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_spec1_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:33:47,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:33:47,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:33:47,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:33:47,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:33:47,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:33:47,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:33:47,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:33:47,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:33:47,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:33:47,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:33:47,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:33:47,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:33:47,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:33:47,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:33:47,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:33:47,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:33:47,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:33:47,303 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:33:47,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:33:47,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:33:47,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:33:47,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:33:47,315 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:33:47,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:33:47,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:33:47,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:33:47,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:33:47,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:33:47,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:33:47,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:33:47,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:33:47,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:33:47,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:33:47,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:33:47,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:33:47,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:33:47,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:33:47,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:33:47,325 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:33:47,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:33:47,327 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 23:33:47,341 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:33:47,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:33:47,342 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:33:47,342 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:33:47,343 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:33:47,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:33:47,343 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:33:47,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:33:47,343 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:33:47,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:33:47,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:33:47,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:33:47,344 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:33:47,344 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:33:47,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:33:47,345 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:33:47,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:33:47,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:33:47,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:33:47,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:33:47,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:33:47,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:33:47,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:33:47,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:33:47,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:33:47,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:33:47,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:33:47,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:33:47,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:33:47,648 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:33:47,670 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:33:47,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:33:47,676 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:33:47,676 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:33:47,677 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2019-10-14 23:33:47,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f01db6/5acc2ccec74a4bf59295d765382ff5f1/FLAG8930c8308 [2019-10-14 23:33:48,291 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:33:48,292 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec1_product47.cil.c [2019-10-14 23:33:48,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f01db6/5acc2ccec74a4bf59295d765382ff5f1/FLAG8930c8308 [2019-10-14 23:33:48,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/950f01db6/5acc2ccec74a4bf59295d765382ff5f1 [2019-10-14 23:33:48,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:33:48,614 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:33:48,615 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:48,615 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:33:48,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:33:48,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:48" (1/1) ... [2019-10-14 23:33:48,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e53d70d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:48, skipping insertion in model container [2019-10-14 23:33:48,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:33:48" (1/1) ... [2019-10-14 23:33:48,630 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:33:48,690 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:33:49,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:49,185 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:33:49,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:33:49,345 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:33:49,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49 WrapperNode [2019-10-14 23:33:49,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:33:49,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:33:49,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:33:49,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:33:49,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,378 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,422 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (1/1) ... [2019-10-14 23:33:49,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:33:49,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:33:49,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:33:49,431 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:33:49,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (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 23:33:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:33:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:33:49,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:49,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:49,512 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:33:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:33:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:33:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:33:49,513 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:33:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:33:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:33:49,514 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:33:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:33:49,515 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:33:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:33:49,516 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:33:49,518 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:33:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:33:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:33:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:33:49,519 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:33:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:33:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:33:49,520 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:33:49,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:33:49,522 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:33:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:33:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:33:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:33:49,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:33:49,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:33:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:33:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:33:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:33:49,524 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1 [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:33:49,525 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:33:49,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:33:49,527 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:33:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:33:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:33:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:33:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:33:49,528 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-14 23:33:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:33:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:33:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:33:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:33:49,529 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:33:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:33:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:33:49,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:33:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:33:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:33:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:33:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:33:49,531 