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_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:35:39,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:35:39,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:35:39,300 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:35:39,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:35:39,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:35:39,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:35:39,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:35:39,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:35:39,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:35:39,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:35:39,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:35:39,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:35:39,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:35:39,324 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:35:39,325 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:35:39,327 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:35:39,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:35:39,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:35:39,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:35:39,341 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:35:39,344 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:35:39,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:35:39,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:35:39,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:35:39,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:35:39,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:35:39,353 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:35:39,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:35:39,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:35:39,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:35:39,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:35:39,358 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:35:39,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:35:39,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:35:39,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:35:39,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:35:39,361 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:35:39,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:35:39,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:35:39,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:35:39,365 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 23:35:39,384 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:35:39,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:35:39,386 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:35:39,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:35:39,387 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:35:39,387 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:35:39,387 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:35:39,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:35:39,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:35:39,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:35:39,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:35:39,389 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:35:39,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:35:39,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:35:39,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:35:39,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:35:39,390 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:35:39,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:35:39,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:35:39,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:35:39,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:35:39,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:35:39,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:35:39,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:35:39,392 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:35:39,392 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:35:39,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:35:39,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:35:39,393 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:35:39,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:35:39,696 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:35:39,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:35:39,701 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:35:39,702 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:35:39,702 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-10-14 23:35:39,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd71b02a/d7425b95457a470cadaeea74aa9ae93a/FLAG05cc89727 [2019-10-14 23:35:40,272 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:35:40,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product51.cil.c [2019-10-14 23:35:40,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd71b02a/d7425b95457a470cadaeea74aa9ae93a/FLAG05cc89727 [2019-10-14 23:35:40,612 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cd71b02a/d7425b95457a470cadaeea74aa9ae93a [2019-10-14 23:35:40,625 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:35:40,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:35:40,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:40,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:35:40,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:35:40,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:40" (1/1) ... [2019-10-14 23:35:40,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@507cfa22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:40, skipping insertion in model container [2019-10-14 23:35:40,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:35:40" (1/1) ... [2019-10-14 23:35:40,642 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:35:40,700 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:35:41,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:41,255 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:35:41,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:35:41,369 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:35:41,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41 WrapperNode [2019-10-14 23:35:41,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:35:41,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:35:41,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:35:41,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:35:41,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,411 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,454 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,482 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (1/1) ... [2019-10-14 23:35:41,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:35:41,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:35:41,491 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:35:41,491 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:35:41,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (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 23:35:41,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:35:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:35:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:35:41,589 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:35:41,590 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:35:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:35:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:35:41,591 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:35:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:35:41,592 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:35:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:35:41,593 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:35:41,594 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:35:41,594 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-14 23:35:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:41,597 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:35:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:35:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:35:41,598 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:35:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:35:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:35:41,599 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:35:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:35:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:35:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:35:41,600 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:35:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:35:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:35:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:35:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:35:41,601 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:35:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:35:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:35:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:41,602 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:41,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:35:41,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:35:41,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:35:41,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:35:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:35:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:35:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:35:41,605 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:35:41,606 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:35:41,607 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:35:41,608 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-14 23:35:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:35:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:35:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:35:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:35:41,609 