/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:49:41,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:49:41,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:49:41,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:49:41,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:49:41,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:49:41,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:49:41,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:49:41,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:49:41,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:49:41,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:49:41,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:49:41,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:49:41,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:49:41,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:49:41,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:49:41,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:49:41,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:49:42,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:49:42,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:49:42,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:49:42,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:49:42,011 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:49:42,012 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:49:42,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:49:42,014 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:49:42,015 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:49:42,015 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:49:42,017 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:49:42,018 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 01:49:42,018 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 01:49:42,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 01:49:42,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 01:49:42,021 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 01:49:42,023 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 01:49:42,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 01:49:42,024 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 01:49:42,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 01:49:42,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:49:42,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:49:42,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:49:42,028 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 [2020-08-19 01:49:42,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:49:42,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:49:42,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:49:42,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:49:42,086 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:49:42,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:49:42,086 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:49:42,086 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:49:42,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:49:42,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:49:42,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:49:42,087 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:49:42,087 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:49:42,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:49:42,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:49:42,088 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:49:42,088 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:49:42,088 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:49:42,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:49:42,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:49:42,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:49:42,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:49:42,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:49:42,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:49:42,092 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:49:42,417 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:49:42,439 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:49:42,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:49:42,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:49:42,445 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:49:42,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-19 01:49:42,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8959f761/8deffaef3cfb4b45a46b4bb0a3163447/FLAG7f8ffd126 [2020-08-19 01:49:43,033 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:49:43,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/product-lines/minepump_spec4_product36.cil.c [2020-08-19 01:49:43,048 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8959f761/8deffaef3cfb4b45a46b4bb0a3163447/FLAG7f8ffd126 [2020-08-19 01:49:43,299 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f8959f761/8deffaef3cfb4b45a46b4bb0a3163447 [2020-08-19 01:49:43,310 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:49:43,311 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:49:43,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:49:43,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:49:43,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:49:43,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:43,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69168dbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43, skipping insertion in model container [2020-08-19 01:49:43,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:43,328 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:49:43,369 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:49:43,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:49:43,819 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:49:43,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:49:43,934 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:49:43,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43 WrapperNode [2020-08-19 01:49:43,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:49:43,936 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:49:43,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:49:43,937 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:49:43,948 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:43,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:43,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:43,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:44,011 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:44,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:44,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (1/1) ... [2020-08-19 01:49:44,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:49:44,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:49:44,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:49:44,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:49:44,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (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 [2020-08-19 01:49:44,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2020-08-19 01:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2020-08-19 01:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2020-08-19 01:49:44,097 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2020-08-19 01:49:44,098 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2020-08-19 01:49:44,099 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2020-08-19 01:49:44,100 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2020-08-19 01:49:44,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2020-08-19 01:49:44,102 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2020-08-19 01:49:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2020-08-19 01:49:44,103 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-19 01:49:44,103 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure test [2020-08-19 01:49:44,104 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2020-08-19 01:49:44,105 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2020-08-19 01:49:44,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2020-08-19 01:49:44,107 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 01:49:44,108 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2020-08-19 