/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=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:02:02,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:02:02,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:02:02,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:02:02,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:02:02,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:02:02,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:02:02,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:02:02,941 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:02:02,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:02:02,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:02:02,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:02:02,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:02:02,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:02:02,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:02:02,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:02:02,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:02:02,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:02:02,951 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:02:02,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:02:02,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:02:02,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:02:02,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:02:02,957 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:02:02,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:02:02,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:02:02,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:02:02,961 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:02:02,962 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:02:02,963 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:02:02,963 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:02:02,964 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:02:02,965 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:02:02,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:02:02,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:02:02,967 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:02:02,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:02:02,968 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:02:02,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:02:02,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:02:02,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:02:02,970 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:02:02,992 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:02:02,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:02:02,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:02:02,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:02:02,994 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:02:02,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:02:02,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:02:02,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:02:02,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:02:02,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:02:02,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:02:02,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:02:02,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:02:02,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:02:02,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:02:02,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:02:02,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:02:02,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:02:02,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:02:02,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:02:02,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:02:02,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:02:02,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:02:02,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:02:02,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:02:02,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:02:02,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:02:02,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:02:02,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:02:02,999 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:02:03,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:02:03,299 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:02:03,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:02:03,304 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:02:03,305 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:02:03,305 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-18 21:02:03,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3c8aadb/75a6963326104112a6f6c42a56d8c824/FLAGddf79b862 [2020-08-18 21:02:03,913 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:02:03,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec5_product53.cil.c [2020-08-18 21:02:03,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3c8aadb/75a6963326104112a6f6c42a56d8c824/FLAGddf79b862 [2020-08-18 21:02:04,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b3c8aadb/75a6963326104112a6f6c42a56d8c824 [2020-08-18 21:02:04,200 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:02:04,202 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:02:04,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:04,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:02:04,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:02:04,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,211 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cafb76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04, skipping insertion in model container [2020-08-18 21:02:04,211 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:02:04,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:02:04,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:04,756 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:02:04,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:02:04,900 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:02:04,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04 WrapperNode [2020-08-18 21:02:04,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:02:04,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:02:04,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:02:04,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:02:04,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,936 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,936 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,983 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... [2020-08-18 21:02:04,997 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:02:04,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:02:04,998 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:02:04,998 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:02:04,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:02:05,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:02:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:02:05,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-18 21:02:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-18 21:02:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-18 21:02:05,059 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-18 21:02:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-18 21:02:05,060 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:02:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-18 21:02:05,061 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-18 21:02:05,062 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2020-08-18 21:02:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-18 21:02:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-18 21:02:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-18 21:02:05,063 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-18 21:02:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-18 21:02:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:05,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-18 21:02:05,065 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:02:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-18 21:02:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-18 21:02:05,066 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-18 21:02:05,067 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2020-08-18 21:02:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:02:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 21:02:05,068 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:02:05,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:02:05,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:02:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-18 21:02:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:02:05,071 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:02:05,072 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-18 21:02:05,073 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-18 21:02:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-18 21:02:05,074 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-18 21:02:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-18 21:02:05,075 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2020-08-18 21:02:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2020-08-18 21:02:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-18 