference. First operand 426 states and 488 transitions. Second operand 10 states. [2020-08-18 16:54:19,285 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:20,567 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:21,792 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:22,059 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:22,355 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:22,801 INFO L93 Difference]: Finished difference Result 930 states and 1135 transitions. [2020-08-18 16:54:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-18 16:54:22,801 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 92 [2020-08-18 16:54:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:22,806 INFO L225 Difference]: With dead ends: 930 [2020-08-18 16:54:22,806 INFO L226 Difference]: Without dead ends: 532 [2020-08-18 16:54:22,808 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2020-08-18 16:54:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2020-08-18 16:54:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 425. [2020-08-18 16:54:22,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-08-18 16:54:22,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 485 transitions. [2020-08-18 16:54:22,893 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 485 transitions. Word has length 92 [2020-08-18 16:54:22,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:22,894 INFO L479 AbstractCegarLoop]: Abstraction has 425 states and 485 transitions. [2020-08-18 16:54:22,894 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:54:22,894 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 485 transitions. [2020-08-18 16:54:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 16:54:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:22,897 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 16:54:22,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 16:54:22,897 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:22,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:22,898 INFO L82 PathProgramCache]: Analyzing trace with hash -1253770304, now seen corresponding path program 1 times [2020-08-18 16:54:22,898 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:22,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [13263972] [2020-08-18 16:54:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:22,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,186 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:23,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:23,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:23,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:23,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:54:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:23,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:23,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:23,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:23,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:23,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:54:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:54:23,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:23,395 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 16:54:23,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [13263972] [2020-08-18 16:54:23,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:23,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 16:54:23,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68918785] [2020-08-18 16:54:23,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 16:54:23,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:23,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 16:54:23,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-08-18 16:54:23,403 INFO L87 Difference]: Start difference. First operand 425 states and 485 transitions. Second operand 10 states. [2020-08-18 16:54:24,715 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:24,954 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:25,216 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:25,461 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:26,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:26,773 INFO L93 Difference]: Finished difference Result 937 states and 1168 transitions. [2020-08-18 16:54:26,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 16:54:26,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-08-18 16:54:26,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:26,778 INFO L225 Difference]: With dead ends: 937 [2020-08-18 16:54:26,778 INFO L226 Difference]: Without dead ends: 540 [2020-08-18 16:54:26,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:54:26,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-08-18 16:54:26,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 435. [2020-08-18 16:54:26,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-08-18 16:54:26,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 495 transitions. [2020-08-18 16:54:26,869 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 495 transitions. Word has length 108 [2020-08-18 16:54:26,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:26,870 INFO L479 AbstractCegarLoop]: Abstraction has 435 states and 495 transitions. [2020-08-18 16:54:26,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 16:54:26,870 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 495 transitions. [2020-08-18 16:54:26,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 16:54:26,872 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:26,872 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 16:54:26,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 16:54:26,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:26,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:26,874 INFO L82 PathProgramCache]: Analyzing trace with hash 685391742, now seen corresponding path program 1 times [2020-08-18 16:54:26,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:26,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304849354] [2020-08-18 16:54:26,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,163 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:27,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:27,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:27,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:54:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:27,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:27,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:27,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:27,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:54:27,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:54:27,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:27,344 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 16:54:27,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304849354] [2020-08-18 16:54:27,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:27,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 16:54:27,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357070833] [2020-08-18 16:54:27,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 16:54:27,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:27,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 16:54:27,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-08-18 16:54:27,348 INFO L87 Difference]: Start difference. First operand 435 states and 495 transitions. Second operand 12 states. [2020-08-18 16:54:27,914 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:28,182 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:28,429 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:29,113 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:29,367 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:29,610 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 16:54:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:31,139 INFO L93 Difference]: Finished difference Result 957 states and 1190 transitions. [2020-08-18 16:54:31,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 16:54:31,140 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2020-08-18 16:54:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:31,144 INFO L225 Difference]: With dead ends: 957 [2020-08-18 16:54:31,144 INFO L226 Difference]: Without dead ends: 550 [2020-08-18 16:54:31,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-08-18 16:54:31,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2020-08-18 16:54:31,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 443. [2020-08-18 16:54:31,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-18 16:54:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 503 transitions. [2020-08-18 16:54:31,230 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 503 transitions. Word has length 108 [2020-08-18 16:54:31,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:31,231 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 503 transitions. [2020-08-18 16:54:31,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 16:54:31,231 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 503 transitions. [2020-08-18 16:54:31,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-08-18 16:54:31,233 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:31,234 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 16:54:31,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 16:54:31,234 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:31,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1454561757, now seen corresponding path program 1 times [2020-08-18 16:54:31,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:31,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963930602] [2020-08-18 16:54:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,498 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:31,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:31,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 16:54:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 16:54:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:31,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:31,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:31,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:31,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:31,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-08-18 16:54:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-08-18 16:54:31,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:31,762 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 16:54:31,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963930602] [2020-08-18 16:54:31,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:54:31,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-18 16:54:31,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7810564] [2020-08-18 16:54:31,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 16:54:31,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 16:54:31,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-18 16:54:31,766 INFO L87 Difference]: Start difference. First operand 443 states and 503 transitions. Second operand 8 states. [2020-08-18 16:54:32,311 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:32,857 