/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 13:14:33,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 13:14:33,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 13:14:33,042 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 13:14:33,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 13:14:33,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 13:14:33,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 13:14:33,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 13:14:33,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 13:14:33,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 13:14:33,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 13:14:33,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 13:14:33,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 13:14:33,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 13:14:33,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 13:14:33,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 13:14:33,077 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 13:14:33,078 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 13:14:33,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 13:14:33,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 13:14:33,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 13:14:33,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 13:14:33,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 13:14:33,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 13:14:33,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 13:14:33,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 13:14:33,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 13:14:33,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 13:14:33,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 13:14:33,103 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 13:14:33,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 13:14:33,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 13:14:33,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 13:14:33,105 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 13:14:33,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 13:14:33,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 13:14:33,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 13:14:33,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 13:14:33,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 13:14:33,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 13:14:33,111 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 13:14:33,112 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 [2020-08-21 13:14:33,157 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 13:14:33,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 13:14:33,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 13:14:33,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 13:14:33,159 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 13:14:33,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 13:14:33,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 13:14:33,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 13:14:33,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 13:14:33,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 13:14:33,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 13:14:33,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 13:14:33,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 13:14:33,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 13:14:33,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 13:14:33,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 13:14:33,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 13:14:33,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 13:14:33,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 13:14:33,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 13:14:33,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 13:14:33,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 13:14:33,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 13:14:33,165 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 13:14:33,166 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 -> false [2020-08-21 13:14:33,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 13:14:33,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 13:14:33,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 13:14:33,504 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 13:14:33,504 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 13:14:33,505 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 13:14:33,572 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b8edd1f/d297e2ff505d4d1083067aa45c6f93ad/FLAGa3ad52d47 [2020-08-21 13:14:34,188 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 13:14:34,189 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product55.cil.c [2020-08-21 13:14:34,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b8edd1f/d297e2ff505d4d1083067aa45c6f93ad/FLAGa3ad52d47 [2020-08-21 13:14:34,483 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13b8edd1f/d297e2ff505d4d1083067aa45c6f93ad [2020-08-21 13:14:34,492 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 13:14:34,494 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 13:14:34,496 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 13:14:34,496 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 13:14:34,500 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 13:14:34,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:14:34" (1/1) ... [2020-08-21 13:14:34,504 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@880c026 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:34, skipping insertion in model container [2020-08-21 13:14:34,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 01:14:34" (1/1) ... [2020-08-21 13:14:34,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 13:14:34,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 13:14:34,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:14:34,991 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 13:14:35,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 13:14:35,137 INFO L208 MainTranslator]: Completed translation [2020-08-21 13:14:35,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35 WrapperNode [2020-08-21 13:14:35,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 13:14:35,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 13:14:35,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 13:14:35,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 13:14:35,150 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,171 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,223 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,233 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (1/1) ... [2020-08-21 13:14:35,246 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 13:14:35,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 13:14:35,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 13:14:35,247 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 13:14:35,248 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (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 [2020-08-21 13:14:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 13:14:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 13:14:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-21 13:14:35,328 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-21 13:14:35,329 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-21 13:14:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-21 13:14:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-21 13:14:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-21 13:14:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 13:14:35,330 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-21 13:14:35,331 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-21 13:14:35,332 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-21 13:14:35,333 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-21 13:14:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-21 13:14:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-21 13:14:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-21 13:14:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-21 13:14:35,334 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-21 13:14:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-21 13:14:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-21 13:14:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:14:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:14:35,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 