21:02:05,076 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-18 21:02:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-18 21:02:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2020-08-18 21:02:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2020-08-18 21:02:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2020-08-18 21:02:05,077 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-18 21:02:05,078 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-18 21:02:05,079 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-18 21:02:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:02:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:02:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:02:05,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:02:06,166 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:02:06,166 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-18 21:02:06,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:06 BoogieIcfgContainer [2020-08-18 21:02:06,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:02:06,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:02:06,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:02:06,177 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:02:06,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:02:04" (1/3) ... [2020-08-18 21:02:06,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:06, skipping insertion in model container [2020-08-18 21:02:06,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:02:04" (2/3) ... [2020-08-18 21:02:06,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58dbddc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:02:06, skipping insertion in model container [2020-08-18 21:02:06,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:02:06" (3/3) ... [2020-08-18 21:02:06,180 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product53.cil.c [2020-08-18 21:02:06,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:02:06,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:02:06,215 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:02:06,240 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:02:06,241 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:02:06,241 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:02:06,241 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:02:06,241 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:02:06,242 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:02:06,242 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:02:06,242 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:02:06,266 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states. [2020-08-18 21:02:06,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 21:02:06,277 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:06,278 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 21:02:06,279 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:06,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:06,285 INFO L82 PathProgramCache]: Analyzing trace with hash 2103350570, now seen corresponding path program 1 times [2020-08-18 21:02:06,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:06,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880122395] [2020-08-18 21:02:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:06,979 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:06,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:07,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-18 21:02:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-08-18 21:02:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:07,102 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 21:02:07,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880122395] [2020-08-18 21:02:07,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:07,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 21:02:07,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600574759] [2020-08-18 21:02:07,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 21:02:07,113 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:07,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 21:02:07,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:07,131 INFO L87 Difference]: Start difference. First operand 199 states. Second operand 4 states. [2020-08-18 21:02:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:08,337 INFO L93 Difference]: Finished difference Result 341 states and 436 transitions. [2020-08-18 21:02:08,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 21:02:08,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-08-18 21:02:08,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:08,355 INFO L225 Difference]: With dead ends: 341 [2020-08-18 21:02:08,355 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 21:02:08,361 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-18 21:02:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 21:02:08,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-18 21:02:08,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 21:02:08,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 184 transitions. [2020-08-18 21:02:08,468 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 184 transitions. Word has length 59 [2020-08-18 21:02:08,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:08,469 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 184 transitions. [2020-08-18 21:02:08,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 21:02:08,469 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 184 transitions. [2020-08-18 21:02:08,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-08-18 21:02:08,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:08,482 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:08,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:02:08,482 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:08,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:08,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1329026362, now seen corresponding path program 1 times [2020-08-18 21:02:08,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:08,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029277867] [2020-08-18 21:02:08,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:08,909 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:08,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:08,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-18 21:02:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-08-18 21:02:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:09,033 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 21:02:09,033 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029277867] [2020-08-18 21:02:09,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:09,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:09,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767163544] [2020-08-18 21:02:09,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:09,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:09,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:09,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:09,037 INFO L87 Difference]: Start difference. First operand 156 states and 184 transitions. Second operand 9 states. [2020-08-18 21:02:09,417 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:09,809 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:10,086 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:10,338 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:11,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:11,921 INFO L93 Difference]: Finished difference Result 314 states and 391 transitions. [2020-08-18 21:02:11,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:02:11,922 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-08-18 21:02:11,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:11,926 INFO L225 Difference]: With dead ends: 314 [2020-08-18 21:02:11,926 INFO L226 Difference]: Without dead ends: 186 [2020-08-18 21:02:11,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:02:11,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-08-18 21:02:11,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 156. [2020-08-18 21:02:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-18 21:02:11,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 183 transitions. [2020-08-18 21:02:11,976 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 183 transitions. Word has length 64 [2020-08-18 21:02:11,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:11,977 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 183 transitions. [2020-08-18 21:02:11,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:11,977 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 183 transitions. [2020-08-18 21:02:11,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-08-18 21:02:11,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:11,979 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] [2020-08-18 21:02:11,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:02:11,980 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:11,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:11,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1768093168, now seen corresponding path program 1 times [2020-08-18 21:02:11,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:11,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [450260706] [2020-08-18 21:02:11,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,256 