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_spec4_product62.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:39:18,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:39:18,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:39:18,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:39:18,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:39:18,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:39:18,592 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:39:18,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:39:18,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:39:18,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:39:18,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:39:18,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:39:18,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:39:18,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:39:18,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:39:18,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:39:18,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:39:18,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:39:18,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:39:18,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:39:18,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:39:18,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:39:18,636 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:39:18,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:39:18,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:39:18,639 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:39:18,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:39:18,640 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:39:18,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:39:18,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:39:18,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:39:18,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:39:18,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:39:18,644 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:39:18,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:39:18,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:39:18,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:39:18,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:39:18,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:39:18,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:39:18,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:39:18,648 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 23:39:18,662 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:39:18,662 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:39:18,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:39:18,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:39:18,663 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:39:18,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:39:18,664 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:39:18,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:39:18,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:39:18,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:39:18,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:39:18,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:39:18,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:39:18,665 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:39:18,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:39:18,666 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:39:18,666 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:39:18,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:39:18,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:39:18,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:39:18,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:39:18,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:39:18,667 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:39:18,667 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:39:18,667 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:39:18,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:39:18,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:39:18,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:39:18,668 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:39:18,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:39:18,966 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:39:18,971 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:39:18,972 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:39:18,973 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:39:18,974 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-14 23:39:19,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe91e54dc/4795ecf306b149e9ba4aa08eaea3cfff/FLAG588856c1f [2019-10-14 23:39:19,611 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:39:19,612 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product62.cil.c [2019-10-14 23:39:19,631 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe91e54dc/4795ecf306b149e9ba4aa08eaea3cfff/FLAG588856c1f [2019-10-14 23:39:19,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe91e54dc/4795ecf306b149e9ba4aa08eaea3cfff [2019-10-14 23:39:19,918 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:39:19,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:39:19,921 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:19,921 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:39:19,924 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:39:19,925 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:19" (1/1) ... [2019-10-14 23:39:19,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d73c94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:19, skipping insertion in model container [2019-10-14 23:39:19,928 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:39:19" (1/1) ... [2019-10-14 23:39:19,935 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:39:19,987 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:39:20,438 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:20,452 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:39:20,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:39:20,585 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:39:20,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20 WrapperNode [2019-10-14 23:39:20,585 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:39:20,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:39:20,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:39:20,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:39:20,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (1/1) ... [2019-10-14 23:39:20,678 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:39:20,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:39:20,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:39:20,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:39:20,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (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 23:39:20,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:39:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:39:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-14 23:39:20,752 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-14 23:39:20,753 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-14 23:39:20,753 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-14 23:39:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-14 23:39:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:20,754 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-14 23:39:20,755 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-14 23:39:20,755 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-14 23:39:20,756 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-14 23:39:20,756 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-14 23:39:20,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-14 23:39:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-14 23:39:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-14 23:39:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-14 23:39:20,759 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-14 23:39:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-14 23:39:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-14 23:39:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-14 23:39:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-14 23:39:20,760 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:20,761 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-14 23:39:20,762 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-14 23:39:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-14 23:39:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-14 23:39:20,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-14 23:39:20,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-14 23:39:20,764 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-14 23:39:20,765 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-14 23:39:20,766 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-14 23:39:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-14 23:39:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-14 23:39:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-14 23:39:20,767 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-14 23:39:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-14 23:39:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-14 23:39:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:39:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-14 23:39:20,768 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-14 23:39:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-14 23:39:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-14 23:39:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-14 23:39:20,769 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-14 23:39:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-14 23:39:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-14 23:39:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:39:20,770 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-14 