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:33:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:33:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:33:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:33:49,532 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:33:49,533 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:33:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:33:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:33:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:33:49,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:33:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:33:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:33:49,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:33:50,737 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:33:50,737 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:33:50,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:50 BoogieIcfgContainer [2019-10-14 23:33:50,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:33:50,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:33:50,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:33:50,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:33:50,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:33:48" (1/3) ... [2019-10-14 23:33:50,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f97998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:50, skipping insertion in model container [2019-10-14 23:33:50,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:33:49" (2/3) ... [2019-10-14 23:33:50,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56f97998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:33:50, skipping insertion in model container [2019-10-14 23:33:50,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:33:50" (3/3) ... [2019-10-14 23:33:50,748 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product47.cil.c [2019-10-14 23:33:50,758 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:33:50,767 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:33:50,779 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:33:50,807 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:33:50,808 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:33:50,808 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:33:50,808 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:33:50,809 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:33:50,809 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:33:50,809 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:33:50,809 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:33:50,834 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states. [2019-10-14 23:33:50,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:33:50,845 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:50,846 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] [2019-10-14 23:33:50,848 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:50,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:50,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1070296044, now seen corresponding path program 1 times [2019-10-14 23:33:50,864 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:50,864 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853392587] [2019-10-14 23:33:50,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:50,865 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:50,865 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:51,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,597 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:51,703 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 23:33:51,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853392587] [2019-10-14 23:33:51,705 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:51,705 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:33:51,705 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425261678] [2019-10-14 23:33:51,711 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:33:51,711 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:51,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:33:51,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:33:51,729 INFO L87 Difference]: Start difference. First operand 179 states. Second operand 3 states. [2019-10-14 23:33:53,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:53,049 INFO L93 Difference]: Finished difference Result 317 states and 417 transitions. [2019-10-14 23:33:53,050 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:33:53,051 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:33:53,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:53,066 INFO L225 Difference]: With dead ends: 317 [2019-10-14 23:33:53,066 INFO L226 Difference]: Without dead ends: 172 [2019-10-14 23:33:53,071 INFO L600 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 [2019-10-14 23:33:53,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-14 23:33:53,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 136. [2019-10-14 23:33:53,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-14 23:33:53,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 162 transitions. [2019-10-14 23:33:53,202 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 162 transitions. Word has length 46 [2019-10-14 23:33:53,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:53,203 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 162 transitions. [2019-10-14 23:33:53,204 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:33:53,204 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 162 transitions. [2019-10-14 23:33:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:33:53,215 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:53,216 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] [2019-10-14 23:33:53,216 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:53,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:53,217 INFO L82 PathProgramCache]: Analyzing trace with hash 689119196, now seen corresponding path program 1 times [2019-10-14 23:33:53,217 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:53,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874397443] [2019-10-14 23:33:53,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:53,218 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:53,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,624 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:53,661 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 23:33:53,662 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874397443] [2019-10-14 23:33:53,662 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:53,662 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:33:53,663 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966840065] [2019-10-14 23:33:53,664 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:33:53,665 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:53,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:33:53,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:33:53,665 INFO L87 Difference]: Start difference. First operand 136 states and 162 transitions. Second operand 4 states. [2019-10-14 23:33:54,133 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:33:55,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:55,037 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2019-10-14 23:33:55,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:33:55,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:33:55,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:55,041 INFO L225 Difference]: With dead ends: 244 [2019-10-14 23:33:55,041 INFO L226 Difference]: Without dead ends: 156 [2019-10-14 23:33:55,043 INFO L600 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 [2019-10-14 23:33:55,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-10-14 23:33:55,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 127. [2019-10-14 23:33:55,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-14 23:33:55,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 150 transitions. [2019-10-14 23:33:55,086 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 150 transitions. Word has length 47 [2019-10-14 23:33:55,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:55,086 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 150 transitions. [2019-10-14 23:33:55,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:33:55,087 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 150 transitions. [2019-10-14 23:33:55,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:33:55,088 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:55,089 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 23:33:55,089 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1659347680, now seen corresponding path program 1 times [2019-10-14 23:33:55,090 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:55,090 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609803978] [2019-10-14 23:33:55,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:55,090 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:55,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,450 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:33:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:33:55,552 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 23:33:55,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609803978] [2019-10-14 23:33:55,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:33:55,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:33:55,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606121590] [2019-10-14 23:33:55,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:33:55,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:33:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:33:55,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:33:55,555 INFO L87 Difference]: Start difference. First operand 127 states and 150 transitions. Second operand 8 states. [2019-10-14 23:33:56,082 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:33:56,434 WARN L191 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:33:56,709 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:33:56,985 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:33:57,798 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:33:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:33:59,847 