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:12,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:12,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-18 21:02:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-08-18 21:02:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:12,356 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 21:02:12,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [450260706] [2020-08-18 21:02:12,357 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:12,357 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:02:12,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938715570] [2020-08-18 21:02:12,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:02:12,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:12,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:02:12,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:12,359 INFO L87 Difference]: Start difference. First operand 156 states and 183 transitions. Second operand 7 states. [2020-08-18 21:02:12,669 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:14,169 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:14,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:14,956 INFO L93 Difference]: Finished difference Result 457 states and 594 transitions. [2020-08-18 21:02:14,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:02:14,956 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-08-18 21:02:14,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:14,964 INFO L225 Difference]: With dead ends: 457 [2020-08-18 21:02:14,964 INFO L226 Difference]: Without dead ends: 329 [2020-08-18 21:02:14,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:14,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-08-18 21:02:15,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 268. [2020-08-18 21:02:15,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-08-18 21:02:15,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 319 transitions. [2020-08-18 21:02:15,035 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 319 transitions. Word has length 82 [2020-08-18 21:02:15,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:15,035 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 319 transitions. [2020-08-18 21:02:15,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:02:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 319 transitions. [2020-08-18 21:02:15,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-08-18 21:02:15,037 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:15,037 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] [2020-08-18 21:02:15,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:02:15,037 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:15,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:15,038 INFO L82 PathProgramCache]: Analyzing trace with hash -856267590, now seen corresponding path program 1 times [2020-08-18 21:02:15,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:15,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543468510] [2020-08-18 21:02:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,386 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:15,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:15,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:15,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:15,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-18 21:02:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-08-18 21:02:15,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:15,501 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 21:02:15,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543468510] [2020-08-18 21:02:15,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:15,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-18 21:02:15,502 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957836690] [2020-08-18 21:02:15,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:02:15,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:15,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:02:15,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:02:15,504 INFO L87 Difference]: Start difference. First operand 268 states and 319 transitions. Second operand 9 states. [2020-08-18 21:02:15,863 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:16,445 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:17,231 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:17,547 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:17,966 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:18,226 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:18,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:18,920 INFO L93 Difference]: Finished difference Result 558 states and 704 transitions. [2020-08-18 21:02:18,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-18 21:02:18,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-08-18 21:02:18,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:18,929 INFO L225 Difference]: With dead ends: 558 [2020-08-18 21:02:18,930 INFO L226 Difference]: Without dead ends: 318 [2020-08-18 21:02:18,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2020-08-18 21:02:18,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-08-18 21:02:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 267. [2020-08-18 21:02:18,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-18 21:02:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 316 transitions. [2020-08-18 21:02:18,982 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 316 transitions. Word has length 96 [2020-08-18 21:02:18,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:18,983 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 316 transitions. [2020-08-18 21:02:18,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:02:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 316 transitions. [2020-08-18 21:02:18,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-08-18 21:02:18,984 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:18,985 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 21:02:18,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:02:18,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:18,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:18,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1863541240, now seen corresponding path program 1 times [2020-08-18 21:02:18,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:18,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525699843] [2020-08-18 21:02:18,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,250 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:19,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:19,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-18 21:02:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:19,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:19,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-08-18 21:02:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-18 21:02:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:19,434 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 21:02:19,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525699843] [2020-08-18 21:02:19,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:19,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:02:19,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490433805] [2020-08-18 21:02:19,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:02:19,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:19,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:02:19,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:02:19,439 INFO L87 Difference]: Start difference. First operand 267 states and 316 transitions. Second operand 10 states. [2020-08-18 21:02:20,028 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:20,646 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:20,885 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:21,125 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:21,358 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:22,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:22,323 INFO L93 Difference]: Finished difference Result 518 states and 636 transitions. [2020-08-18 21:02:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 21:02:22,324 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 93 [2020-08-18 21:02:22,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:22,326 INFO L225 Difference]: With dead ends: 518 [2020-08-18 21:02:22,327 INFO L226 Difference]: Without dead ends: 279 [2020-08-18 21:02:22,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:02:22,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-08-18 21:02:22,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 242. [2020-08-18 21:02:22,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-08-18 21:02:22,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 274 transitions. [2020-08-18 21:02:22,372 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 274 transitions. Word has length 93 [2020-08-18 21:02:22,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:22,372 INFO L479 AbstractCegarLoop]: Abstraction has 242 states and 274 transitions. [2020-08-18 21:02:22,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:02:22,372 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 274 transitions. [2020-08-18 21:02:22,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:02:22,374 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:22,374 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 