13:14:35,336 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 13:14:35,337 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-21 13:14:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 13:14:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-21 13:14:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-21 13:14:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 13:14:35,338 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-21 13:14:35,339 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-21 13:14:35,340 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-21 13:14:35,341 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-21 13:14:35,342 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-21 13:14:35,343 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 13:14:35,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 13:14:35,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 13:14:36,647 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 13:14:36,647 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-21 13:14:36,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:14:36 BoogieIcfgContainer [2020-08-21 13:14:36,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 13:14:36,659 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 13:14:36,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 13:14:36,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 13:14:36,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 01:14:34" (1/3) ... [2020-08-21 13:14:36,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cb926a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:14:36, skipping insertion in model container [2020-08-21 13:14:36,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 01:14:35" (2/3) ... [2020-08-21 13:14:36,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51cb926a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 01:14:36, skipping insertion in model container [2020-08-21 13:14:36,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 01:14:36" (3/3) ... [2020-08-21 13:14:36,668 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product55.cil.c [2020-08-21 13:14:36,679 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 13:14:36,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 13:14:36,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 13:14:36,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 13:14:36,741 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 13:14:36,741 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 13:14:36,741 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 13:14:36,742 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 13:14:36,743 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 13:14:36,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 13:14:36,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 13:14:36,774 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states. [2020-08-21 13:14:36,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 13:14:36,790 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:36,791 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] [2020-08-21 13:14:36,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:36,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:36,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1039510468, now seen corresponding path program 1 times [2020-08-21 13:14:36,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:36,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239059105] [2020-08-21 13:14:36,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,507 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:37,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:14:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-21 13:14:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-21 13:14:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:37,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:37,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239059105] [2020-08-21 13:14:37,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:37,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 13:14:37,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595626790] [2020-08-21 13:14:37,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 13:14:37,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 13:14:37,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:14:37,703 INFO L87 Difference]: Start difference. First operand 205 states. Second operand 4 states. [2020-08-21 13:14:38,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:38,961 INFO L93 Difference]: Finished difference Result 356 states and 457 transitions. [2020-08-21 13:14:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 13:14:38,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-21 13:14:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:38,979 INFO L225 Difference]: With dead ends: 356 [2020-08-21 13:14:38,979 INFO L226 Difference]: Without dead ends: 195 [2020-08-21 13:14:38,984 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-21 13:14:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-08-21 13:14:39,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 162. [2020-08-21 13:14:39,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-08-21 13:14:39,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 192 transitions. [2020-08-21 13:14:39,082 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 192 transitions. Word has length 59 [2020-08-21 13:14:39,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:39,083 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 192 transitions. [2020-08-21 13:14:39,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 13:14:39,083 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 192 transitions. [2020-08-21 13:14:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 13:14:39,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:39,105 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] [2020-08-21 13:14:39,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 13:14:39,105 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:39,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:39,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1700142027, now seen corresponding path program 1 times [2020-08-21 13:14:39,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:39,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1334356189] [2020-08-21 13:14:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,395 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:39,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-21 13:14:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-21 13:14:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:14:39,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:39,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1334356189] [2020-08-21 13:14:39,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:39,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 13:14:39,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320699580] [2020-08-21 13:14:39,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 13:14:39,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:39,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 13:14:39,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 13:14:39,458 INFO L87 Difference]: Start difference. First operand 162 states and 192 transitions. Second operand 5 states. [2020-08-21 13:14:39,928 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:40,929 INFO L93 Difference]: Finished difference Result 295 states and 361 transitions. [2020-08-21 13:14:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-21 13:14:40,930 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-21 13:14:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:40,934 INFO L225 Difference]: With dead ends: 295 [2020-08-21 13:14:40,934 INFO L226 Difference]: Without dead ends: 185 [2020-08-21 13:14:40,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:40,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-08-21 13:14:40,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 153. [2020-08-21 13:14:40,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-21 13:14:40,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 180 transitions. [2020-08-21 13:14:40,996 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 180 transitions. Word has length 60 [2020-08-21 13:14:40,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:40,997 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 180 transitions. [2020-08-21 