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:35:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:35:41,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:35:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:35:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-14 23:35:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:35:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:35:41,611 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:35:41,612 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:35:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:35:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:35:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:35:41,613 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:35:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:35:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:35:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:35:41,614 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:35:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:35:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:35:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:35:41,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:35:41,616 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:35:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:35:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:35:41,617 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:35:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:35:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:35:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:35:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:35:41,618 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:35:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:35:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:35:41,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:35:42,767 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:35:42,767 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:35:42,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:42 BoogieIcfgContainer [2019-10-14 23:35:42,769 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:35:42,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:35:42,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:35:42,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:35:42,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:35:40" (1/3) ... [2019-10-14 23:35:42,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d333136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:42, skipping insertion in model container [2019-10-14 23:35:42,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:35:41" (2/3) ... [2019-10-14 23:35:42,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d333136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:35:42, skipping insertion in model container [2019-10-14 23:35:42,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:35:42" (3/3) ... [2019-10-14 23:35:42,778 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product51.cil.c [2019-10-14 23:35:42,789 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:35:42,798 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:35:42,810 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:35:42,838 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:35:42,838 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:35:42,839 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:35:42,839 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:35:42,839 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:35:42,839 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:35:42,839 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:35:42,839 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:35:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states. [2019-10-14 23:35:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-14 23:35:42,875 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:42,876 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 23:35:42,878 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:42,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:42,884 INFO L82 PathProgramCache]: Analyzing trace with hash 2010639633, now seen corresponding path program 1 times [2019-10-14 23:35:42,893 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:42,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728246998] [2019-10-14 23:35:42,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,894 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:42,894 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,603 WARN L191 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:43,699 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 23:35:43,700 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728246998] [2019-10-14 23:35:43,701 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:43,702 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:35:43,702 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26802844] [2019-10-14 23:35:43,708 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:35:43,709 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:43,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:35:43,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:35:43,726 INFO L87 Difference]: Start difference. First operand 185 states. Second operand 4 states. [2019-10-14 23:35:44,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:44,906 INFO L93 Difference]: Finished difference Result 311 states and 406 transitions. [2019-10-14 23:35:44,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:35:44,909 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-14 23:35:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:44,930 INFO L225 Difference]: With dead ends: 311 [2019-10-14 23:35:44,931 INFO L226 Difference]: Without dead ends: 173 [2019-10-14 23:35:44,935 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 23:35:44,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-10-14 23:35:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 139. [2019-10-14 23:35:45,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-14 23:35:45,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 164 transitions. [2019-10-14 23:35:45,024 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 164 transitions. Word has length 51 [2019-10-14 23:35:45,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:45,025 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 164 transitions. [2019-10-14 23:35:45,025 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:35:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 164 transitions. [2019-10-14 23:35:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:35:45,029 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:45,029 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 23:35:45,030 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:45,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:45,030 INFO L82 PathProgramCache]: Analyzing trace with hash -119912956, now seen corresponding path program 1 times [2019-10-14 23:35:45,030 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:45,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129344830] [2019-10-14 23:35:45,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,031 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:45,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,427 WARN L191 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:45,502 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 23:35:45,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129344830] [2019-10-14 23:35:45,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:45,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:35:45,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837552328] [2019-10-14 23:35:45,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:35:45,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:45,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:35:45,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:35:45,506 INFO L87 Difference]: Start difference. First operand 139 states and 164 transitions. Second operand 5 states. [2019-10-14 23:35:46,021 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:47,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:47,018 INFO L93 Difference]: Finished difference Result 250 states and 309 transitions. [2019-10-14 23:35:47,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:35:47,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2019-10-14 23:35:47,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:47,028 INFO L225 Difference]: With dead ends: 250 [2019-10-14 23:35:47,032 INFO L226 Difference]: Without dead ends: 163 [2019-10-14 23:35:47,035 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 23:35:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2019-10-14 23:35:47,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 130. [2019-10-14 23:35:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-14 23:35:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 152 transitions. [2019-10-14 23:35:47,104 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 152 transitions. Word has length 52 [2019-10-14 23:35:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:47,104 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 152 transitions. [2019-10-14 23:35:47,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:35:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 152 transitions. [2019-10-14 23:35:47,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 23:35:47,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:47,116 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 23:35:47,117 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:47,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:47,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1399098738, now seen corresponding path program 1 times [2019-10-14 23:35:47,119 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:47,119 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502222467] [2019-10-14 