21:02:22,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:02:22,374 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:22,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:22,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1010732805, now seen corresponding path program 1 times [2020-08-18 21:02:22,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:22,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267696624] [2020-08-18 21:02:22,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,629 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:22,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:22,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:22,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:22,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:02:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:02:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:22,833 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 21:02:22,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267696624] [2020-08-18 21:02:22,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:22,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-08-18 21:02:22,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179331902] [2020-08-18 21:02:22,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:02:22,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:22,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:02:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:02:22,836 INFO L87 Difference]: Start difference. First operand 242 states and 274 transitions. Second operand 11 states. [2020-08-18 21:02:23,322 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:23,585 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:23,802 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:24,489 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:24,754 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:24,987 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:25,996 INFO L93 Difference]: Finished difference Result 500 states and 606 transitions. [2020-08-18 21:02:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:02:25,996 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 97 [2020-08-18 21:02:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:25,998 INFO L225 Difference]: With dead ends: 500 [2020-08-18 21:02:25,999 INFO L226 Difference]: Without dead ends: 286 [2020-08-18 21:02:26,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-18 21:02:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-18 21:02:26,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 246. [2020-08-18 21:02:26,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-08-18 21:02:26,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 278 transitions. [2020-08-18 21:02:26,042 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 278 transitions. Word has length 97 [2020-08-18 21:02:26,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:26,043 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 278 transitions. [2020-08-18 21:02:26,043 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:02:26,043 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 278 transitions. [2020-08-18 21:02:26,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-18 21:02:26,044 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:26,044 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 21:02:26,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:02:26,045 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:26,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:26,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1340498566, now seen corresponding path program 1 times [2020-08-18 21:02:26,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:26,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321231882] [2020-08-18 21:02:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,297 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:26,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:26,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:26,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:26,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:26,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-18 21:02:26,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:26,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-18 21:02:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:26,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-08-18 21:02:26,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-18 21:02:26,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:26,436 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 21:02:26,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321231882] [2020-08-18 21:02:26,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:26,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:02:26,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420193711] [2020-08-18 21:02:26,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:02:26,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:26,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:02:26,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:02:26,439 INFO L87 Difference]: Start difference. First operand 246 states and 278 transitions. Second operand 7 states. [2020-08-18 21:02:26,941 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:27,549 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:29,480 INFO L93 Difference]: Finished difference Result 679 states and 843 transitions. [2020-08-18 21:02:29,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-18 21:02:29,480 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 97 [2020-08-18 21:02:29,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:29,485 INFO L225 Difference]: With dead ends: 679 [2020-08-18 21:02:29,485 INFO L226 Difference]: Without dead ends: 461 [2020-08-18 21:02:29,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:29,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2020-08-18 21:02:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 423. [2020-08-18 21:02:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-08-18 21:02:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 494 transitions. [2020-08-18 21:02:29,587 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 494 transitions. Word has length 97 [2020-08-18 21:02:29,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:29,587 INFO L479 AbstractCegarLoop]: Abstraction has 423 states and 494 transitions. [2020-08-18 21:02:29,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:02:29,587 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 494 transitions. [2020-08-18 21:02:29,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-08-18 21:02:29,589 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:29,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:29,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:02:29,590 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:29,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:29,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1424414732, now seen corresponding path program 1 times [2020-08-18 21:02:29,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:29,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183291125] [2020-08-18 21:02:29,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,908 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:29,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:29,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:29,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 21:02:30,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-08-18 21:02:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:30,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-18 21:02:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-08-18 21:02:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:30,096 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 21:02:30,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183291125] [2020-08-18 21:02:30,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:02:30,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-18 21:02:30,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22979916] [2020-08-18 21:02:30,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 21:02:30,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:30,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 21:02:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-08-18 21:02:30,099 INFO L87 Difference]: Start difference. First operand 423 states and 494 transitions. Second operand 12 states. [2020-08-18 21:02:30,748 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:31,360 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:32,456 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:32,776 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:33,030 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:33,293 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:33,541 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:34,834 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:35,087 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:35,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:35,852 INFO L93 Difference]: Finished difference Result 1166 states and 1447 transitions. [2020-08-18 21:02:35,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:02:35,853 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 101 [2020-08-18 21:02:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:35,862 INFO L225 