01:49:44,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2020-08-19 01:49:44,110 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2020-08-19 01:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2020-08-19 01:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 01:49:44,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:49:45,161 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:49:45,161 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-19 01:49:45,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:49:45 BoogieIcfgContainer [2020-08-19 01:49:45,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:49:45,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:49:45,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:49:45,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:49:45,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:49:43" (1/3) ... [2020-08-19 01:49:45,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28985e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:49:45, skipping insertion in model container [2020-08-19 01:49:45,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:49:43" (2/3) ... [2020-08-19 01:49:45,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28985e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:49:45, skipping insertion in model container [2020-08-19 01:49:45,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:49:45" (3/3) ... [2020-08-19 01:49:45,175 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product36.cil.c [2020-08-19 01:49:45,186 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:49:45,195 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:49:45,210 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:49:45,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:49:45,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:49:45,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:49:45,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:49:45,234 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:49:45,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:49:45,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:49:45,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:49:45,256 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states. [2020-08-19 01:49:45,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-08-19 01:49:45,266 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:49:45,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:49:45,268 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:49:45,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:49:45,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1806854140, now seen corresponding path program 1 times [2020-08-19 01:49:45,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:49:45,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1539806358] [2020-08-19 01:49:45,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:49:45,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:45,999 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:49:46,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:49:46,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:49:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:49:46,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:49:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:49:46,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-08-19 01:49:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:49:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:46,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:49:46,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1539806358] [2020-08-19 01:49:46,108 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:49:46,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 01:49:46,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906142157] [2020-08-19 01:49:46,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 01:49:46,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:49:46,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 01:49:46,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:49:46,135 INFO L87 Difference]: Start difference. First operand 161 states. Second operand 3 states. [2020-08-19 01:49:47,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:49:47,230 INFO L93 Difference]: Finished difference Result 278 states and 364 transitions. [2020-08-19 01:49:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 01:49:47,232 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-08-19 01:49:47,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:49:47,248 INFO L225 Difference]: With dead ends: 278 [2020-08-19 01:49:47,248 INFO L226 Difference]: Without dead ends: 151 [2020-08-19 01:49:47,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 01:49:47,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-08-19 01:49:47,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 118. [2020-08-19 01:49:47,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-08-19 01:49:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2020-08-19 01:49:47,344 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 46 [2020-08-19 01:49:47,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:49:47,345 INFO L479 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2020-08-19 01:49:47,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 01:49:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2020-08-19 01:49:47,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-08-19 01:49:47,349 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:49:47,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:49:47,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:49:47,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:49:47,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:49:47,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1793827304, now seen corresponding path program 1 times [2020-08-19 01:49:47,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:49:47,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706396455] [2020-08-19 01:49:47,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:49:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,699 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:49:47,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:49:47,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:49:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:49:47,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:49:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:49:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:49:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 01:49:47,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:47,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:49:47,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706396455] [2020-08-19 01:49:47,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:49:47,777 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:49:47,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998524631] [2020-08-19 01:49:47,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:49:47,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:49:47,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:49:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:49:47,780 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand 4 states. [2020-08-19 01:49:48,262 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:49:48,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:49:48,987 INFO L93 Difference]: Finished difference Result 198 states and 241 transitions. [2020-08-19 01:49:48,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:49:48,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2020-08-19 01:49:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:49:48,990 INFO L225 Difference]: With dead ends: 198 [2020-08-19 01:49:48,991 INFO L226 Difference]: Without dead ends: 135 [2020-08-19 01:49:48,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:49:48,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-08-19 01:49:49,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 109. [2020-08-19 01:49:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-08-19 01:49:49,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 125 transitions. [2020-08-19 01:49:49,027 