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:35,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:35,506 INFO L93 Difference]: Finished difference Result 1296 states and 1667 transitions. [2020-08-18 16:54:35,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-18 16:54:35,506 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 108 [2020-08-18 16:54:35,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:35,512 INFO L225 Difference]: With dead ends: 1296 [2020-08-18 16:54:35,512 INFO L226 Difference]: Without dead ends: 881 [2020-08-18 16:54:35,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-08-18 16:54:35,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2020-08-18 16:54:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 749. [2020-08-18 16:54:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-08-18 16:54:35,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 881 transitions. [2020-08-18 16:54:35,624 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 881 transitions. Word has length 108 [2020-08-18 16:54:35,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:35,624 INFO L479 AbstractCegarLoop]: Abstraction has 749 states and 881 transitions. [2020-08-18 16:54:35,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 16:54:35,625 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 881 transitions. [2020-08-18 16:54:35,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-08-18 16:54:35,627 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:35,627 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, 1, 1, 1, 1] [2020-08-18 16:54:35,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 16:54:35,627 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:35,628 INFO L82 PathProgramCache]: Analyzing trace with hash 1438503063, now seen corresponding path program 1 times [2020-08-18 16:54:35,628 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:35,628 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56569427] [2020-08-18 16:54:35,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:35,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,916 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:35,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:35,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 16:54:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 16:54:36,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:36,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:36,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:36,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-08-18 16:54:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-08-18 16:54:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:36,222 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 16:54:36,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56569427] [2020-08-18 16:54:36,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:54:36,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-18 16:54:36,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614166844] [2020-08-18 16:54:36,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-18 16:54:36,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:36,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-18 16:54:36,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-08-18 16:54:36,225 INFO L87 Difference]: Start difference. First operand 749 states and 881 transitions. Second operand 18 states. [2020-08-18 16:54:37,121 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:37,497 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:37,743 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:38,005 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:38,687 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:39,720 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:40,084 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:40,371 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:40,651 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:40,985 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:41,264 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:41,813 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:54:42,390 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 191 [2020-08-18 16:54:45,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:45,077 INFO L93 Difference]: Finished difference Result 1572 states and 1938 transitions. [2020-08-18 16:54:45,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-08-18 16:54:45,078 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 112 [2020-08-18 16:54:45,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:45,085 INFO L225 Difference]: With dead ends: 1572 [2020-08-18 16:54:45,085 INFO L226 Difference]: Without dead ends: 851 [2020-08-18 16:54:45,089 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=503, Invalid=2149, Unknown=0, NotChecked=0, Total=2652 [2020-08-18 16:54:45,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2020-08-18 16:54:45,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 728. [2020-08-18 16:54:45,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 728 states. [2020-08-18 16:54:45,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 846 transitions. [2020-08-18 16:54:45,230 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 846 transitions. Word has length 112 [2020-08-18 16:54:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:45,230 INFO L479 AbstractCegarLoop]: Abstraction has 728 states and 846 transitions. [2020-08-18 16:54:45,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-18 16:54:45,231 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 846 transitions. [2020-08-18 16:54:45,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-08-18 16:54:45,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:54:45,235 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:54:45,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 16:54:45,235 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:54:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:54:45,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2045020006, now seen corresponding path program 1 times [2020-08-18 16:54:45,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:54:45,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862855051] [2020-08-18 16:54:45,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:54:45,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,521 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 16:54:45,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:54:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:54:45,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 16:54:45,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:45,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 16:54:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 16:54:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 16:54:45,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 16:54:45,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 16:54:45,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 16:54:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 16:54:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-08-18 16:54:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-08-18 16:54:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-18 16:54:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 16:54:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 16:54:45,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 16:54:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 16:54:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-08-18 16:54:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-08-18 16:54:45,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:54:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-08-18 16:54:45,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862855051] [2020-08-18 16:54:45,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 16:54:45,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-18 16:54:45,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245418582] [2020-08-18 16:54:45,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-18 16:54:45,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:54:45,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-18 16:54:45,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-08-18 16:54:45,997 INFO L87 Difference]: Start difference. First operand 728 states and 846 transitions. Second operand 19 states. [2020-08-18 16:54:46,940 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:47,310 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:47,608 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:47,859 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 16:54:48,534 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 16:54:49,675 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:50,024 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:50,322 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:50,614 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:50,968 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:51,262 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:52,558 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:52,824 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:53,116 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:53,380 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 16:54:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:54:54,599 INFO L93 Difference]: Finished difference Result 1341 states and 1663 transitions. [2020-08-18 16:54:54,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-18 16:54:54,599 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 181 [2020-08-18 16:54:54,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:54:54,618 INFO L225 Difference]: With dead ends: 1341 [2020-08-18 16:54:54,618 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 16:54:54,625 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 825 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=539, Invalid=2541, Unknown=0, NotChecked=0, Total=3080 [2020-08-18 16:54:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 16:54:54,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 16:54:54,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 16:54:54,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 16:54:54,626 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2020-08-18 16:54:54,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:54:54,626 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 16:54:54,627 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-18 16:54:54,627 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 16:54:54,627 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 16:54:54,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 16:54:54,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 16:54:56,656 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 310 DAG size of output: 247 [2020-08-18 16:54:56,975 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207 [2020-08-18 16:54:57,286 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 204 [2020-08-18 16:54:57,388 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 223 DAG size of output: 207