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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:36:18,975 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:36:18,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:36:18,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:36:18,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:36:18,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:36:19,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:36:19,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:36:19,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:36:19,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:36:19,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:36:19,023 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:36:19,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:36:19,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:36:19,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:36:19,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:36:19,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:36:19,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:36:19,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:36:19,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:36:19,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:36:19,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:36:19,049 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:36:19,050 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:36:19,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:36:19,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:36:19,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:36:19,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:36:19,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:36:19,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:36:19,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:36:19,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:36:19,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:36:19,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:36:19,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:36:19,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:36:19,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:36:19,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:36:19,062 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:36:19,063 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:36:19,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:36:19,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:36:19,103 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:36:19,104 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:36:19,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:36:19,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:36:19,106 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:36:19,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:36:19,110 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:36:19,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:36:19,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:36:19,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:36:19,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:36:19,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:36:19,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:36:19,111 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:36:19,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:36:19,111 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:36:19,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:36:19,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:36:19,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:36:19,115 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:36:19,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:36:19,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:36:19,116 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:36:19,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:36:19,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:36:19,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:36:19,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:36:19,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:36:19,117 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:36:19,414 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:36:19,435 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:36:19,440 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:36:19,442 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:36:19,442 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:36:19,443 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-14 23:36:19,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2469e5fc0/2758c1278fc3448db66afcaa4aae55dd/FLAG904da74a7 [2019-10-14 23:36:20,106 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:36:20,107 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product63.cil.c [2019-10-14 23:36:20,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2469e5fc0/2758c1278fc3448db66afcaa4aae55dd/FLAG904da74a7 [2019-10-14 23:36:20,340 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2469e5fc0/2758c1278fc3448db66afcaa4aae55dd [2019-10-14 23:36:20,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:36:20,353 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:36:20,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:20,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:36:20,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:36:20,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:20" (1/1) ... [2019-10-14 23:36:20,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46029d64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:20, skipping insertion in model container [2019-10-14 23:36:20,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:36:20" (1/1) ... [2019-10-14 23:36:20,371 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:36:20,420 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:36:20,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:21,010 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:36:21,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:36:21,199 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:36:21,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21 WrapperNode [2019-10-14 23:36:21,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:36:21,201 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:36:21,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:36:21,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:36:21,217 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... [2019-10-14 23:36:21,361 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:36:21,362 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:36:21,362 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:36:21,362 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:36:21,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-10-14 23:36:21,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:36:21,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:36:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:36:21,425 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:36:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:36:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:36:21,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:36:21,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:36:21,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:21,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:21,427 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:36:21,428 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:36:21,428 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:36:21,429 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:36:21,429 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:36:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:36:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:36:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:36:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:36:21,431 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:36:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:36:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:36:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:36:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:36:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:36:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:36:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:36:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:36:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:36:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:36:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:36:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:36:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:36:21,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:36:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:36:21,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:36:22,573 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:36:22,574 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:36:22,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:22 BoogieIcfgContainer [2019-10-14 23:36:22,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:36:22,577 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:36:22,577 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:36:22,580 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:36:22,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:36:20" (1/3) ... [2019-10-14 23:36:22,581 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc47043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:22, skipping insertion in model container [2019-10-14 23:36:22,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:36:21" (2/3) ... [2019-10-14 23:36:22,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc47043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:36:22, skipping insertion in model container [2019-10-14 23:36:22,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:36:22" (3/3) ... [2019-10-14 23:36:22,584 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product63.cil.c [2019-10-14 23:36:22,594 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:36:22,602 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:36:22,614 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:36:22,641 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:36:22,641 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:36:22,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:36:22,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:36:22,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:36:22,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:36:22,642 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:36:22,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:36:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states. [2019-10-14 23:36:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:36:22,676 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:22,677 INFO L380 