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 125 transitions. Word has length 47 [2020-08-19 01:49:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:49:49,027 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 125 transitions. [2020-08-19 01:49:49,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:49:49,028 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 125 transitions. [2020-08-19 01:49:49,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 01:49:49,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:49:49,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:49:49,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:49:49,030 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:49:49,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:49:49,031 INFO L82 PathProgramCache]: Analyzing trace with hash 25908157, now seen corresponding path program 1 times [2020-08-19 01:49:49,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:49:49,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466369920] [2020-08-19 01:49:49,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:49:49,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,380 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:49:49,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:49:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:49:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:49:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:49:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:49:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-19 01:49:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-19 01:49:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:49,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:49:49,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466369920] [2020-08-19 01:49:49,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:49:49,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 01:49:49,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309482270] [2020-08-19 01:49:49,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:49:49,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:49:49,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:49:49,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:49:49,480 INFO L87 Difference]: Start difference. First operand 109 states and 125 transitions. Second operand 8 states. [2020-08-19 01:49:49,863 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:49:50,192 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:50,455 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:50,687 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:51,412 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:49:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:49:52,815 INFO L93 Difference]: Finished difference Result 378 states and 466 transitions. [2020-08-19 01:49:52,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:49:52,816 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-08-19 01:49:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:49:52,821 INFO L225 Difference]: With dead ends: 378 [2020-08-19 01:49:52,821 INFO L226 Difference]: Without dead ends: 293 [2020-08-19 01:49:52,822 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:49:52,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-08-19 01:49:52,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 220. [2020-08-19 01:49:52,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-08-19 01:49:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 262 transitions. [2020-08-19 01:49:52,887 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 262 transitions. Word has length 52 [2020-08-19 01:49:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:49:52,887 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 262 transitions. [2020-08-19 01:49:52,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:49:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 262 transitions. [2020-08-19 01:49:52,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-19 01:49:52,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:49:52,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:49:52,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:49:52,890 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:49:52,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:49:52,891 INFO L82 PathProgramCache]: Analyzing trace with hash -388118307, now seen corresponding path program 1 times [2020-08-19 01:49:52,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:49:52,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610395107] [2020-08-19 01:49:52,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:49:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,171 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:49:53,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:49:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:49:53,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:49:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:49:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:49:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:49:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-08-19 01:49:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-08-19 01:49:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:49:53,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610395107] [2020-08-19 01:49:53,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:49:53,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-19 01:49:53,277 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684744750] [2020-08-19 01:49:53,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:49:53,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:49:53,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:49:53,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:49:53,279 INFO L87 Difference]: Start difference. First operand 220 states and 262 transitions. Second operand 12 states. [2020-08-19 01:49:53,722 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:49:54,050 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:54,301 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:54,527 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:55,146 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:49:55,876 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:56,214 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:49:56,486 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:49:56,776 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:49:57,018 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:49:57,370 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:49:57,649 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:49:57,887 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:49:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:49:59,346 INFO L93 Difference]: Finished difference Result 881 states and 1222 transitions. [2020-08-19 01:49:59,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:49:59,347 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2020-08-19 01:49:59,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:49:59,361 INFO L225 Difference]: With dead ends: 881 [2020-08-19 01:49:59,362 INFO L226 Difference]: Without dead ends: 685 [2020-08-19 01:49:59,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2020-08-19 01:49:59,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-08-19 01:49:59,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 592. [2020-08-19 01:49:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 592 states. [2020-08-19 01:49:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 744 transitions. [2020-08-19 01:49:59,518 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 744 transitions. Word has length 57 [2020-08-19 01:49:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:49:59,519 INFO L479 AbstractCegarLoop]: Abstraction has 592 states and 744 transitions. [2020-08-19 01:49:59,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:49:59,519 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 744 transitions. [2020-08-19 01:49:59,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:49:59,523 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:49:59,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:49:59,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:49:59,524 