Difference]: With dead ends: 1166 [2020-08-18 21:02:35,863 INFO L226 Difference]: Without dead ends: 846 [2020-08-18 21:02:35,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=306, Invalid=1026, Unknown=0, NotChecked=0, Total=1332 [2020-08-18 21:02:35,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-08-18 21:02:35,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 733. [2020-08-18 21:02:35,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-08-18 21:02:36,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 847 transitions. [2020-08-18 21:02:36,005 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 847 transitions. Word has length 101 [2020-08-18 21:02:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:36,006 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 847 transitions. [2020-08-18 21:02:36,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 21:02:36,006 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 847 transitions. [2020-08-18 21:02:36,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-08-18 21:02:36,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:36,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:36,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:02:36,014 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:36,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:36,014 INFO L82 PathProgramCache]: Analyzing trace with hash -578790576, now seen corresponding path program 1 times [2020-08-18 21:02:36,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:36,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [855951340] [2020-08-18 21:02:36,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,330 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:36,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:36,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:36,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:36,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:36,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-18 21:02:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-08-18 21:02:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-18 21:02:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:36,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-18 21:02:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-08-18 21:02:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:36,780 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-18 21:02:36,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [855951340] [2020-08-18 21:02:36,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:36,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:02:36,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332497156] [2020-08-18 21:02:36,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:02:36,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:36,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:02:36,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:36,784 INFO L87 Difference]: Start difference. First operand 733 states and 847 transitions. Second operand 16 states. [2020-08-18 21:02:37,555 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:38,023 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2020-08-18 21:02:38,286 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:38,546 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:39,180 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:39,499 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:02:39,889 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 21:02:40,601 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:40,939 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 21:02:41,721 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:42,260 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 193 [2020-08-18 21:02:42,553 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:43,078 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:43,473 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:44,091 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-08-18 21:02:44,371 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-08-18 21:02:45,042 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 195 [2020-08-18 21:02:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:45,568 INFO L93 Difference]: Finished difference Result 1574 states and 1876 transitions. [2020-08-18 21:02:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-18 21:02:45,569 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 178 [2020-08-18 21:02:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:45,577 INFO L225 Difference]: With dead ends: 1574 [2020-08-18 21:02:45,577 INFO L226 Difference]: Without dead ends: 940 [2020-08-18 21:02:45,582 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 725 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=600, Invalid=2370, Unknown=0, NotChecked=0, Total=2970 [2020-08-18 21:02:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2020-08-18 21:02:45,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 861. [2020-08-18 21:02:45,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2020-08-18 21:02:45,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1005 transitions. [2020-08-18 21:02:45,748 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1005 transitions. Word has length 178 [2020-08-18 21:02:45,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:45,749 INFO L479 AbstractCegarLoop]: Abstraction has 861 states and 1005 transitions. [2020-08-18 21:02:45,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:02:45,749 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1005 transitions. [2020-08-18 21:02:45,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-08-18 21:02:45,755 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:45,756 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:45,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:02:45,756 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:45,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:45,756 INFO L82 PathProgramCache]: Analyzing trace with hash 2132607531, now seen corresponding path program 1 times [2020-08-18 21:02:45,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:45,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129301840] [2020-08-18 21:02:45,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:45,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,062 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:46,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:46,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:02:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:46,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:46,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:02:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-08-18 21:02:46,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:46,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:46,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:02:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-18 21:02:46,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-08-18 21:02:46,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:46,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-08-18 21:02:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-08-18 21:02:46,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-08-18 21:02:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:46,593 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 77 proven. 31 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-08-18 21:02:46,595 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129301840] [2020-08-18 21:02:46,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:46,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-18 21:02:46,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608304045] [2020-08-18 21:02:46,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-18 21:02:46,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:46,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-18 21:02:46,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-18 21:02:46,598 INFO L87 Difference]: Start difference. First operand 861 states and 1005 transitions. Second operand 15 states. [2020-08-18 21:02:47,870 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 21:02:48,585 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:49,044 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:02:49,521 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 192 [2020-08-18 21:02:49,752 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:50,011 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:50,247 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:50,476 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:51,975 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:53,541 INFO L93 Difference]: Finished difference Result 2247 states and 2712 transitions. [2020-08-18 21:02:53,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-08-18 21:02:53,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 301 [2020-08-18 21:02:53,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:53,555 INFO L225 Difference]: With dead ends: 2247 [2020-08-18 21:02:53,555 INFO L226 Difference]: Without dead ends: 1387 [2020-08-18 21:02:53,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 115 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=317, Invalid=1243, Unknown=0, NotChecked=0, Total=1560 [2020-08-18 21:02:53,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-08-18 