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] [2019-10-14 23:36:22,679 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:22,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1165852340, now seen corresponding path program 1 times [2019-10-14 23:36:22,694 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:22,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177768011] [2019-10-14 23:36:22,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,695 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:22,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,355 WARN L191 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:23,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:23,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:23,465 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177768011] [2019-10-14 23:36:23,466 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:23,467 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:36:23,467 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943571629] [2019-10-14 23:36:23,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:36:23,473 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:23,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:36:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:23,491 INFO L87 Difference]: Start difference. First operand 204 states. Second operand 4 states. [2019-10-14 23:36:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:24,925 INFO L93 Difference]: Finished difference Result 359 states and 469 transitions. [2019-10-14 23:36:24,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:36:24,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:36:24,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:24,943 INFO L225 Difference]: With dead ends: 359 [2019-10-14 23:36:24,944 INFO L226 Difference]: Without dead ends: 199 [2019-10-14 23:36:24,949 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:36:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-10-14 23:36:25,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 161. [2019-10-14 23:36:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2019-10-14 23:36:25,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 193 transitions. [2019-10-14 23:36:25,050 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 193 transitions. Word has length 51 [2019-10-14 23:36:25,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:25,051 INFO L462 AbstractCegarLoop]: Abstraction has 161 states and 193 transitions. [2019-10-14 23:36:25,051 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:36:25,051 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 193 transitions. [2019-10-14 23:36:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:36:25,055 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:25,055 INFO L380 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] [2019-10-14 23:36:25,056 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:25,056 INFO L82 PathProgramCache]: Analyzing trace with hash -558328651, now seen corresponding path program 1 times [2019-10-14 23:36:25,056 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:25,057 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480446476] [2019-10-14 23:36:25,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,057 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:25,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,388 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:25,461 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480446476] [2019-10-14 23:36:25,461 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:25,462 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:36:25,462 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252320250] [2019-10-14 23:36:25,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:36:25,464 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:25,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:36:25,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:36:25,465 INFO L87 Difference]: Start difference. First operand 161 states and 193 transitions. Second operand 5 states. [2019-10-14 23:36:26,041 WARN L191 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:27,168 INFO L93 Difference]: Finished difference Result 298 states and 372 transitions. [2019-10-14 23:36:27,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:36:27,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:36:27,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:27,173 INFO L225 Difference]: With dead ends: 298 [2019-10-14 23:36:27,173 INFO L226 Difference]: Without dead ends: 189 [2019-10-14 23:36:27,175 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:36:27,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2019-10-14 23:36:27,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 152. [2019-10-14 23:36:27,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2019-10-14 23:36:27,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2019-10-14 23:36:27,220 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 52 [2019-10-14 23:36:27,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:27,220 INFO L462 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2019-10-14 23:36:27,220 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:36:27,220 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2019-10-14 23:36:27,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:36:27,223 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:27,223 INFO L380 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] [2019-10-14 23:36:27,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:27,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:27,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2137633786, now seen corresponding path program 1 times [2019-10-14 23:36:27,224 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:27,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177612369] [2019-10-14 23:36:27,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:27,225 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:27,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:27,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,604 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:27,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:27,690 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177612369] [2019-10-14 23:36:27,690 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:27,690 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:27,690 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727163575] [2019-10-14 23:36:27,691 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:27,691 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:27,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:27,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:27,692 INFO L87 Difference]: Start difference. First operand 152 states and 181 transitions. Second operand 9 states. [2019-10-14 23:36:28,162 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:28,521 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:28,801 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,066 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:29,965 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:32,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:32,571 INFO L93 Difference]: Finished difference Result 512 states and 649 transitions. [2019-10-14 23:36:32,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:32,571 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:36:32,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:32,576 INFO L225 Difference]: With dead ends: 512 [2019-10-14 23:36:32,576 INFO L226 Difference]: Without dead ends: 388 [2019-10-14 23:36:32,578 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:36:32,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2019-10-14 23:36:32,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 319. [2019-10-14 23:36:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2019-10-14 23:36:32,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 392 transitions. [2019-10-14 23:36:32,658 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 392 transitions. Word has length 56 [2019-10-14 23:36:32,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:32,659 INFO L462 AbstractCegarLoop]: Abstraction has 319 states and 392 transitions. [2019-10-14 23:36:32,659 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:32,659 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 392 transitions. [2019-10-14 23:36:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:36:32,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:32,662 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:32,662 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:32,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:32,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1129081232, now seen corresponding path program 1 times [2019-10-14 23:36:32,662 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:32,663 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585835378] [2019-10-14 23:36:32,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:32,663 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:32,663 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:32,993 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:33,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:33,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585835378] [2019-10-14 23:36:33,122 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:33,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:36:33,122 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886269227] [2019-10-14 23:36:33,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:36:33,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:33,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:36:33,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:36:33,124 INFO L87 Difference]: Start difference. First operand 319 states and 392 transitions. Second operand 9 states. [2019-10-14 23:36:33,556 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:34,632 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,160 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:35,521 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:35,818 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:37,859 INFO L93 Difference]: Finished difference Result 1023 states and 1347 transitions. [2019-10-14 23:36:37,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:36:37,860 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:36:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:37,866 INFO L225 Difference]: With dead ends: 1023 [2019-10-14 23:36:37,867 INFO L226 Difference]: Without dead ends: 732 [2019-10-14 23:36:37,869 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:36:37,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2019-10-14 23:36:38,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 586. [2019-10-14 23:36:38,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 586 states. [2019-10-14 23:36:38,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 586 states to 586 states and 724 transitions. [2019-10-14 23:36:38,015 INFO