13:14:40,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 13:14:40,997 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 180 transitions. [2020-08-21 13:14:41,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-21 13:14:41,000 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:41,000 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] [2020-08-21 13:14:41,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 13:14:41,001 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:41,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:41,001 INFO L82 PathProgramCache]: Analyzing trace with hash -1740397712, now seen corresponding path program 1 times [2020-08-21 13:14:41,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:41,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1125460786] [2020-08-21 13:14:41,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,334 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:41,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-21 13:14:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 13:14:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:41,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:41,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1125460786] [2020-08-21 13:14:41,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:41,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:41,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565245584] [2020-08-21 13:14:41,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:41,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:41,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:41,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:41,442 INFO L87 Difference]: Start difference. First operand 153 states and 180 transitions. Second operand 9 states. [2020-08-21 13:14:41,815 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:42,128 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:42,374 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:42,646 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:43,522 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:45,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:45,597 INFO L93 Difference]: Finished difference Result 508 states and 630 transitions. [2020-08-21 13:14:45,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-21 13:14:45,598 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-21 13:14:45,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:45,606 INFO L225 Difference]: With dead ends: 508 [2020-08-21 13:14:45,607 INFO L226 Difference]: Without dead ends: 383 [2020-08-21 13:14:45,608 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:14:45,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-08-21 13:14:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 326. [2020-08-21 13:14:45,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 326 states. [2020-08-21 13:14:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 396 transitions. [2020-08-21 13:14:45,684 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 396 transitions. Word has length 64 [2020-08-21 13:14:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:45,684 INFO L479 AbstractCegarLoop]: Abstraction has 326 states and 396 transitions. [2020-08-21 13:14:45,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 396 transitions. [2020-08-21 13:14:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-21 13:14:45,688 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:45,689 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] [2020-08-21 13:14:45,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 13:14:45,689 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:45,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1889366184, now seen corresponding path program 1 times [2020-08-21 13:14:45,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:45,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795554976] [2020-08-21 13:14:45,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:45,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,070 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:46,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:46,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:14:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-21 13:14:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-21 13:14:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:46,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-21 13:14:46,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795554976] [2020-08-21 13:14:46,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:46,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:46,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076362585] [2020-08-21 13:14:46,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:46,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:46,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:46,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:46,245 INFO L87 Difference]: Start difference. First operand 326 states and 396 transitions. Second operand 9 states. [2020-08-21 13:14:46,622 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:47,244 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:48,141 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:48,443 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:48,731 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:48,973 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:49,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:49,926 INFO L93 Difference]: Finished difference Result 827 states and 1076 transitions. [2020-08-21 13:14:49,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-21 13:14:49,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-21 13:14:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:49,935 INFO L225 Difference]: With dead ends: 827 [2020-08-21 13:14:49,936 INFO L226 Difference]: Without dead ends: 529 [2020-08-21 13:14:49,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-21 13:14:49,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-08-21 13:14:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 465. [2020-08-21 13:14:50,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2020-08-21 13:14:50,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 561 transitions. [2020-08-21 13:14:50,038 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 561 transitions. Word has length 70 [2020-08-21 13:14:50,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:50,038 INFO L479 AbstractCegarLoop]: Abstraction has 465 states and 561 transitions. [2020-08-21 13:14:50,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:50,038 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 561 transitions. [2020-08-21 13:14:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 13:14:50,042 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:50,042 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] [2020-08-21 13:14:50,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 13:14:50,043 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:50,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:50,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1315837753, now seen corresponding path program 1 times [2020-08-21 13:14:50,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:50,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660477081] [2020-08-21 13:14:50,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,329 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:50,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:50,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:50,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:50,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:14:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:14:50,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:50,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:50,485 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660477081] [2020-08-21 13:14:50,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:50,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-21 13:14:50,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446688586] [2020-08-21 13:14:50,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-21 13:14:50,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:50,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-21 13:14:50,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-21 13:14:50,487 INFO L87 Difference]: Start difference. First operand 465 states and 561 transitions. Second operand 9 states. [2020-08-21 13:14:51,542 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:14:51,792 