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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:20:38,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:20:38,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:20:38,622 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:20:38,623 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:20:38,624 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:20:38,625 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:20:38,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:20:38,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:20:38,629 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:20:38,630 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:20:38,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:20:38,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:20:38,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:20:38,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:20:38,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:20:38,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:20:38,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:20:38,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:20:38,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:20:38,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:20:38,642 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:20:38,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:20:38,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:20:38,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:20:38,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:20:38,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:20:38,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:20:38,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:20:38,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:20:38,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:20:38,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:20:38,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:20:38,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:20:38,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:20:38,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:20:38,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:20:38,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:20:38,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:20:38,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:20:38,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:20:38,655 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 [2019-10-15 03:20:38,670 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:20:38,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:20:38,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:20:38,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:20:38,672 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:20:38,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:20:38,672 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:20:38,672 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:20:38,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:20:38,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:20:38,673 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:20:38,673 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:20:38,673 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:20:38,673 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:20:38,674 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:20:38,674 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:20:38,674 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:20:38,674 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:20:38,675 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:20:38,675 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:20:38,675 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:20:38,675 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:20:38,675 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:20:38,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:20:38,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:20:38,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:20:38,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:20:38,676 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:20:38,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:20:38,953 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:20:38,971 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:20:38,975 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:20:38,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:20:38,977 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:20:38,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-15 03:20:39,051 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7506e2cdb/35039d6f17a8464ca81b126b12d439ab/FLAG727f16eee [2019-10-15 03:20:39,654 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:20:39,655 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product64.cil.c [2019-10-15 03:20:39,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7506e2cdb/35039d6f17a8464ca81b126b12d439ab/FLAG727f16eee [2019-10-15 03:20:39,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7506e2cdb/35039d6f17a8464ca81b126b12d439ab [2019-10-15 03:20:39,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:20:39,912 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:20:39,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:39,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:20:39,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:20:39,920 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:39" (1/1) ... [2019-10-15 03:20:39,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626b4f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:39, skipping insertion in model container [2019-10-15 03:20:39,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:20:39" (1/1) ... [2019-10-15 03:20:39,933 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:20:39,992 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:20:40,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:40,450 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:20:40,555 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:20:40,593 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:20:40,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40 WrapperNode [2019-10-15 03:20:40,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:20:40,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:20:40,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:20:40,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:20:40,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (1/1) ... [2019-10-15 03:20:40,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:20:40,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:20:40,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:20:40,699 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:20:40,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (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 [2019-10-15 03:20:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:20:40,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:20:40,762 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:20:40,763 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:20:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:40,765 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:20:40,766 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:20:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:20:40,768 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:20:40,769 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:20:40,770 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:20:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:20:40,772 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:20:40,773 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:20:40,774 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:20:40,775 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:20:40,776 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:20:40,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:20:42,460 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:20:42,461 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:20:42,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:42 BoogieIcfgContainer [2019-10-15 03:20:42,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:20:42,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:20:42,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:20:42,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:20:42,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:20:39" (1/3) ... [2019-10-15 03:20:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af1abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:42, skipping insertion in model container [2019-10-15 03:20:42,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:20:40" (2/3) ... [2019-10-15 03:20:42,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af1abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:20:42, skipping insertion in model container [2019-10-15 03:20:42,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:20:42" (3/3) ... [2019-10-15 03:20:42,472 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product64.cil.c [2019-10-15 