23:35:47,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,119 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:47,119 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,543 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:47,656 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 23:35:47,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502222467] [2019-10-14 23:35:47,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:47,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:47,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604605224] [2019-10-14 23:35:47,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:47,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:47,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:47,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:47,659 INFO L87 Difference]: Start difference. First operand 130 states and 152 transitions. Second operand 9 states. [2019-10-14 23:35:48,157 WARN L191 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:48,520 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2019-10-14 23:35:48,809 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:49,099 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:49,987 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:35:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:51,961 INFO L93 Difference]: Finished difference Result 438 states and 552 transitions. [2019-10-14 23:35:51,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:35:51,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 56 [2019-10-14 23:35:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:51,969 INFO L225 Difference]: With dead ends: 438 [2019-10-14 23:35:51,969 INFO L226 Difference]: Without dead ends: 336 [2019-10-14 23:35:51,974 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 23:35:51,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-10-14 23:35:52,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 275. [2019-10-14 23:35:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-10-14 23:35:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 334 transitions. [2019-10-14 23:35:52,046 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 334 transitions. Word has length 56 [2019-10-14 23:35:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:52,047 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 334 transitions. [2019-10-14 23:35:52,047 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:52,047 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 334 transitions. [2019-10-14 23:35:52,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:35:52,049 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:52,049 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 23:35:52,049 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:52,050 INFO L82 PathProgramCache]: Analyzing trace with hash -1261702676, now seen corresponding path program 1 times [2019-10-14 23:35:52,050 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:52,050 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878218484] [2019-10-14 23:35:52,050 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,051 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:52,051 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,386 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:52,482 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 23:35:52,483 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878218484] [2019-10-14 23:35:52,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:52,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:35:52,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028734412] [2019-10-14 23:35:52,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:35:52,484 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:52,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:35:52,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:35:52,485 INFO L87 Difference]: Start difference. First operand 275 states and 334 transitions. Second operand 9 states. [2019-10-14 23:35:53,077 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:54,365 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:54,765 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:55,080 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:55,440 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:56,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:35:56,769 INFO L93 Difference]: Finished difference Result 875 states and 1153 transitions. [2019-10-14 23:35:56,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:35:56,770 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-10-14 23:35:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:35:56,779 INFO L225 Difference]: With dead ends: 875 [2019-10-14 23:35:56,780 INFO L226 Difference]: Without dead ends: 628 [2019-10-14 23:35:56,782 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:35:56,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-14 23:35:56,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 498. [2019-10-14 23:35:56,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 498 states. [2019-10-14 23:35:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 498 states to 498 states and 608 transitions. [2019-10-14 23:35:56,934 INFO L78 Accepts]: Start accepts. Automaton has 498 states and 608 transitions. Word has length 62 [2019-10-14 23:35:56,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:35:56,934 INFO L462 AbstractCegarLoop]: Abstraction has 498 states and 608 transitions. [2019-10-14 23:35:56,934 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:35:56,935 INFO L276 IsEmpty]: Start isEmpty. Operand 498 states and 608 transitions. [2019-10-14 23:35:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 23:35:56,937 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:35:56,937 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 23:35:56,938 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:35:56,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:35:56,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1700300984, now seen corresponding path program 1 times [2019-10-14 23:35:56,938 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:35:56,939 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136761570] [2019-10-14 23:35:56,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,939 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:35:56,939 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:35:56,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,290 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:35:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:35:57,383 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 23:35:57,384 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136761570] [2019-10-14 23:35:57,384 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:35:57,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:35:57,384 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825469895] [2019-10-14 23:35:57,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:35:57,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:35:57,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:35:57,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:35:57,386 INFO L87 Difference]: Start difference. First operand 498 states and 608 transitions. Second operand 10 states. [2019-10-14 23:35:58,006 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:35:59,155 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:59,504 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:35:59,787 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:00,405 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:01,834 INFO L93 Difference]: Finished difference Result 1379 states and 1882 transitions. [2019-10-14 23:36:01,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-14 23:36:01,840 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2019-10-14 23:36:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:01,847 INFO L225 Difference]: With dead ends: 1379 [2019-10-14 23:36:01,847 INFO L226 Difference]: Without dead ends: 909 [2019-10-14 23:36:01,850 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=205, Invalid=551, Unknown=0, NotChecked=0, Total=756 [2019-10-14 23:36:01,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2019-10-14 23:36:01,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 713. [2019-10-14 23:36:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 713 states. [2019-10-14 23:36:01,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 867 transitions. [2019-10-14 23:36:01,989 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 867 transitions. Word has length 66 [2019-10-14 23:36:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:01,989 INFO L462 AbstractCegarLoop]: Abstraction has 713 states and 867 transitions. [2019-10-14 23:36:01,989 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:01,989 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 867 transitions. [2019-10-14 23:36:01,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:01,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:01,992 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, 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 23:36:01,992 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:01,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:01,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1342584408, now seen corresponding path program 1 times [2019-10-14 23:36:01,993 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:01,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130479213] [2019-10-14 23:36:01,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:01,993 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:01,994 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:02,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,310 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:02,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:02,445 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 23:36:02,445 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130479213] [2019-10-14 23:36:02,445 