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:49:59,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:49:59,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1713773635, now seen corresponding path program 1 times [2020-08-19 01:49:59,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:49:59,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792433933] [2020-08-19 01:49:59,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:49:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,785 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:49:59,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:49:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:49:59,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:49:59,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:49:59,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:49:59,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:49:59,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 01:49:59,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 01:49:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-08-19 01:49:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:49:59,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:49:59,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792433933] [2020-08-19 01:49:59,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:49:59,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 01:49:59,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284192270] [2020-08-19 01:49:59,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:49:59,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:49:59,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:49:59,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:49:59,884 INFO L87 Difference]: Start difference. First operand 592 states and 744 transitions. Second operand 6 states. [2020-08-19 01:50:00,200 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:01,922 INFO L93 Difference]: Finished difference Result 1481 states and 1983 transitions. [2020-08-19 01:50:01,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:50:01,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 01:50:01,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:01,933 INFO L225 Difference]: With dead ends: 1481 [2020-08-19 01:50:01,933 INFO L226 Difference]: Without dead ends: 913 [2020-08-19 01:50:01,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:50:01,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2020-08-19 01:50:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 846. [2020-08-19 01:50:02,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 846 states. [2020-08-19 01:50:02,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1064 transitions. [2020-08-19 01:50:02,145 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1064 transitions. Word has length 61 [2020-08-19 01:50:02,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:02,146 INFO L479 AbstractCegarLoop]: Abstraction has 846 states and 1064 transitions. [2020-08-19 01:50:02,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:50:02,146 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1064 transitions. [2020-08-19 01:50:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-08-19 01:50:02,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:02,152 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 01:50:02,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:50:02,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:02,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:02,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1637256011, now seen corresponding path program 1 times [2020-08-19 01:50:02,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:02,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920231425] [2020-08-19 01:50:02,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,458 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:02,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:02,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 01:50:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 01:50:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:50:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 01:50:02,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:02,617 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 01:50:02,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920231425] [2020-08-19 01:50:02,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:02,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:02,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530218304] [2020-08-19 01:50:02,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:02,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:02,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:02,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:02,619 INFO L87 Difference]: Start difference. First operand 846 states and 1064 transitions. Second operand 10 states. [2020-08-19 01:50:03,243 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 186 [2020-08-19 01:50:03,839 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:05,683 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:07,172 INFO L93 Difference]: Finished difference Result 1633 states and 2139 transitions. [2020-08-19 01:50:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:50:07,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 89 [2020-08-19 01:50:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:07,181 INFO L225 Difference]: With dead ends: 1633 [2020-08-19 01:50:07,181 INFO L226 Difference]: Without dead ends: 1048 [2020-08-19 01:50:07,184 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:50:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2020-08-19 01:50:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 953. [2020-08-19 01:50:07,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-19 01:50:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1176 transitions. [2020-08-19 01:50:07,391 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1176 transitions. Word has length 89 [2020-08-19 01:50:07,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:07,393 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1176 transitions. [2020-08-19 01:50:07,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:07,394 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1176 transitions. [2020-08-19 01:50:07,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-19 01:50:07,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:07,400 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 01:50:07,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:50:07,400 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:07,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:07,401 INFO L82 PathProgramCache]: Analyzing trace with hash 1243870907, now seen corresponding path program 1 times [2020-08-19 01:50:07,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:07,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2173403] [2020-08-19 01:50:07,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,756 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:07,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:07,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:50:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:50:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 01:50:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:50:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:50:07,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 01:50:07,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:07,974 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:50:07,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2173403] [2020-08-19 01:50:07,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:07,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:07,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424511632] [2020-08-19 01:50:07,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:07,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:07,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:07,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:07,977 INFO L87 Difference]: Start difference. First operand 953 states and 1176 transitions. Second operand 12 states. [2020-08-19 01:50:08,566 