23:39:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:39:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:39:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-14 23:39:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:39:20,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:39:20,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:39:20,772 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:39:20,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-14 23:39:20,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:39:20,773 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-14 23:39:20,773 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-14 23:39:20,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:39:20,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:39:21,998 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:39:21,998 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-14 23:39:22,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:21 BoogieIcfgContainer [2019-10-14 23:39:22,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:39:22,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:39:22,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:39:22,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:39:22,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:39:19" (1/3) ... [2019-10-14 23:39:22,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f124bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:22, skipping insertion in model container [2019-10-14 23:39:22,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:39:20" (2/3) ... [2019-10-14 23:39:22,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f124bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:39:22, skipping insertion in model container [2019-10-14 23:39:22,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:39:21" (3/3) ... [2019-10-14 23:39:22,012 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product62.cil.c [2019-10-14 23:39:22,023 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:39:22,034 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:39:22,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:39:22,083 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:39:22,083 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:39:22,084 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:39:22,084 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:39:22,084 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:39:22,085 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:39:22,085 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:39:22,085 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:39:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states. [2019-10-14 23:39:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-14 23:39:22,124 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:22,125 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 23:39:22,130 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:22,136 INFO L82 PathProgramCache]: Analyzing trace with hash 182694304, now seen corresponding path program 1 times [2019-10-14 23:39:22,146 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:22,146 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219953023] [2019-10-14 23:39:22,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:22,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:22,147 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:22,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,820 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:22,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:22,938 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 23:39:22,939 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219953023] [2019-10-14 23:39:22,940 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:22,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-14 23:39:22,941 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740084808] [2019-10-14 23:39:22,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:39:22,948 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:22,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:39:22,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:39:22,966 INFO L87 Difference]: Start difference. First operand 200 states. Second operand 3 states. [2019-10-14 23:39:24,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:24,415 INFO L93 Difference]: Finished difference Result 360 states and 465 transitions. [2019-10-14 23:39:24,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:39:24,417 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-10-14 23:39:24,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:24,432 INFO L225 Difference]: With dead ends: 360 [2019-10-14 23:39:24,433 INFO L226 Difference]: Without dead ends: 194 [2019-10-14 23:39:24,438 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 23:39:24,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-14 23:39:24,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2019-10-14 23:39:24,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2019-10-14 23:39:24,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 185 transitions. [2019-10-14 23:39:24,604 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 185 transitions. Word has length 46 [2019-10-14 23:39:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:24,605 INFO L462 AbstractCegarLoop]: Abstraction has 157 states and 185 transitions. [2019-10-14 23:39:24,605 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:39:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 185 transitions. [2019-10-14 23:39:24,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-14 23:39:24,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:24,617 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 23:39:24,617 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:24,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1720628684, now seen corresponding path program 1 times [2019-10-14 23:39:24,619 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:24,619 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110177700] [2019-10-14 23:39:24,619 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:24,620 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:24,620 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:24,989 WARN L191 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:25,023 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 23:39:25,024 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110177700] [2019-10-14 23:39:25,024 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:25,024 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:39:25,025 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229054294] [2019-10-14 23:39:25,027 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:39:25,027 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:25,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:39:25,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:39:25,028 INFO L87 Difference]: Start difference. First operand 157 states and 185 transitions. Second operand 4 states. [2019-10-14 23:39:25,568 WARN L191 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:26,679 INFO L93 Difference]: Finished difference Result 289 states and 352 transitions. [2019-10-14 23:39:26,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:26,680 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 47 [2019-10-14 23:39:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:26,683 INFO L225 Difference]: With dead ends: 289 [2019-10-14 23:39:26,683 INFO L226 Difference]: Without dead ends: 178 [2019-10-14 23:39:26,685 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 23:39:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-14 23:39:26,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2019-10-14 23:39:26,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-14 23:39:26,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 173 transitions. [2019-10-14 23:39:26,729 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 173 transitions. Word has length 47 [2019-10-14 23:39:26,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:26,729 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 173 transitions. [2019-10-14 23:39:26,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:39:26,729 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 173 transitions. [2019-10-14 23:39:26,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 23:39:26,731 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:26,732 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 23:39:26,732 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:26,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1588538268, now seen corresponding path program 1 times [2019-10-14 23:39:26,732 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:26,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064380938] [2019-10-14 23:39:26,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,733 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:26,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,045 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:27,141 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 23:39:27,141 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064380938] [2019-10-14 23:39:27,141 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:27,142 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:39:27,142 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459960981] [2019-10-14 23:39:27,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:27,143 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:27,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:27,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:39:27,143 INFO L87 Difference]: Start difference. First operand 148 states and 173 transitions. Second operand 8 states. [2019-10-14 23:39:27,580 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:27,965 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:28,230 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:28,497 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:30,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:30,104 INFO L93 Difference]: Finished difference Result 302 states and 370 transitions. [2019-10-14 23:39:30,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:39:30,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2019-10-14 