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:14:52,034 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:52,268 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:53,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:53,247 INFO L93 Difference]: Finished difference Result 988 states and 1255 transitions. [2020-08-21 13:14:53,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 13:14:53,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 97 [2020-08-21 13:14:53,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:53,254 INFO L225 Difference]: With dead ends: 988 [2020-08-21 13:14:53,254 INFO L226 Difference]: Without dead ends: 551 [2020-08-21 13:14:53,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-21 13:14:53,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2020-08-21 13:14:53,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 478. [2020-08-21 13:14:53,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-21 13:14:53,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 575 transitions. [2020-08-21 13:14:53,337 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 575 transitions. Word has length 97 [2020-08-21 13:14:53,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:53,338 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 575 transitions. [2020-08-21 13:14:53,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-21 13:14:53,338 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 575 transitions. [2020-08-21 13:14:53,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 13:14:53,340 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:53,340 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] [2020-08-21 13:14:53,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 13:14:53,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:53,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1243451195, now seen corresponding path program 1 times [2020-08-21 13:14:53,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:53,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541920323] [2020-08-21 13:14:53,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,597 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:53,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:53,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:53,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:14:53,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:14:53,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:53,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:53,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541920323] [2020-08-21 13:14:53,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:53,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-21 13:14:53,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001629900] [2020-08-21 13:14:53,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-21 13:14:53,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:53,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-21 13:14:53,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-21 13:14:53,750 INFO L87 Difference]: Start difference. First operand 478 states and 575 transitions. Second operand 11 states. [2020-08-21 13:14:54,180 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:54,430 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:54,651 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:55,415 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:55,680 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:55,928 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:14:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:14:56,929 INFO L93 Difference]: Finished difference Result 1015 states and 1308 transitions. [2020-08-21 13:14:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-21 13:14:56,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-21 13:14:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:14:56,934 INFO L225 Difference]: With dead ends: 1015 [2020-08-21 13:14:56,935 INFO L226 Difference]: Without dead ends: 565 [2020-08-21 13:14:56,937 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-21 13:14:56,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2020-08-21 13:14:57,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 486. [2020-08-21 13:14:57,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-08-21 13:14:57,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 583 transitions. [2020-08-21 13:14:57,041 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 583 transitions. Word has length 97 [2020-08-21 13:14:57,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:14:57,044 INFO L479 AbstractCegarLoop]: Abstraction has 486 states and 583 transitions. [2020-08-21 13:14:57,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-21 13:14:57,044 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 583 transitions. [2020-08-21 13:14:57,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-21 13:14:57,051 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:14:57,052 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] [2020-08-21 13:14:57,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 13:14:57,053 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:14:57,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:14:57,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1573216956, now seen corresponding path program 1 times [2020-08-21 13:14:57,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:14:57,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322965328] [2020-08-21 13:14:57,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:14:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,334 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:14:57,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:57,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:14:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:14:57,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:14:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:14:57,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:14:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-21 13:14:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:14:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-21 13:14:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:57,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:57,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:14:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:14:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:14:57,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-21 13:14:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-21 13:14:57,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:14:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:14:57,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322965328] [2020-08-21 13:14:57,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:14:57,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-21 13:14:57,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498846086] [2020-08-21 13:14:57,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 13:14:57,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:14:57,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 13:14:57,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-21 13:14:57,518 INFO L87 Difference]: Start difference. First operand 486 states and 583 transitions. Second operand 7 states. [2020-08-21 13:14:57,874 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:14:58,424 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:00,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:00,799 INFO L93 Difference]: Finished difference Result 1503 states and 1948 transitions. [2020-08-21 13:15:00,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-21 13:15:00,801 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-21 13:15:00,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:00,808 INFO L225 Difference]: With dead ends: 1503 [2020-08-21 13:15:00,808 INFO L226 Difference]: Without dead ends: 1045 [2020-08-21 13:15:00,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:15:00,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2020-08-21 13:15:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 971. [2020-08-21 13:15:00,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2020-08-21 13:15:00,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1183 transitions. [2020-08-21 13:15:00,976 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1183 transitions. Word has length 97 [2020-08-21 13:15:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:00,976 INFO L479 AbstractCegarLoop]: Abstraction has 971 states and 1183 transitions. [2020-08-21 13:15:00,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 13:15:00,977 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1183 transitions. [2020-08-21 13:15:00,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-21 13:15:00,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:00,980 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] [2020-08-21 13:15:00,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 13:15:00,981 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:00,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 164101122, now seen corresponding path program 1 times [2020-08-21 13:15:00,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:00,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169232704] [2020-08-21 13:15:00,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,312 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:01,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:01,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 13:15:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:01,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-21 13:15:01,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:01,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:01,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:01,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-21 13:15:01,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-21 13:15:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:01,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-21 13:15:01,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [169232704] [2020-08-21 13:15:01,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 13:15:01,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-21 13:15:01,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363115138] [2020-08-21 13:15:01,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-21 13:15:01,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:01,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-21 13:15:01,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-21 13:15:01,497 INFO L87 Difference]: Start difference. First operand 971 states and 1183 transitions. Second operand 12 states. [2020-08-21 13:15:01,901 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:02,639 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:03,294 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:03,613 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:03,892 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:04,169 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:04,481 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:06,602 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:06,962 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:07,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:07,648 INFO L93 Difference]: Finished difference Result 2749 states and 3568 transitions. [2020-08-21 13:15:07,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 13:15:07,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-21 13:15:07,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:07,660 INFO L225 Difference]: With dead ends: 2749 [2020-08-21 13:15:07,660 INFO L226 Difference]: Without dead ends: 2004 [2020-08-21 13:15:07,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-21 13:15:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2004 states. [2020-08-21 13:15:08,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2004 to 1704. [2020-08-21 13:15:08,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-08-21 13:15:08,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2058 transitions. [2020-08-21 13:15:08,057 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2058 transitions. Word has length 101 [2020-08-21 13:15:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:08,061 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2058 transitions. [2020-08-21 13:15:08,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-21 13:15:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2058 transitions. [2020-08-21 13:15:08,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-21 13:15:08,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:08,069 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 13:15:08,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-21 13:15:08,069 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:08,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:08,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1947078735, now seen corresponding path program 1 times [2020-08-21 13:15:08,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:08,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213118100] [2020-08-21 13:15:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,404 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:08,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:08,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:08,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:08,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:15:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-21 13:15:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:08,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-21 13:15:08,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-21 13:15:08,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:08,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:15:08,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:08,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:08,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:08,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-21 13:15:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-21 13:15:08,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-21 13:15:08,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213118100] [2020-08-21 13:15:08,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:08,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:15:08,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355053763] [2020-08-21 13:15:08,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:15:08,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:15:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:15:08,816 INFO L87 Difference]: Start difference. First operand 1704 states and 2058 transitions. Second operand 16 states. [2020-08-21 13:15:09,596 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:15:10,049 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 13:15:10,447 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 13:15:10,824 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 13:15:11,574 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 13:15:11,881 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:12,305 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-21 13:15:12,749 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 13:15:13,872 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:14,403 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:14,939 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-21 13:15:15,278 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:15,815 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:16,207 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:16,759 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-21 13:15:17,187 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-21 13:15:17,953 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-21 13:15:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:18,618 INFO L93 Difference]: Finished difference Result 3639 states and 4528 transitions. [2020-08-21 13:15:18,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-08-21 13:15:18,619 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-21 13:15:18,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:18,632 INFO L225 Difference]: With dead ends: 3639 [2020-08-21 13:15:18,632 INFO L226 Difference]: Without dead ends: 2149 [2020-08-21 13:15:18,640 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 898 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=682, Invalid=2740, Unknown=0, NotChecked=0, Total=3422 [2020-08-21 13:15:18,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2149 states. [2020-08-21 13:15:19,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2149 to 1971. [2020-08-21 13:15:19,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1971 states. [2020-08-21 13:15:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1971 states to 1971 states and 2328 transitions. [2020-08-21 13:15:19,068 INFO L78 Accepts]: Start accepts. Automaton