INFO L93 Difference]: Finished difference Result 437 states and 546 transitions. [2019-10-14 23:33:59,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:33:59,848 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2019-10-14 23:33:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:33:59,854 INFO L225 Difference]: With dead ends: 437 [2019-10-14 23:33:59,854 INFO L226 Difference]: Without dead ends: 334 [2019-10-14 23:33:59,855 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:33:59,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2019-10-14 23:33:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 272. [2019-10-14 23:33:59,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2019-10-14 23:33:59,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 332 transitions. [2019-10-14 23:33:59,925 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 332 transitions. Word has length 51 [2019-10-14 23:33:59,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:33:59,926 INFO L462 AbstractCegarLoop]: Abstraction has 272 states and 332 transitions. [2019-10-14 23:33:59,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:33:59,926 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 332 transitions. [2019-10-14 23:33:59,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-14 23:33:59,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:33:59,928 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] [2019-10-14 23:33:59,928 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:33:59,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:33:59,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2103406603, now seen corresponding path program 1 times [2019-10-14 23:33:59,929 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:33:59,929 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512074703] [2019-10-14 23:33:59,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,929 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:33:59,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:33:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,257 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:00,376 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 23:34:00,376 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512074703] [2019-10-14 23:34:00,377 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:00,377 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:34:00,377 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325982273] [2019-10-14 23:34:00,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:00,378 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:00,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:00,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:34:00,379 INFO L87 Difference]: Start difference. First operand 272 states and 332 transitions. Second operand 8 states. [2019-10-14 23:34:00,862 WARN L191 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:01,843 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:02,255 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:02,607 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:02,945 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:03,415 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:04,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:04,552 INFO L93 Difference]: Finished difference Result 882 states and 1149 transitions. [2019-10-14 23:34:04,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:04,552 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 57 [2019-10-14 23:34:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:04,559 INFO L225 Difference]: With dead ends: 882 [2019-10-14 23:34:04,559 INFO L226 Difference]: Without dead ends: 634 [2019-10-14 23:34:04,561 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:34:04,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2019-10-14 23:34:04,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 499. [2019-10-14 23:34:04,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 499 states. [2019-10-14 23:34:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 614 transitions. [2019-10-14 23:34:04,683 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 614 transitions. Word has length 57 [2019-10-14 23:34:04,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:04,683 INFO L462 AbstractCegarLoop]: Abstraction has 499 states and 614 transitions. [2019-10-14 23:34:04,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 614 transitions. [2019-10-14 23:34:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-14 23:34:04,686 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:04,686 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] [2019-10-14 23:34:04,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:04,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:04,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1216252231, now seen corresponding path program 1 times [2019-10-14 23:34:04,687 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:04,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113759899] [2019-10-14 23:34:04,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:04,688 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:04,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,017 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:05,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:05,105 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 23:34:05,105 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113759899] [2019-10-14 23:34:05,105 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:05,106 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:05,106 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970562014] [2019-10-14 23:34:05,107 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:05,108 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:05,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:05,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:05,109 INFO L87 Difference]: Start difference. First operand 499 states and 614 transitions. Second operand 9 states. [2019-10-14 23:34:05,641 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:06,653 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:06,951 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:07,231 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:07,958 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:08,277 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:09,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:09,316 INFO L93 Difference]: Finished difference Result 1415 states and 1900 transitions. [2019-10-14 23:34:09,317 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:34:09,317 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2019-10-14 23:34:09,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:09,324 INFO L225 Difference]: With dead ends: 1415 [2019-10-14 23:34:09,324 INFO L226 Difference]: Without dead ends: 940 [2019-10-14 23:34:09,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2019-10-14 23:34:09,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 940 states. [2019-10-14 23:34:09,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 940 to 759. [2019-10-14 23:34:09,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2019-10-14 23:34:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 935 transitions. [2019-10-14 23:34:09,508 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 935 transitions. Word has length 61 [2019-10-14 23:34:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:09,508 INFO L462 AbstractCegarLoop]: Abstraction has 759 states and 935 transitions. [2019-10-14 23:34:09,509 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 935 transitions. [2019-10-14 23:34:09,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:09,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:09,512 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] [2019-10-14 23:34:09,512 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:09,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1403376364, now seen corresponding path program 1 times [2019-10-14 23:34:09,513 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:09,513 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259588747] [2019-10-14 23:34:09,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:09,513 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:09,513 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:09,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,816 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:10,022 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 23:34:10,023 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259588747] [2019-10-14 23:34:10,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:10,025 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:10,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877287105] [2019-10-14 23:34:10,026 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:10,026 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:10,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:10,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:10,027 INFO L87 Difference]: Start difference. First operand 759 states and 935 transitions. Second operand 9 states. [2019-10-14 23:34:10,705 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:34:11,764 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:12,068 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:34:12,383 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:12,665 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:14,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:14,549 INFO L93 Difference]: Finished difference Result 2506 states and 3515 transitions. [2019-10-14 23:34:14,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:34:14,549 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-14 23:34:14,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:14,564 INFO L225 Difference]: With dead ends: 2506 [2019-10-14 23:34:14,564 INFO L226 Difference]: Without dead ends: 1771 [2019-10-14 23:34:14,568 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2019-10-14 23:34:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1371. [2019-10-14 23:34:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2019-10-14 23:34:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1674 