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:02,445 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:36:02,446 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680523994] [2019-10-14 23:36:02,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:36:02,446 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:02,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:36:02,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:36:02,447 INFO L87 Difference]: Start difference. First operand 713 states and 867 transitions. Second operand 10 states. [2019-10-14 23:36:03,625 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:03,912 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2019-10-14 23:36:04,214 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:04,499 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:05,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:05,702 INFO L93 Difference]: Finished difference Result 1670 states and 2230 transitions. [2019-10-14 23:36:05,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:36:05,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2019-10-14 23:36:05,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:05,715 INFO L225 Difference]: With dead ends: 1670 [2019-10-14 23:36:05,715 INFO L226 Difference]: Without dead ends: 985 [2019-10-14 23:36:05,718 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:36:05,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 985 states. [2019-10-14 23:36:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 985 to 739. [2019-10-14 23:36:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2019-10-14 23:36:05,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 895 transitions. [2019-10-14 23:36:05,909 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 895 transitions. Word has length 88 [2019-10-14 23:36:05,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:05,910 INFO L462 AbstractCegarLoop]: Abstraction has 739 states and 895 transitions. [2019-10-14 23:36:05,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:36:05,910 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 895 transitions. [2019-10-14 23:36:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:05,914 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:05,915 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, 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 23:36:05,915 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash -640984534, now seen corresponding path program 1 times [2019-10-14 23:36:05,916 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:05,916 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878619165] [2019-10-14 23:36:05,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:05,916 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:05,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,202 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:06,343 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 23:36:06,344 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878619165] [2019-10-14 23:36:06,344 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:06,344 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:36:06,344 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024035525] [2019-10-14 23:36:06,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:36:06,345 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:06,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:36:06,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:36:06,346 INFO L87 Difference]: Start difference. First operand 739 states and 895 transitions. Second operand 12 states. [2019-10-14 23:36:07,147 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:36:07,419 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:07,681 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:08,526 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:08,840 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:09,110 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:36:10,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:10,616 INFO L93 Difference]: Finished difference Result 1724 states and 2339 transitions. [2019-10-14 23:36:10,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-14 23:36:10,616 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 88 [2019-10-14 23:36:10,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:10,631 INFO L225 Difference]: With dead ends: 1724 [2019-10-14 23:36:10,631 INFO L226 Difference]: Without dead ends: 1013 [2019-10-14 23:36:10,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 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 23:36:10,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2019-10-14 23:36:10,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 755. [2019-10-14 23:36:10,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 755 states. [2019-10-14 23:36:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 911 transitions. [2019-10-14 23:36:10,860 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 911 transitions. Word has length 88 [2019-10-14 23:36:10,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:10,861 INFO L462 AbstractCegarLoop]: Abstraction has 755 states and 911 transitions. [2019-10-14 23:36:10,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:36:10,861 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 911 transitions. [2019-10-14 23:36:10,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-10-14 23:36:10,864 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:10,865 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, 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 23:36:10,865 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:10,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1084496363, now seen corresponding path program 1 times [2019-10-14 23:36:10,865 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:10,866 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141124001] [2019-10-14 23:36:10,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:10,867 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:10,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,211 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:11,375 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 23:36:11,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141124001] [2019-10-14 23:36:11,376 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:11,376 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:11,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098558013] [2019-10-14 23:36:11,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:11,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:11,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:11,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:11,377 INFO L87 Difference]: Start difference. First operand 755 states and 911 transitions. Second operand 8 states. [2019-10-14 23:36:12,018 WARN L191 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:12,649 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:36:15,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:36:15,503 INFO L93 Difference]: Finished difference Result 2626 states and 3597 transitions. [2019-10-14 23:36:15,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-14 23:36:15,503 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 88 [2019-10-14 23:36:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:36:15,517 INFO L225 Difference]: With dead ends: 2626 [2019-10-14 23:36:15,517 INFO L226 Difference]: Without dead ends: 1899 [2019-10-14 23:36:15,521 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2019-10-14 23:36:15,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2019-10-14 23:36:15,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1555. [2019-10-14 23:36:15,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1555 states. [2019-10-14 23:36:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 1901 transitions. [2019-10-14 23:36:15,850 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 1901 transitions. Word has length 88 [2019-10-14 23:36:15,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:36:15,850 INFO L462 AbstractCegarLoop]: Abstraction has 1555 states and 1901 transitions. [2019-10-14 23:36:15,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:36:15,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 1901 transitions. [2019-10-14 23:36:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-14 23:36:15,853 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:36:15,853 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, 1, 1, 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 23:36:15,854 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:36:15,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:36:15,854 INFO L82 PathProgramCache]: Analyzing trace with hash 269339525, now seen corresponding path program 1 times [2019-10-14 23:36:15,855 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:36:15,855 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056681296] [2019-10-14 23:36:15,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,855 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:36:15,855 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:36:15,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,125 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:36:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:36:16,235 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 23:36:16,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056681296] [2019-10-14 23:36:16,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:36:16,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:36:16,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649629377] [2019-10-14 23:36:16,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:36:16,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:36:16,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:36:16,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:36:16,239 INFO L87 Difference]: Start difference. First operand 1555 states and 1901 transitions. Second operand 8 states. [2019-10-14 23:36:16,785 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189