has 1971 states and 2328 transitions. Word has length 178 [2020-08-21 13:15:19,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:19,069 INFO L479 AbstractCegarLoop]: Abstraction has 1971 states and 2328 transitions. [2020-08-21 13:15:19,069 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-21 13:15:19,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1971 states and 2328 transitions. [2020-08-21 13:15:19,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-08-21 13:15:19,080 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:19,081 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:15:19,081 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-21 13:15:19,081 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:19,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:19,082 INFO L82 PathProgramCache]: Analyzing trace with hash -1357647421, now seen corresponding path program 1 times [2020-08-21 13:15:19,082 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:19,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1351794122] [2020-08-21 13:15:19,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,518 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:19,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:19,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:15:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:15:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:19,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:15:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:15:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-21 13:15:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:19,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:15:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:15:19,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-08-21 13:15:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 13:15:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:19,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:19,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-08-21 13:15:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:19,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-21 13:15:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:20,132 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 76 proven. 31 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2020-08-21 13:15:20,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1351794122] [2020-08-21 13:15:20,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:20,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-21 13:15:20,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895057733] [2020-08-21 13:15:20,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-21 13:15:20,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:20,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-21 13:15:20,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-21 13:15:20,137 INFO L87 Difference]: Start difference. First operand 1971 states and 2328 transitions. Second operand 15 states. [2020-08-21 13:15:21,665 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:21,927 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:22,171 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:22,425 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 13:15:22,660 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:23,791 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-21 13:15:24,298 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 13:15:24,758 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-21 13:15:25,032 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-21 13:15:28,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 13:15:28,137 INFO L93 Difference]: Finished difference Result 5414 states and 6621 transitions. [2020-08-21 13:15:28,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-21 13:15:28,138 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 297 [2020-08-21 13:15:28,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 13:15:28,155 INFO L225 Difference]: With dead ends: 5414 [2020-08-21 13:15:28,156 INFO L226 Difference]: Without dead ends: 3267 [2020-08-21 13:15:28,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-21 13:15:28,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3267 states. [2020-08-21 13:15:28,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3267 to 2803. [2020-08-21 13:15:28,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2020-08-21 13:15:28,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3345 transitions. [2020-08-21 13:15:28,754 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3345 transitions. Word has length 297 [2020-08-21 13:15:28,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 13:15:28,755 INFO L479 AbstractCegarLoop]: Abstraction has 2803 states and 3345 transitions. [2020-08-21 13:15:28,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-21 13:15:28,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3345 transitions. [2020-08-21 13:15:28,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-08-21 13:15:28,766 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 13:15:28,767 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-08-21 13:15:28,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-21 13:15:28,767 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 13:15:28,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 13:15:28,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1075598306, now seen corresponding path program 1 times [2020-08-21 13:15:28,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 13:15:28,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746207547] [2020-08-21 13:15:28,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 13:15:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,104 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 13:15:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 13:15:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:29,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 13:15:29,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 13:15:29,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-21 13:15:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-21 13:15:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-21 13:15:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-21 13:15:29,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-21 13:15:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-21 13:15:29,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:15:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 13:15:29,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-21 13:15:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 13:15:29,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-21 13:15:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-21 13:15:29,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-21 13:15:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-21 13:15:29,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-21 13:15:29,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-08-21 13:15:29,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-08-21 13:15:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 13:15:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-08-21 13:15:29,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-21 13:15:29,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 13:15:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 13:15:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-21 13:15:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-21 13:15:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 13:15:29,636 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 86 proven. 42 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-08-21 13:15:29,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746207547] [2020-08-21 13:15:29,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 13:15:29,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-21 13:15:29,639 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719798159] [2020-08-21 13:15:29,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-21 13:15:29,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 13:15:29,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-21 13:15:29,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-21 13:15:29,641 INFO L87 Difference]: Start difference. First operand 2803 states and 3345 transitions. Second operand 16 states. [2020-08-21 13:15:30,349 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 13:15:30,833 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 192