transitions. [2019-10-14 23:34:14,875 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1674 transitions. Word has length 98 [2019-10-14 23:34:14,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:14,876 INFO L462 AbstractCegarLoop]: Abstraction has 1371 states and 1674 transitions. [2019-10-14 23:34:14,876 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:14,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1674 transitions. [2019-10-14 23:34:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:14,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:14,881 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] [2019-10-14 23:34:14,881 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1411135723, now seen corresponding path program 1 times [2019-10-14 23:34:14,882 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:14,882 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994786164] [2019-10-14 23:34:14,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:14,882 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:14,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,143 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:15,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:15,280 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 23:34:15,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994786164] [2019-10-14 23:34:15,281 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:15,281 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:34:15,281 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308443068] [2019-10-14 23:34:15,282 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:34:15,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:15,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:34:15,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:34:15,283 INFO L87 Difference]: Start difference. First operand 1371 states and 1674 transitions. Second operand 9 states. [2019-10-14 23:34:16,475 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:16,751 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:34:17,038 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:17,312 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:18,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:18,675 INFO L93 Difference]: Finished difference Result 3134 states and 4213 transitions. [2019-10-14 23:34:18,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:34:18,676 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 98 [2019-10-14 23:34:18,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:18,688 INFO L225 Difference]: With dead ends: 3134 [2019-10-14 23:34:18,688 INFO L226 Difference]: Without dead ends: 1787 [2019-10-14 23:34:18,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:34:18,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2019-10-14 23:34:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1411. [2019-10-14 23:34:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1411 states. [2019-10-14 23:34:18,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1714 transitions. [2019-10-14 23:34:18,947 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1714 transitions. Word has length 98 [2019-10-14 23:34:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:18,947 INFO L462 AbstractCegarLoop]: Abstraction has 1411 states and 1714 transitions. [2019-10-14 23:34:18,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:34:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1714 transitions. [2019-10-14 23:34:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2019-10-14 23:34:18,951 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:18,952 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] [2019-10-14 23:34:18,952 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:18,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:18,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1990345235, now seen corresponding path program 1 times [2019-10-14 23:34:18,953 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:18,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366676385] [2019-10-14 23:34:18,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:18,953 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:18,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,200 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:19,355 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 23:34:19,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366676385] [2019-10-14 23:34:19,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:34:19,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:34:19,358 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109248769] [2019-10-14 23:34:19,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:34:19,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:19,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:34:19,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:34:19,360 INFO L87 Difference]: Start difference. First operand 1411 states and 1714 transitions. Second operand 11 states. [2019-10-14 23:34:20,079 WARN L191 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:34:20,344 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:20,594 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:21,389 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:21,705 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:22,005 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:34:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:23,397 INFO L93 Difference]: Finished difference Result 2760 states and 3605 transitions. [2019-10-14 23:34:23,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-14 23:34:23,398 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2019-10-14 23:34:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:23,407 INFO L225 Difference]: With dead ends: 2760 [2019-10-14 23:34:23,407 INFO L226 Difference]: Without dead ends: 1373 [2019-10-14 23:34:23,413 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:34:23,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2019-10-14 23:34:23,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1129. [2019-10-14 23:34:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1129 states. [2019-10-14 23:34:23,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1129 states to 1129 states and 1346 transitions. [2019-10-14 23:34:23,727 INFO L78 Accepts]: Start accepts. Automaton has 1129 states and 1346 transitions. Word has length 98 [2019-10-14 23:34:23,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:23,728 INFO L462 AbstractCegarLoop]: Abstraction has 1129 states and 1346 transitions. [2019-10-14 23:34:23,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:34:23,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1129 states and 1346 transitions. [2019-10-14 23:34:23,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-14 23:34:23,734 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:23,735 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] [2019-10-14 23:34:23,735 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:34:23,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:34:23,736 INFO L82 PathProgramCache]: Analyzing trace with hash 860662504, now seen corresponding path program 1 times [2019-10-14 23:34:23,736 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:34:23,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125755673] [2019-10-14 23:34:23,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:23,738 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:34:23,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:34:23,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,058 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:34:24,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,313 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:34:24,316 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125755673] [2019-10-14 23:34:24,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247123026] [2019-10-14 23:34:24,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:34:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:34:24,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:34:24,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:34:24,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:34:24,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:34:24,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [17] total 22 [2019-10-14 23:34:24,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709657113] [2019-10-14 23:34:24,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:34:24,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:34:24,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:34:24,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:24,830 INFO L87 Difference]: Start difference. First operand 1129 states and 1346 transitions. Second operand 8 states. [2019-10-14 23:34:25,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:34:25,297 INFO L93 Difference]: Finished difference Result 2208 states and 2648 transitions. [2019-10-14 23:34:25,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:34:25,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 102 [2019-10-14 23:34:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:34:25,305 INFO L225 Difference]: With dead ends: 2208 [2019-10-14 23:34:25,305 INFO L226 Difference]: Without dead ends: 1103 [2019-10-14 23:34:25,309 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:34:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2019-10-14 23:34:25,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 1103. [2019-10-14 23:34:25,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2019-10-14 23:34:25,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1291 transitions. [2019-10-14 23:34:25,667 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1291 transitions. Word has length 102 [2019-10-14 23:34:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:34:25,669 INFO L462 AbstractCegarLoop]: Abstraction has 1103 states and 1291 transitions. [2019-10-14 23:34:25,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:34:25,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1291 transitions. [2019-10-14 23:34:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 23:34:25,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:34:25,675 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]