/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:03:02,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:03:02,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:03:02,965 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:03:02,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:03:02,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:03:02,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:03:02,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:03:02,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:03:02,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:03:02,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:03:02,979 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:03:02,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:03:02,984 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:03:02,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:03:02,989 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:03:02,990 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:03:02,991 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:03:02,992 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:03:02,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:03:02,996 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:03:02,997 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:03:02,998 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:03:02,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:03:03,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:03:03,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:03:03,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:03:03,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:03:03,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:03:03,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:03:03,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:03:03,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:03:03,005 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:03:03,006 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:03:03,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:03:03,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:03:03,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:03:03,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:03:03,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:03:03,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:03:03,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:03:03,010 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:03:03,033 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:03:03,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:03:03,037 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:03:03,037 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:03:03,037 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:03:03,038 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:03:03,038 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:03:03,038 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:03:03,038 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:03:03,039 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:03:03,039 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:03:03,039 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:03:03,039 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:03:03,039 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:03:03,040 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:03:03,041 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:03:03,042 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:03:03,042 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:03:03,042 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:03:03,042 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:03:03,042 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:03:03,043 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:03:03,043 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:03:03,043 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:03:03,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:03:03,043 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:03:03,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:03:03,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:03:03,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:03:03,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:03:03,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:03:03,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:03:03,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:03:03,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:03:03,389 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:03:03,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 12:03:03,467 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fb6ce7d/9ad63b2517a34f86ace892b881d7ff04/FLAG630f12a2b [2020-08-18 12:03:04,098 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:03:04,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product40.cil.c [2020-08-18 12:03:04,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fb6ce7d/9ad63b2517a34f86ace892b881d7ff04/FLAG630f12a2b [2020-08-18 12:03:04,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d9fb6ce7d/9ad63b2517a34f86ace892b881d7ff04 [2020-08-18 12:03:04,407 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:03:04,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:03:04,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:04,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:03:04,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:03:04,416 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,419 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c53af82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:04, skipping insertion in model container [2020-08-18 12:03:04,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:03:04" (1/1) ... [2020-08-18 12:03:04,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:03:04,498 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:03:04,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:04,913 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:03:05,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:03:05,054 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:03:05,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05 WrapperNode [2020-08-18 12:03:05,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:03:05,055 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:03:05,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:03:05,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:03:05,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... [2020-08-18 12:03:05,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:03:05,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:03:05,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:03:05,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:03:05,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:03:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:03:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:03:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 12:03:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 12:03:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 12:03:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 12:03:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 12:03:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-18 12:03:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-18 12:03:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 12:03:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 12:03:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 12:03:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 12:03:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 12:03:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 12:03:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 12:03:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 12:03:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 12:03:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 12:03:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 12:03:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 12:03:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 12:03:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 12:03:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 12:03:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 12:03:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 12:03:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 12:03:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 12:03:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:03:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 12:03:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 12:03:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 12:03:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 12:03:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:03:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 12:03:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:03:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:03:05,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:03:06,246 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:03:06,247 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 12:03:06,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:06 BoogieIcfgContainer [2020-08-18 12:03:06,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:03:06,253 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:03:06,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:03:06,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:03:06,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:03:04" (1/3) ... [2020-08-18 12:03:06,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fb2032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:06, skipping insertion in model container [2020-08-18 