21:02:53,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1191. [2020-08-18 21:02:53,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-08-18 21:02:53,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1402 transitions. [2020-08-18 21:02:53,814 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1402 transitions. Word has length 301 [2020-08-18 21:02:53,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:02:53,815 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1402 transitions. [2020-08-18 21:02:53,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-18 21:02:53,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1402 transitions. [2020-08-18 21:02:53,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-08-18 21:02:53,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:02:53,822 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:02:53,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:02:53,822 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:02:53,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:02:53,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1264198018, now seen corresponding path program 1 times [2020-08-18 21:02:53,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:02:53,823 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232720227] [2020-08-18 21:02:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:02:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,135 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:02:54,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:02:54,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:02:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:02:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:02:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:02:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:02:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:02:54,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:02:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:02:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:02:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:02:54,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:02:54,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-18 21:02:54,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:02:54,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:02:54,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:02:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:02:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-08-18 21:02:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:02:54,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-18 21:02:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:02:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:02:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:02:54,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 288 [2020-08-18 21:02:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-18 21:02:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:02:54,580 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 85 proven. 42 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2020-08-18 21:02:54,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232720227] [2020-08-18 21:02:54,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:02:54,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-18 21:02:54,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126895672] [2020-08-18 21:02:54,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-18 21:02:54,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:02:54,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-18 21:02:54,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:02:54,583 INFO L87 Difference]: Start difference. First operand 1191 states and 1402 transitions. Second operand 16 states. [2020-08-18 21:02:55,082 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:55,406 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-08-18 21:02:55,653 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:55,888 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-08-18 21:02:56,491 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:57,288 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:02:57,632 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:57,885 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:58,373 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:59,281 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:59,528 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-18 21:02:59,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:02:59,982 INFO L93 Difference]: Finished difference Result 2264 states and 2700 transitions. [2020-08-18 21:02:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-18 21:02:59,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 303 [2020-08-18 21:02:59,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:02:59,990 INFO L225 Difference]: With dead ends: 2264 [2020-08-18 21:02:59,991 INFO L226 Difference]: Without dead ends: 1194 [2020-08-18 21:02:59,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=297, Invalid=1185, Unknown=0, NotChecked=0, Total=1482 [2020-08-18 21:02:59,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2020-08-18 21:03:00,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1151. [2020-08-18 21:03:00,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1151 states. [2020-08-18 21:03:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1335 transitions. [2020-08-18 21:03:00,223 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1335 transitions. Word has length 303 [2020-08-18 21:03:00,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:03:00,226 INFO L479 AbstractCegarLoop]: Abstraction has 1151 states and 1335 transitions. [2020-08-18 21:03:00,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-18 21:03:00,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1335 transitions. [2020-08-18 21:03:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-08-18 21:03:00,234 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:03:00,234 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:03:00,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 21:03:00,235 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:03:00,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:03:00,235 INFO L82 PathProgramCache]: Analyzing trace with hash -711568706, now seen corresponding path program 1 times [2020-08-18 21:03:00,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:03:00,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1457498775] [2020-08-18 21:03:00,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:03:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,660 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 21:03:00,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 21:03:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 21:03:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 21:03:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-08-18 21:03:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-18 21:03:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-18 21:03:00,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-18 21:03:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-18 21:03:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-08-18 21:03:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:03:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-18 21:03:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-08-18 21:03:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:03:00,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-18 21:03:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-18 21:03:00,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 21:03:00,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:00,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:00,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:00,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:03:01,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-18 21:03:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-18 21:03:01,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-08-18 21:03:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:03:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-08-18 21:03:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-18 21:03:01,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 21:03:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 21:03:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-08-18 21:03:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-08-18 21:03:01,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:03:01,134 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-08-18 21:03:01,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1457498775] [2020-08-18 21:03:01,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:03:01,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-18 21:03:01,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926265999] [2020-08-18 21:03:01,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 21:03:01,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:03:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 21:03:01,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-18 21:03:01,141 INFO L87 Difference]: Start difference. First operand 1151 states and 1335 transitions. Second operand 14 states. [2020-08-18 21:03:01,574 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 21:03:02,316 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 190