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:08,818 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:09,051 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:09,697 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:09,949 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:10,206 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:11,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:11,124 INFO L93 Difference]: Finished difference Result 1984 states and 2566 transitions. [2020-08-19 01:50:11,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:50:11,125 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-19 01:50:11,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:11,136 INFO L225 Difference]: With dead ends: 1984 [2020-08-19 01:50:11,136 INFO L226 Difference]: Without dead ends: 1055 [2020-08-19 01:50:11,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:50:11,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-08-19 01:50:11,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 953. [2020-08-19 01:50:11,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 953 states. [2020-08-19 01:50:11,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 953 states to 953 states and 1172 transitions. [2020-08-19 01:50:11,434 INFO L78 Accepts]: Start accepts. Automaton has 953 states and 1172 transitions. Word has length 115 [2020-08-19 01:50:11,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:11,435 INFO L479 AbstractCegarLoop]: Abstraction has 953 states and 1172 transitions. [2020-08-19 01:50:11,435 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:11,435 INFO L276 IsEmpty]: Start isEmpty. Operand 953 states and 1172 transitions. [2020-08-19 01:50:11,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-19 01:50:11,440 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:11,440 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 01:50:11,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:50:11,440 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash 289930749, now seen corresponding path program 1 times [2020-08-19 01:50:11,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:11,443 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816853660] [2020-08-19 01:50:11,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,776 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:11,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:11,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:11,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-19 01:50:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:11,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:11,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:11,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:50:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:11,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-08-19 01:50:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 01:50:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:50:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:50:11,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 01:50:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-19 01:50:11,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816853660] [2020-08-19 01:50:11,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:11,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:50:11,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134712679] [2020-08-19 01:50:11,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:50:11,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:11,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:50:11,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:50:11,947 INFO L87 Difference]: Start difference. First operand 953 states and 1172 transitions. Second operand 10 states. [2020-08-19 01:50:12,908 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:13,153 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-08-19 01:50:13,396 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:13,631 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:14,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:14,347 INFO L93 Difference]: Finished difference Result 1803 states and 2279 transitions. [2020-08-19 01:50:14,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:50:14,348 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 115 [2020-08-19 01:50:14,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:14,353 INFO L225 Difference]: With dead ends: 1803 [2020-08-19 01:50:14,354 INFO L226 Difference]: Without dead ends: 874 [2020-08-19 01:50:14,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:50:14,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-08-19 01:50:14,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 822. [2020-08-19 01:50:14,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-08-19 01:50:14,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 993 transitions. [2020-08-19 01:50:14,520 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 993 transitions. Word has length 115 [2020-08-19 01:50:14,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:14,521 INFO L479 AbstractCegarLoop]: Abstraction has 822 states and 993 transitions. [2020-08-19 01:50:14,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:50:14,521 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 993 transitions. [2020-08-19 01:50:14,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-19 01:50:14,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:14,525 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-19 01:50:14,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:50:14,526 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1415201690, now seen corresponding path program 1 times [2020-08-19 01:50:14,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:14,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974010972] [2020-08-19 01:50:14,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,863 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:14,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:14,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:14,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:14,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:14,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:14,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:50:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:14,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-08-19 01:50:14,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:15,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 01:50:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:15,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:15,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-19 01:50:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:15,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-19 01:50:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:15,061 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-19 01:50:15,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974010972] [2020-08-19 01:50:15,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:15,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:50:15,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831255156] [2020-08-19 01:50:15,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:50:15,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:15,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:50:15,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:50:15,064 INFO L87 Difference]: Start difference. First operand 822 states and 993 transitions. Second operand 12 states. [2020-08-19 01:50:15,498 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:16,386 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 01:50:16,660 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:16,893 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:17,121 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:17,342 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:17,690 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:18,266 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:18,526 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:18,788 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:20,249 INFO L93 Difference]: Finished difference Result 2004 states and 2576 transitions. [2020-08-19 