12:03:06,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:03:05" (2/3) ... [2020-08-18 12:03:06,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40fb2032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:03:06, skipping insertion in model container [2020-08-18 12:03:06,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:03:06" (3/3) ... [2020-08-18 12:03:06,260 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product40.cil.c [2020-08-18 12:03:06,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:03:06,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:03:06,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:03:06,319 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:03:06,319 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:03:06,319 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:03:06,319 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:03:06,320 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:03:06,320 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:03:06,320 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:03:06,320 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:03:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states. [2020-08-18 12:03:06,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:03:06,355 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:06,356 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] [2020-08-18 12:03:06,356 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:06,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:06,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1231866733, now seen corresponding path program 1 times [2020-08-18 12:03:06,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:06,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1765431676] [2020-08-18 12:03:06,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,126 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:07,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 12:03:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:03:07,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:07,253 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:07,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1765431676] [2020-08-18 12:03:07,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:07,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:03:07,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738336297] [2020-08-18 12:03:07,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:03:07,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:07,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:03:07,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:03:07,281 INFO L87 Difference]: Start difference. First operand 189 states. Second operand 4 states. [2020-08-18 12:03:08,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:08,465 INFO L93 Difference]: Finished difference Result 324 states and 416 transitions. [2020-08-18 12:03:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:03:08,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 12:03:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:08,484 INFO L225 Difference]: With dead ends: 324 [2020-08-18 12:03:08,484 INFO L226 Difference]: Without dead ends: 179 [2020-08-18 12:03:08,489 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 [2020-08-18 12:03:08,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-08-18 12:03:08,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 146. [2020-08-18 12:03:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-08-18 12:03:08,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 171 transitions. [2020-08-18 12:03:08,588 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 171 transitions. Word has length 59 [2020-08-18 12:03:08,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:08,589 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 171 transitions. [2020-08-18 12:03:08,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:03:08,589 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 171 transitions. [2020-08-18 12:03:08,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:03:08,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:08,593 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] [2020-08-18 12:03:08,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:03:08,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:08,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:08,594 INFO L82 PathProgramCache]: Analyzing trace with hash 735941424, now seen corresponding path program 1 times [2020-08-18 12:03:08,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:08,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570615719] [2020-08-18 12:03:08,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:08,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,910 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:08,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:08,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 12:03:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-18 12:03:08,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 12:03:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:09,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570615719] [2020-08-18 12:03:09,003 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:09,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:03:09,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091607094] [2020-08-18 12:03:09,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:03:09,005 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:09,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:03:09,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:03:09,006 INFO L87 Difference]: Start difference. First operand 146 states and 171 transitions. Second operand 5 states. [2020-08-18 12:03:09,469 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:10,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:10,496 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2020-08-18 12:03:10,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 12:03:10,497 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-08-18 12:03:10,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:10,502 INFO L225 Difference]: With dead ends: 259 [2020-08-18 12:03:10,502 INFO L226 Difference]: Without dead ends: 169 [2020-08-18 12:03:10,504 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:03:10,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-08-18 12:03:10,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 137. [2020-08-18 12:03:10,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-08-18 12:03:10,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 159 transitions. [2020-08-18 12:03:10,543 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 159 transitions. Word has length 60 [2020-08-18 12:03:10,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:10,544 INFO L479 AbstractCegarLoop]: Abstraction has 137 states and 159 transitions. [2020-08-18 12:03:10,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:03:10,544 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 159 transitions. [2020-08-18 12:03:10,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-18 12:03:10,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:10,547 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] [2020-08-18 12:03:10,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:03:10,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:10,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:10,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1019781836, now seen corresponding path program 1 times [2020-08-18 12:03:10,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:10,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090387415] [2020-08-18 12:03:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:10,887 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:10,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:10,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:10,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 12:03:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 12:03:11,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:11,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090387415] [2020-08-18 12:03:11,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:11,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:11,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648523378] [2020-08-18 12:03:11,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:11,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:11,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:11,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:11,029 INFO L87 Difference]: Start difference. First operand 137 states and 159 transitions. Second operand 9 states. [2020-08-18 12:03:11,389 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:11,690 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:11,934 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:12,197 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:13,134 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:14,968 INFO L93 Difference]: Finished difference Result 460 states and 568 transitions. [2020-08-18 12:03:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-18 12:03:14,968 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 65 [2020-08-18 12:03:14,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:14,973 INFO L225 Difference]: With dead ends: 460 [2020-08-18 12:03:14,974 INFO L226 Difference]: Without dead ends: 351 [2020-08-18 12:03:14,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:14,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-08-18 12:03:15,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 290. [2020-08-18 12:03:15,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-08-18 12:03:15,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 350 transitions. [2020-08-18 12:03:15,056 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 350 transitions. Word has length 65 [2020-08-18 