L78 Accepts]: Start accepts. Automaton has 586 states and 724 transitions. Word has length 62 [2019-10-14 23:36:38,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:38,015 INFO L462 AbstractCegarLoop]: Abstraction has 586 states and 724 transitions. [2019-10-14 23:36:38,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:36:38,016 INFO L276 IsEmpty]: Start isEmpty. Operand 586 states and 724 transitions. [2019-10-14 23:36:38,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:36:38,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:38,019 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:38,020 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:38,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:38,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1112141772, now seen corresponding path program 1 times [2019-10-14 23:36:38,020 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:38,021 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474026959] [2019-10-14 23:36:38,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,021 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:38,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,356 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:38,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:36:38,486 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474026959] [2019-10-14 23:36:38,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:38,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:38,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164844600] [2019-10-14 23:36:38,487 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:38,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:38,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:38,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:38,488 INFO L87 Difference]: Start difference. First operand 586 states and 724 transitions. Second operand 10 states. [2019-10-14 23:36:38,997 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:40,111 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:40,421 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:40,706 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:41,602 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:43,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:43,110 INFO L93 Difference]: Finished difference Result 1615 states and 2190 transitions. [2019-10-14 23:36:43,110 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:36:43,110 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:36:43,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:43,121 INFO L225 Difference]: With dead ends: 1615 [2019-10-14 23:36:43,122 INFO L226 Difference]: Without dead ends: 1057 [2019-10-14 23:36:43,125 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-10-14 23:36:43,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 861. [2019-10-14 23:36:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 861 states. [2019-10-14 23:36:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1047 transitions. [2019-10-14 23:36:43,335 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1047 transitions. Word has length 66 [2019-10-14 23:36:43,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:43,336 INFO L462 AbstractCegarLoop]: Abstraction has 861 states and 1047 transitions. [2019-10-14 23:36:43,336 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1047 transitions. [2019-10-14 23:36:43,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 23:36:43,340 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:43,340 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:43,340 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:43,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:43,341 INFO L82 PathProgramCache]: Analyzing trace with hash 831572138, now seen corresponding path program 1 times [2019-10-14 23:36:43,341 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:43,341 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306705643] [2019-10-14 23:36:43,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,342 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:43,342 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,620 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:43,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:43,801 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306705643] [2019-10-14 23:36:43,801 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:43,802 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:43,802 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733519881] [2019-10-14 23:36:43,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:43,803 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:43,803 INFO L87 Difference]: Start difference. First operand 861 states and 1047 transitions. Second operand 12 states. [2019-10-14 23:36:44,487 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:44,763 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:45,039 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:45,964 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:46,255 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:46,545 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:48,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:48,108 INFO L93 Difference]: Finished difference Result 1974 states and 2667 transitions. [2019-10-14 23:36:48,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:48,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 108 [2019-10-14 23:36:48,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:48,120 INFO L225 Difference]: With dead ends: 1974 [2019-10-14 23:36:48,121 INFO L226 Difference]: Without dead ends: 1141 [2019-10-14 23:36:48,124 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:36:48,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2019-10-14 23:36:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 883. [2019-10-14 23:36:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 883 states. [2019-10-14 23:36:48,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1071 transitions. [2019-10-14 23:36:48,313 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1071 transitions. Word has length 108 [2019-10-14 23:36:48,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:48,314 INFO L462 AbstractCegarLoop]: Abstraction has 883 states and 1071 transitions. [2019-10-14 23:36:48,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1071 transitions. [2019-10-14 23:36:48,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 23:36:48,323 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:48,323 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:48,324 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:48,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:48,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1107589908, now seen corresponding path program 1 times [2019-10-14 23:36:48,324 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:48,324 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427680820] [2019-10-14 23:36:48,325 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,325 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:48,325 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:48,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,622 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:48,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:48,782 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427680820] [2019-10-14 23:36:48,782 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:48,783 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:48,783 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300011055] [2019-10-14 23:36:48,784 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:48,784 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:48,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:48,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:48,785 INFO L87 Difference]: Start difference. First operand 883 states and 1071 transitions. Second operand 10 states. [2019-10-14 23:36:50,388 WARN L191 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:50,753 WARN L191 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:51,061 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:51,347 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:52,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:52,815 INFO L93 Difference]: Finished difference Result 2012 states and 2707 transitions. [2019-10-14 23:36:52,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:52,816 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2019-10-14 23:36:52,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:52,829 INFO L225 Difference]: With dead ends: 2012 [2019-10-14 23:36:52,829 INFO L226 Difference]: Without dead ends: 1157 [2019-10-14 23:36:52,833 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-14 23:36:52,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 903. [2019-10-14 23:36:52,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2019-10-14 23:36:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1091 transitions. [2019-10-14 23:36:53,000 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1091 transitions. Word has length 108 [2019-10-14 23:36:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:53,000 INFO L462 AbstractCegarLoop]: Abstraction has 903 states and 1091 transitions. [2019-10-14 23:36:53,001 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1091 transitions. [2019-10-14 23:36:53,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2019-10-14 23:36:53,003 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:53,003 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:36:53,004 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:53,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:53,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1600742153, now seen corresponding path program 1 times [2019-10-14 23:36:53,004 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:53,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505641653] [2019-10-14 23:36:53,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:53,005 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:53,005 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,333 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:53,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:53,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:36:53,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505641653] [2019-10-14 23:36:53,514 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:53,514 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:53,515 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789541629] [2019-10-14 23:36:53,515 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:53,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:53,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:53,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:53,516 INFO L87 Difference]: Start difference. First operand 903 states and 1091 transitions. Second operand 8 states. [2019-10-14 23:36:54,087 WARN L191 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:54,713 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189