23:39:30,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:30,107 INFO L225 Difference]: With dead ends: 302 [2019-10-14 23:39:30,107 INFO L226 Difference]: Without dead ends: 178 [2019-10-14 23:39:30,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:30,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2019-10-14 23:39:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 148. [2019-10-14 23:39:30,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-14 23:39:30,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2019-10-14 23:39:30,145 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 52 [2019-10-14 23:39:30,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:30,146 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2019-10-14 23:39:30,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:30,146 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2019-10-14 23:39:30,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-10-14 23:39:30,147 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:30,147 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] [2019-10-14 23:39:30,148 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:30,148 INFO L82 PathProgramCache]: Analyzing trace with hash 265767055, now seen corresponding path program 1 times [2019-10-14 23:39:30,148 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:30,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248763930] [2019-10-14 23:39:30,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:30,149 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:30,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,443 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:30,556 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 23:39:30,556 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248763930] [2019-10-14 23:39:30,557 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:30,557 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:39:30,558 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916792141] [2019-10-14 23:39:30,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:30,558 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:30,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:30,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:39:30,560 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 6 states. [2019-10-14 23:39:30,908 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:32,255 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:33,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:33,117 INFO L93 Difference]: Finished difference Result 413 states and 506 transitions. [2019-10-14 23:39:33,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:39:33,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2019-10-14 23:39:33,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:33,121 INFO L225 Difference]: With dead ends: 413 [2019-10-14 23:39:33,121 INFO L226 Difference]: Without dead ends: 289 [2019-10-14 23:39:33,122 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:33,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2019-10-14 23:39:33,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 246. [2019-10-14 23:39:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2019-10-14 23:39:33,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 276 transitions. [2019-10-14 23:39:33,171 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 276 transitions. Word has length 70 [2019-10-14 23:39:33,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:33,172 INFO L462 AbstractCegarLoop]: Abstraction has 246 states and 276 transitions. [2019-10-14 23:39:33,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:33,172 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 276 transitions. [2019-10-14 23:39:33,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-14 23:39:33,173 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:33,173 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] [2019-10-14 23:39:33,174 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:33,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:33,174 INFO L82 PathProgramCache]: Analyzing trace with hash 990610989, now seen corresponding path program 1 times [2019-10-14 23:39:33,174 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:33,175 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018343697] [2019-10-14 23:39:33,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:33,175 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:33,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,527 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:33,656 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 23:39:33,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018343697] [2019-10-14 23:39:33,657 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:39:33,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 23:39:33,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549199433] [2019-10-14 23:39:33,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 23:39:33,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:33,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 23:39:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:39:33,659 INFO L87 Difference]: Start difference. First operand 246 states and 276 transitions. Second operand 12 states. [2019-10-14 23:39:34,267 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:34,668 WARN L191 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:34,932 WARN L191 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:35,186 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:35,857 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 23:39:37,149 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:37,523 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:37,817 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:38,133 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:38,518 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:38,808 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:40,518 WARN L191 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2019-10-14 23:39:40,941 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:42,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:42,020 INFO L93 Difference]: Finished difference Result 866 states and 1086 transitions. [2019-10-14 23:39:42,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-14 23:39:42,021 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 84 [2019-10-14 23:39:42,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:42,026 INFO L225 Difference]: With dead ends: 866 [2019-10-14 23:39:42,027 INFO L226 Difference]: Without dead ends: 644 [2019-10-14 23:39:42,028 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=547, Unknown=0, NotChecked=0, Total=702 [2019-10-14 23:39:42,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-10-14 23:39:42,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 582. [2019-10-14 23:39:42,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2019-10-14 23:39:42,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 672 transitions. [2019-10-14 23:39:42,166 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 672 transitions. Word has length 84 [2019-10-14 23:39:42,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:42,167 INFO L462 AbstractCegarLoop]: Abstraction has 582 states and 672 transitions. [2019-10-14 23:39:42,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 23:39:42,167 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 672 transitions. [2019-10-14 23:39:42,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:39:42,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:42,171 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:39:42,171 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:42,172 INFO L82 PathProgramCache]: Analyzing trace with hash -1224194793, now seen corresponding path program 1 times [2019-10-14 23:39:42,172 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:42,172 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911001054] [2019-10-14 23:39:42,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:42,173 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:42,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,487 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-14 23:39:42,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911001054] [2019-10-14 23:39:42,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186482010] [2019-10-14 23:39:42,761 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 23:39:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:42,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 881 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:39:43,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:43,316 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:43,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:43,317 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2019-10-14 23:39:43,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227574121] [2019-10-14 23:39:43,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:39:43,319 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:43,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:39:43,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:39:43,319 INFO L87 Difference]: Start difference. First operand 582 states and 672 transitions. Second operand 8 states. [2019-10-14 23:39:45,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:45,044 INFO L93 Difference]: Finished difference Result 1470 states and 1866 transitions. [2019-10-14 23:39:45,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:39:45,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 148 [2019-10-14 23:39:45,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:45,051 INFO L225 Difference]: With dead ends: 1470 [2019-10-14 23:39:45,052 INFO L226 Difference]: Without dead ends: 1044 [2019-10-14 23:39:45,054 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:39:45,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1044 states. [2019-10-14 23:39:45,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1044 to 960. [2019-10-14 23:39:45,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2019-10-14 23:39:45,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1155 