12:03:15,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:15,057 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 350 transitions. [2020-08-18 12:03:15,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:15,057 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 350 transitions. [2020-08-18 12:03:15,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-08-18 12:03:15,061 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:15,061 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] [2020-08-18 12:03:15,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:03:15,062 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:15,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:15,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1071873071, now seen corresponding path program 1 times [2020-08-18 12:03:15,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:15,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868163662] [2020-08-18 12:03:15,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:15,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,418 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:15,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 12:03:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 12:03:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 12:03:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-18 12:03:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 12:03:15,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868163662] [2020-08-18 12:03:15,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:15,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:15,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313603359] [2020-08-18 12:03:15,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:15,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:15,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:15,525 INFO L87 Difference]: Start difference. First operand 290 states and 350 transitions. Second operand 9 states. [2020-08-18 12:03:15,865 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:16,604 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:17,413 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:17,728 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:18,025 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:18,272 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:19,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:19,010 INFO L93 Difference]: Finished difference Result 747 states and 974 transitions. [2020-08-18 12:03:19,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 12:03:19,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-08-18 12:03:19,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:19,017 INFO L225 Difference]: With dead ends: 747 [2020-08-18 12:03:19,017 INFO L226 Difference]: Without dead ends: 485 [2020-08-18 12:03:19,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 12:03:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2020-08-18 12:03:19,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 417. [2020-08-18 12:03:19,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-08-18 12:03:19,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 501 transitions. [2020-08-18 12:03:19,122 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 501 transitions. Word has length 70 [2020-08-18 12:03:19,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:19,123 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 501 transitions. [2020-08-18 12:03:19,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:19,123 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 501 transitions. [2020-08-18 12:03:19,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:03:19,125 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:19,126 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] [2020-08-18 12:03:19,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:03:19,126 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:19,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:19,127 INFO L82 PathProgramCache]: Analyzing trace with hash -573764694, now seen corresponding path program 1 times [2020-08-18 12:03:19,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:19,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [721115069] [2020-08-18 12:03:19,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,393 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:19,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:19,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:19,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:19,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:03:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:03:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:19,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:19,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [721115069] [2020-08-18 12:03:19,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:19,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:19,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711236476] [2020-08-18 12:03:19,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:19,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:19,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:19,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:19,599 INFO L87 Difference]: Start difference. First operand 417 states and 501 transitions. Second operand 9 states. [2020-08-18 12:03:20,042 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:21,117 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,380 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:21,676 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:21,951 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:23,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:23,244 INFO L93 Difference]: Finished difference Result 1260 states and 1685 transitions. [2020-08-18 12:03:23,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 12:03:23,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 12:03:23,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:23,252 INFO L225 Difference]: With dead ends: 1260 [2020-08-18 12:03:23,253 INFO L226 Difference]: Without dead ends: 871 [2020-08-18 12:03:23,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:23,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-08-18 12:03:23,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 743. [2020-08-18 12:03:23,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2020-08-18 12:03:23,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 897 transitions. [2020-08-18 12:03:23,402 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 897 transitions. Word has length 93 [2020-08-18 12:03:23,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:23,403 INFO L479 AbstractCegarLoop]: Abstraction has 743 states and 897 transitions. [2020-08-18 12:03:23,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:23,403 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 897 transitions. [2020-08-18 12:03:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:03:23,406 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:23,406 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] [2020-08-18 12:03:23,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:03:23,407 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1995721705, now seen corresponding path program 1 times [2020-08-18 12:03:23,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:23,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708468824] [2020-08-18 12:03:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,661 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:23,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:23,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:23,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:03:23,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:03:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:23,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708468824] [2020-08-18 12:03:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:23,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 12:03:23,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082881375] [2020-08-18 12:03:23,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 12:03:23,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:23,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 12:03:23,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 12:03:23,834 INFO L87 Difference]: Start difference. First operand 743 states and 897 transitions. Second operand 9 states. [2020-08-18 12:03:24,899 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:25,148 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:25,444 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:25,681 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:26,456 INFO L93 Difference]: Finished difference Result 1585 states and 2019 transitions. [2020-08-18 12:03:26,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:03:26,457 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2020-08-18 12:03:26,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:26,463 INFO L225 Difference]: With dead ends: 1585 [2020-08-18 12:03:26,463 INFO L226 Difference]: Without dead ends: 870 [2020-08-18 12:03:26,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-18 12:03:26,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2020-08-18 12:03:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 763. [2020-08-18 12:03:26,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 763 states. [2020-08-18 12:03:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 917 transitions. [2020-08-18 12:03:26,583 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 917 transitions. Word has length 93 [2020-08-18 12:03:26,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:26,584 INFO L479 AbstractCegarLoop]: Abstraction has 763 states and 917 transitions. [2020-08-18 12:03:26,584 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 12:03:26,584 