01:50:20,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 01:50:20,251 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 115 [2020-08-19 01:50:20,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:20,259 INFO L225 Difference]: With dead ends: 2004 [2020-08-19 01:50:20,259 INFO L226 Difference]: Without dead ends: 1355 [2020-08-19 01:50:20,263 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:50:20,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1355 states. [2020-08-19 01:50:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1355 to 1183. [2020-08-19 01:50:20,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1183 states. [2020-08-19 01:50:20,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1447 transitions. [2020-08-19 01:50:20,509 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1447 transitions. Word has length 115 [2020-08-19 01:50:20,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:20,510 INFO L479 AbstractCegarLoop]: Abstraction has 1183 states and 1447 transitions. [2020-08-19 01:50:20,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:50:20,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1447 transitions. [2020-08-19 01:50:20,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-08-19 01:50:20,516 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:20,516 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:20,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:50:20,517 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:20,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:20,517 INFO L82 PathProgramCache]: Analyzing trace with hash -182454868, now seen corresponding path program 1 times [2020-08-19 01:50:20,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:20,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637715537] [2020-08-19 01:50:20,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:20,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,791 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:20,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:20,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:20,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:20,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:50:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:50:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:50:20,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 01:50:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-08-19 01:50:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-08-19 01:50:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-08-19 01:50:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-08-19 01:50:20,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637715537] [2020-08-19 01:50:20,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:20,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:50:20,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456613208] [2020-08-19 01:50:20,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:50:20,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:20,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:50:20,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:50:20,979 INFO L87 Difference]: Start difference. First operand 1183 states and 1447 transitions. Second operand 13 states. [2020-08-19 01:50:21,469 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:21,707 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:21,931 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 01:50:22,395 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:23,330 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:24,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:24,804 INFO L93 Difference]: Finished difference Result 2158 states and 2710 transitions. [2020-08-19 01:50:24,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 01:50:24,804 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 148 [2020-08-19 01:50:24,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:24,811 INFO L225 Difference]: With dead ends: 2158 [2020-08-19 01:50:24,812 INFO L226 Difference]: Without dead ends: 1199 [2020-08-19 01:50:24,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:50:24,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2020-08-19 01:50:24,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 877. [2020-08-19 01:50:24,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 877 states. [2020-08-19 01:50:25,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1022 transitions. [2020-08-19 01:50:25,002 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1022 transitions. Word has length 148 [2020-08-19 01:50:25,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:25,002 INFO L479 AbstractCegarLoop]: Abstraction has 877 states and 1022 transitions. [2020-08-19 01:50:25,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:50:25,003 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1022 transitions. [2020-08-19 01:50:25,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-08-19 01:50:25,005 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:25,006 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:25,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:50:25,006 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:25,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:25,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1037640305, now seen corresponding path program 2 times [2020-08-19 01:50:25,007 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:25,007 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220833673] [2020-08-19 01:50:25,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,296 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-08-19 01:50:25,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:50:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 01:50:25,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 01:50:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 01:50:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 01:50:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 01:50:25,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:25,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-19 01:50:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 01:50:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 01:50:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:50:25,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:25,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:50:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 01:50:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-19 01:50:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-08-19 01:50:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-08-19 01:50:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:50:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-08-19 01:50:25,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-08-19 01:50:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:50:25,518 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 18 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-19 01:50:25,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220833673] [2020-08-19 01:50:25,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:50:25,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 01:50:25,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232516647] [2020-08-19 01:50:25,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:50:25,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:50:25,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:50:25,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:50:25,521 INFO L87 Difference]: Start difference. First operand 877 states and 1022 transitions. Second operand 14 states. [2020-08-19 01:50:25,934 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:26,569 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:27,129 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:27,430 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:27,688 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:27,954 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:28,276 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:28,540 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 01:50:29,888 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-08-19 01:50:30,125 