transitions. [2019-10-14 23:39:45,229 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1155 transitions. Word has length 148 [2019-10-14 23:39:45,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:45,230 INFO L462 AbstractCegarLoop]: Abstraction has 960 states and 1155 transitions. [2019-10-14 23:39:45,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:39:45,230 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1155 transitions. [2019-10-14 23:39:45,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:39:45,232 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:45,233 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:39:45,440 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:45,441 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:45,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:45,442 INFO L82 PathProgramCache]: Analyzing trace with hash 2008036261, now seen corresponding path program 1 times [2019-10-14 23:39:45,442 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:45,442 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853775750] [2019-10-14 23:39:45,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:45,443 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:45,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,754 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:45,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:45,980 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:39:45,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853775750] [2019-10-14 23:39:45,981 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133789227] [2019-10-14 23:39:45,981 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:46,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 887 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:46,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:46,301 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:46,302 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:46,302 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 10 [2019-10-14 23:39:46,302 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855607830] [2019-10-14 23:39:46,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:39:46,304 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:46,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:39:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:39:46,305 INFO L87 Difference]: Start difference. First operand 960 states and 1155 transitions. Second operand 6 states. [2019-10-14 23:39:46,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:46,514 INFO L93 Difference]: Finished difference Result 1924 states and 2406 transitions. [2019-10-14 23:39:46,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:39:46,515 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2019-10-14 23:39:46,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:46,526 INFO L225 Difference]: With dead ends: 1924 [2019-10-14 23:39:46,526 INFO L226 Difference]: Without dead ends: 988 [2019-10-14 23:39:46,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:39:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2019-10-14 23:39:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 980. [2019-10-14 23:39:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 980 states. [2019-10-14 23:39:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1179 transitions. [2019-10-14 23:39:46,700 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1179 transitions. Word has length 148 [2019-10-14 23:39:46,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:46,700 INFO L462 AbstractCegarLoop]: Abstraction has 980 states and 1179 transitions. [2019-10-14 23:39:46,700 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:39:46,700 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1179 transitions. [2019-10-14 23:39:46,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-14 23:39:46,703 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:46,703 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:39:46,909 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:46,910 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:46,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:46,910 INFO L82 PathProgramCache]: Analyzing trace with hash -935545817, now seen corresponding path program 1 times [2019-10-14 23:39:46,910 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:46,911 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42382320] [2019-10-14 23:39:46,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,911 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:46,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,264 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:47,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-14 23:39:47,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42382320] [2019-10-14 23:39:47,501 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747970787] [2019-10-14 23:39:47,502 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:47,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:39:47,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-14 23:39:47,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:39:47,810 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2019-10-14 23:39:47,810 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122687465] [2019-10-14 23:39:47,810 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:39:47,811 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:47,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:39:47,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:47,811 INFO L87 Difference]: Start difference. First operand 980 states and 1179 transitions. Second operand 5 states. [2019-10-14 23:39:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:39:47,988 INFO L93 Difference]: Finished difference Result 1746 states and 2150 transitions. [2019-10-14 23:39:47,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:39:47,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2019-10-14 23:39:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:39:47,994 INFO L225 Difference]: With dead ends: 1746 [2019-10-14 23:39:47,995 INFO L226 Difference]: Without dead ends: 790 [2019-10-14 23:39:47,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:39:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2019-10-14 23:39:48,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 790. [2019-10-14 23:39:48,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 790 states. [2019-10-14 23:39:48,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 941 transitions. [2019-10-14 23:39:48,137 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 941 transitions. Word has length 148 [2019-10-14 23:39:48,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:39:48,138 INFO L462 AbstractCegarLoop]: Abstraction has 790 states and 941 transitions. [2019-10-14 23:39:48,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:39:48,138 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 941 transitions. [2019-10-14 23:39:48,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:39:48,140 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:39:48,141 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-14 23:39:48,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:48,346 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:39:48,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:39:48,347 INFO L82 PathProgramCache]: Analyzing trace with hash 2041878082, now seen corresponding path program 1 times [2019-10-14 23:39:48,347 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:39:48,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904257748] [2019-10-14 23:39:48,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:48,348 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:39:48,348 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:39:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,770 WARN L191 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2019-10-14 23:39:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,028 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-10-14 23:39:49,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904257748] [2019-10-14 23:39:49,029 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953651041] [2019-10-14 23:39:49,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:39:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:39:49,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 897 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-14 23:39:49,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:39:49,527 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 15 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:39:49,528 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:39:49,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2019-10-14 23:39:49,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979965718] [2019-10-14 23:39:49,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-10-14 23:39:49,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:39:49,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-10-14 23:39:49,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=405, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:39:49,533 INFO L87 Difference]: Start difference. First operand 790 states and 941 transitions. Second operand 22 states. [2019-10-14 23:39:50,456 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:51,372 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2019-10-14 23:39:51,714 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:52,312 WARN L191 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 23:39:54,251 WARN L191 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:54,680 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:54,974 WARN L191 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:55,297 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:55,605 WARN L191 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:55,936 WARN L191 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:56,317 WARN L191 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 23:39:56,612 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:56,919 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2019-10-14 23:39:57,242 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 191