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 917 transitions. [2020-08-18 12:03:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 12:03:26,587 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:26,587 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] [2020-08-18 12:03:26,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:03:26,587 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:26,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1597645717, now seen corresponding path program 1 times [2020-08-18 12:03:26,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:26,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043283825] [2020-08-18 12:03:26,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:26,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,845 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:26,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:26,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:26,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:26,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-08-18 12:03:26,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:26,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 12:03:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 12:03:27,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:27,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:27,052 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043283825] [2020-08-18 12:03:27,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:27,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 12:03:27,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274411237] [2020-08-18 12:03:27,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 12:03:27,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 12:03:27,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:03:27,059 INFO L87 Difference]: Start difference. First operand 763 states and 917 transitions. Second operand 11 states. [2020-08-18 12:03:27,699 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:27,931 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:28,159 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:28,957 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,235 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:29,563 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:30,437 INFO L93 Difference]: Finished difference Result 1442 states and 1826 transitions. [2020-08-18 12:03:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 12:03:30,438 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 93 [2020-08-18 12:03:30,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:30,442 INFO L225 Difference]: With dead ends: 1442 [2020-08-18 12:03:30,442 INFO L226 Difference]: Without dead ends: 707 [2020-08-18 12:03:30,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 12:03:30,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-08-18 12:03:30,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 630. [2020-08-18 12:03:30,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2020-08-18 12:03:30,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 739 transitions. [2020-08-18 12:03:30,557 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 739 transitions. Word has length 93 [2020-08-18 12:03:30,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:30,557 INFO L479 AbstractCegarLoop]: Abstraction has 630 states and 739 transitions. [2020-08-18 12:03:30,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 12:03:30,557 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 739 transitions. [2020-08-18 12:03:30,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 12:03:30,559 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:30,560 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] [2020-08-18 12:03:30,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:03:30,560 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:30,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1394866514, now seen corresponding path program 1 times [2020-08-18 12:03:30,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:30,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471432127] [2020-08-18 12:03:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:30,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,884 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:30,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:30,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:30,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:30,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:30,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:03:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-08-18 12:03:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 12:03:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 12:03:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:31,034 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 12:03:31,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471432127] [2020-08-18 12:03:31,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:03:31,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 12:03:31,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481091581] [2020-08-18 12:03:31,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 12:03:31,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:31,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 12:03:31,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 12:03:31,036 INFO L87 Difference]: Start difference. First operand 630 states and 739 transitions. Second operand 12 states. [2020-08-18 12:03:31,629 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:32,370 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:33,036 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:33,351 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:33,601 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:33,890 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:34,153 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:36,008 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:36,305 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:36,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:36,749 INFO L93 Difference]: Finished difference Result 1853 states and 2361 transitions. [2020-08-18 12:03:36,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:36,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-08-18 12:03:36,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:36,760 INFO L225 Difference]: With dead ends: 1853 [2020-08-18 12:03:36,761 INFO L226 Difference]: Without dead ends: 1437 [2020-08-18 12:03:36,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 12:03:36,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2020-08-18 12:03:37,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1299. [2020-08-18 12:03:37,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1299 states. [2020-08-18 12:03:37,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1525 transitions. [2020-08-18 12:03:37,044 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1525 transitions. Word has length 97 [2020-08-18 12:03:37,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:37,048 INFO L479 AbstractCegarLoop]: Abstraction has 1299 states and 1525 transitions. [2020-08-18 12:03:37,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 12:03:37,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1525 transitions. [2020-08-18 12:03:37,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-08-18 12:03:37,054 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:37,055 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:37,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 12:03:37,055 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:37,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:37,056 INFO L82 PathProgramCache]: Analyzing trace with hash 773750625, now seen corresponding path program 1 times [2020-08-18 12:03:37,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:37,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495083811] [2020-08-18 12:03:37,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,393 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:37,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:37,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-18 12:03:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-08-18 12:03:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-08-18 12:03:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:37,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-08-18 12:03:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-08-18 12:03:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:03:37,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495083811] [2020-08-18 12:03:37,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:37,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:37,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225035906] [2020-08-18 12:03:37,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:37,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:37,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:37,781 INFO L87 Difference]: Start difference. First operand 1299 states and 1525 transitions. Second operand 16 states. [2020-08-18 12:03:38,544 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 12:03:38,886 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 12:03:39,166 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:39,435 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:03:40,172 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-08-18 12:03:40,586 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 12:03:40,909 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:03:41,290 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-08-18 12:03:41,630 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:03:42,752 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:43,711 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 191 [2020-08-18 