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-08-19 01:50:31,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:50:31,022 INFO L93 Difference]: Finished difference Result 2124 states and 2708 transitions. [2020-08-19 01:50:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 01:50:31,023 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 155 [2020-08-19 01:50:31,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:50:31,030 INFO L225 Difference]: With dead ends: 2124 [2020-08-19 01:50:31,030 INFO L226 Difference]: Without dead ends: 1420 [2020-08-19 01:50:31,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 57 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=306, Invalid=884, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 01:50:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2020-08-19 01:50:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 870. [2020-08-19 01:50:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 870 states. [2020-08-19 01:50:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 870 states to 870 states and 1022 transitions. [2020-08-19 01:50:31,249 INFO L78 Accepts]: Start accepts. Automaton has 870 states and 1022 transitions. Word has length 155 [2020-08-19 01:50:31,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:50:31,249 INFO L479 AbstractCegarLoop]: Abstraction has 870 states and 1022 transitions. [2020-08-19 01:50:31,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:50:31,250 INFO L276 IsEmpty]: Start isEmpty. Operand 870 states and 1022 transitions. [2020-08-19 01:50:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-08-19 01:50:31,253 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:50:31,253 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:50:31,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:50:31,253 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:50:31,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:50:31,254 INFO L82 PathProgramCache]: Analyzing trace with hash 59332245, now seen corresponding path program 3 times [2020-08-19 01:50:31,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:50:31,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209446417] [2020-08-19 01:50:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:50:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:50:31,351 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:50:31,351 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:50:31,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:50:31,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:50:31 BoogieIcfgContainer [2020-08-19 01:50:31,398 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:50:31,400 INFO L168 Benchmark]: Toolchain (without parser) took 48088.41 ms. Allocated memory was 140.5 MB in the beginning and 749.2 MB in the end (delta: 608.7 MB). Free memory was 102.7 MB in the beginning and 228.4 MB in the end (delta: -125.7 MB). Peak memory consumption was 483.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,400 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 623.86 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 169.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,402 INFO L168 Benchmark]: Boogie Preprocessor took 101.10 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 165.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,402 INFO L168 Benchmark]: RCFGBuilder took 1128.88 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 194.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,403 INFO L168 Benchmark]: TraceAbstraction took 46230.02 ms. Allocated memory was 235.9 MB in the beginning and 749.2 MB in the end (delta: 513.3 MB). Free memory was 194.2 MB in the beginning and 228.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 479.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:50:31,411 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 623.86 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.5 MB in the beginning and 169.8 MB in the end (delta: -67.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.10 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 165.4 MB in the end (delta: 4.4 MB). Peak memory consumption was 4.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1128.88 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 194.2 MB in the end (delta: -28.8 MB). Peak memory consumption was 79.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46230.02 ms. Allocated memory was 235.9 MB in the beginning and 749.2 MB in the end (delta: 513.3 MB). Free memory was 194.2 MB in the beginning and 228.4 MB in the end (delta: -34.2 MB). Peak memory consumption was 479.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 437]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L299] int cleanupTimeShifts = 4; [L611] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L809] int waterLevel = 1; [L810] int methaneLevelCritical = 0; [L375] int retValue_acc ; [L376] int tmp ; [L380] FCALL select_helpers() [L381] FCALL select_features() [L382] CALL, EXPR valid_product() [L424] int retValue_acc ; [L427] retValue_acc = 1 [L428] return (retValue_acc); [L382] RET, EXPR valid_product() [L382] tmp = valid_product() [L384] COND TRUE \read(tmp) [L386] FCALL setup() [L387] CALL runTest() [L366] CALL test() [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) [L68] CALL waterRise() [L827] COND TRUE waterLevel < 2 [L828] waterLevel = waterLevel + 1 [L68] RET waterRise() [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND FALSE !(\read(pumpRunning)) [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND TRUE ! pumpRunning [L165] CALL, EXPR isHighWaterLevel() [L257] int retValue_acc ; [L258] int tmp ; [L259] int tmp___0 ; [L263] CALL, EXPR isHighWaterSensorDry() [L889] int retValue_acc ; [L892] COND FALSE !(waterLevel < 2) [L896] retValue_acc = 0 [L897] return (retValue_acc); [L263] RET, EXPR isHighWaterSensorDry() [L263] tmp = isHighWaterSensorDry() [L265] COND FALSE !(\read(tmp)) [L268] tmp___0 = 1 [L270] retValue_acc = tmp___0 [L271] return (retValue_acc); [L165] RET, EXPR isHighWaterLevel() [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L169] CALL activatePump() [L188] pumpRunning = 1 [L169] RET activatePump() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND FALSE !(tmp == 0) [L146] RET __utac_acc__Specification4_spec__1() [L103] RET timeShift() [L56] COND TRUE 1 [L58] COND TRUE splverifierCounter < 4 [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND FALSE !(\read(tmp___2)) [L92] tmp___1 = __VERIFIER_nondet_int() [L94] COND FALSE !(\read(tmp___1)) [L103] CALL timeShift() [L131] COND TRUE \read(pumpRunning) [L133] CALL lowerWaterLevel() [L815] COND TRUE waterLevel > 0 [L816] waterLevel = waterLevel - 1 [L133] RET lowerWaterLevel() [L138] COND TRUE \read(systemActive) [L140] CALL processEnvironment() [L160] int tmp ; [L163] COND FALSE !(! pumpRunning) [L178] FCALL processEnvironment__wrappee__base() [L140] RET processEnvironment() [L146] CALL __utac_acc__Specification4_spec__1() [L904] int tmp ; [L905] int tmp___0 ; [L909] CALL, EXPR getWaterLevel() [L880] int retValue_acc ; [L883] retValue_acc = waterLevel [L884] return (retValue_acc); [L909] RET, EXPR getWaterLevel() [L909] tmp = getWaterLevel() [L911] COND TRUE tmp == 0 [L913] CALL, EXPR isPumpRunning() [L212] int retValue_acc ; [L215] retValue_acc = pumpRunning [L216] return (retValue_acc); [L913] RET, EXPR isPumpRunning() [L913] tmp___0 = isPumpRunning() [L915] COND TRUE \read(tmp___0) [L917] CALL __automaton_fail() [L437] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 39 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 46.1s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 38.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1364 SDtfs, 3563 SDslu, 1920 SDs, 0 SdLazy, 9438 SolverSat, 2704 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 547 GetRequests, 348 SyntacticMatches, 11 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 880 ImplicationChecksByTransitivity, 17.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1183occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 11 MinimizatonAttempts, 1585 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1151 NumberOfCodeBlocks, 1151 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 375157 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 224/262 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...