12:03:44,225 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 12:03:44,542 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:45,123 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:45,552 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 12:03:46,183 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 194 [2020-08-18 12:03:46,757 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 204 [2020-08-18 12:03:47,309 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 12:03:47,885 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 12:03:48,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:48,742 INFO L93 Difference]: Finished difference Result 2875 states and 3500 transitions. [2020-08-18 12:03:48,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-08-18 12:03:48,742 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2020-08-18 12:03:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:48,754 INFO L225 Difference]: With dead ends: 2875 [2020-08-18 12:03:48,754 INFO L226 Difference]: Without dead ends: 1784 [2020-08-18 12:03:48,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=751, Invalid=3031, Unknown=0, NotChecked=0, Total=3782 [2020-08-18 12:03:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1784 states. [2020-08-18 12:03:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1784 to 1573. [2020-08-18 12:03:49,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1573 states. [2020-08-18 12:03:49,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1573 states to 1573 states and 1829 transitions. [2020-08-18 12:03:49,114 INFO L78 Accepts]: Start accepts. Automaton has 1573 states and 1829 transitions. Word has length 157 [2020-08-18 12:03:49,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:49,114 INFO L479 AbstractCegarLoop]: Abstraction has 1573 states and 1829 transitions. [2020-08-18 12:03:49,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 12:03:49,115 INFO L276 IsEmpty]: Start isEmpty. Operand 1573 states and 1829 transitions. [2020-08-18 12:03:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-08-18 12:03:49,122 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:49,124 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:49,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 12:03:49,125 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:49,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:49,125 INFO L82 PathProgramCache]: Analyzing trace with hash -2117575381, now seen corresponding path program 1 times [2020-08-18 12:03:49,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:49,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833288033] [2020-08-18 12:03:49,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:49,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,505 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:49,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:49,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:49,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:49,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:03:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:49,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:49,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:49,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-08-18 12:03:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2020-08-18 12:03:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-08-18 12:03:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:49,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:49,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 12:03:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:49,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 12:03:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:50,004 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 81 proven. 31 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-08-18 12:03:50,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833288033] [2020-08-18 12:03:50,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:50,007 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 12:03:50,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571644902] [2020-08-18 12:03:50,008 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 12:03:50,008 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:50,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 12:03:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 12:03:50,013 INFO L87 Difference]: Start difference. First operand 1573 states and 1829 transitions. Second operand 15 states. [2020-08-18 12:03:51,848 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:52,114 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:52,374 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:03:52,612 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:52,853 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:53,834 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:03:54,337 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 12:03:54,789 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 12:03:55,174 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 12:03:57,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:03:57,777 INFO L93 Difference]: Finished difference Result 4467 states and 5409 transitions. [2020-08-18 12:03:57,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 12:03:57,778 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2020-08-18 12:03:57,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:03:57,793 INFO L225 Difference]: With dead ends: 4467 [2020-08-18 12:03:57,794 INFO L226 Difference]: Without dead ends: 2691 [2020-08-18 12:03:57,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 105 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 12:03:57,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2691 states. [2020-08-18 12:03:58,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2691 to 2317. [2020-08-18 12:03:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2317 states. [2020-08-18 12:03:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 2705 transitions. [2020-08-18 12:03:58,266 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 2705 transitions. Word has length 273 [2020-08-18 12:03:58,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:03:58,267 INFO L479 AbstractCegarLoop]: Abstraction has 2317 states and 2705 transitions. [2020-08-18 12:03:58,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 12:03:58,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 2705 transitions. [2020-08-18 12:03:58,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-08-18 12:03:58,279 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:03:58,279 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, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:03:58,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 12:03:58,279 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:03:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:03:58,280 INFO L82 PathProgramCache]: Analyzing trace with hash 856417488, now seen corresponding path program 1 times [2020-08-18 12:03:58,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:03:58,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047490177] [2020-08-18 12:03:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:03:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,595 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:03:58,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:03:58,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:03:58,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:03:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 12:03:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 12:03:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:03:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 12:03:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-18 12:03:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-18 12:03:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 12:03:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-08-18 12:03:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 12:03:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 12:03:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 12:03:58,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 12:03:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2020-08-18 12:03:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:03:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-08-18 12:03:58,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 12:03:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:03:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:03:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-08-18 12:03:58,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:58,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2020-08-18 12:03:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:03:59,018 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 90 proven. 36 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2020-08-18 12:03:59,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047490177] [2020-08-18 12:03:59,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:03:59,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 12:03:59,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415198434] [2020-08-18 12:03:59,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 12:03:59,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:03:59,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 12:03:59,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 12:03:59,021 INFO L87 Difference]: Start difference. First operand 2317 states and 2705 transitions. Second operand 16 states. [2020-08-18 12:03:59,553 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:03:59,899 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 12:04:00,166 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 12:04:00,422 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 192