03:20:42,482 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:20:42,491 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:20:42,503 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:20:42,532 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:20:42,532 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:20:42,532 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:20:42,532 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:20:42,533 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:20:42,533 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:20:42,533 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:20:42,533 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:20:42,558 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2019-10-15 03:20:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-15 03:20:42,568 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:42,569 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] [2019-10-15 03:20:42,572 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:42,578 INFO L82 PathProgramCache]: Analyzing trace with hash 283778306, now seen corresponding path program 1 times [2019-10-15 03:20:42,588 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:42,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071718438] [2019-10-15 03:20:42,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:42,590 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:42,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:43,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:43,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071718438] [2019-10-15 03:20:43,015 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:43,016 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:20:43,016 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351131966] [2019-10-15 03:20:43,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:20:43,021 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:43,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:20:43,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:43,038 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 2 states. [2019-10-15 03:20:43,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:43,084 INFO L93 Difference]: Finished difference Result 278 states and 343 transitions. [2019-10-15 03:20:43,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:20:43,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-15 03:20:43,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:43,100 INFO L225 Difference]: With dead ends: 278 [2019-10-15 03:20:43,100 INFO L226 Difference]: Without dead ends: 141 [2019-10-15 03:20:43,105 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:20:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-10-15 03:20:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-10-15 03:20:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-15 03:20:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 167 transitions. [2019-10-15 03:20:43,170 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 167 transitions. Word has length 46 [2019-10-15 03:20:43,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:43,171 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 167 transitions. [2019-10-15 03:20:43,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:20:43,171 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 167 transitions. [2019-10-15 03:20:43,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-15 03:20:43,176 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:43,176 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] [2019-10-15 03:20:43,176 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:43,177 INFO L82 PathProgramCache]: Analyzing trace with hash 1231722357, now seen corresponding path program 1 times [2019-10-15 03:20:43,177 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:43,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652371110] [2019-10-15 03:20:43,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:43,178 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:43,178 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:43,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:43,317 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652371110] [2019-10-15 03:20:43,317 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:43,318 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:20:43,318 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78428331] [2019-10-15 03:20:43,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:43,322 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:43,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:43,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:43,324 INFO L87 Difference]: Start difference. First operand 141 states and 167 transitions. Second operand 3 states. [2019-10-15 03:20:43,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:43,384 INFO L93 Difference]: Finished difference Result 226 states and 268 transitions. [2019-10-15 03:20:43,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:43,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-15 03:20:43,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:43,392 INFO L225 Difference]: With dead ends: 226 [2019-10-15 03:20:43,392 INFO L226 Difference]: Without dead ends: 133 [2019-10-15 03:20:43,394 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:20:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2019-10-15 03:20:43,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2019-10-15 03:20:43,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2019-10-15 03:20:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 156 transitions. [2019-10-15 03:20:43,436 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 156 transitions. Word has length 47 [2019-10-15 03:20:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:43,437 INFO L462 AbstractCegarLoop]: Abstraction has 133 states and 156 transitions. [2019-10-15 03:20:43,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:43,437 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 156 transitions. [2019-10-15 03:20:43,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-15 03:20:43,444 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:43,444 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] [2019-10-15 03:20:43,444 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:43,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:43,445 INFO L82 PathProgramCache]: Analyzing trace with hash -1222362210, now seen corresponding path program 1 times [2019-10-15 03:20:43,445 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:43,445 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808980593] [2019-10-15 03:20:43,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:43,446 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:43,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:43,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:43,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808980593] [2019-10-15 03:20:43,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:43,668 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:43,668 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457346020] [2019-10-15 03:20:43,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:43,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:43,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:43,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:43,671 INFO L87 Difference]: Start difference. First operand 133 states and 156 transitions. Second operand 7 states. [2019-10-15 03:20:44,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:44,224 INFO L93 Difference]: Finished difference Result 395 states and 480 transitions. [2019-10-15 03:20:44,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:20:44,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2019-10-15 03:20:44,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:44,236 INFO L225 Difference]: With dead ends: 395 [2019-10-15 03:20:44,237 INFO L226 Difference]: Without dead ends: 287 [2019-10-15 03:20:44,239 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:20:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2019-10-15 03:20:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 275. [2019-10-15 03:20:44,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-10-15 03:20:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 333 transitions. [2019-10-15 03:20:44,308 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 333 transitions. Word has length 51 [2019-10-15 03:20:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:44,308 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 333 transitions. [2019-10-15 03:20:44,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 333 transitions. [2019-10-15 03:20:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-10-15 03:20:44,317 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:44,317 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] [2019-10-15 03:20:44,318 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:44,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:44,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1675445681, now seen corresponding path program 1 times [2019-10-15 03:20:44,319 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:44,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777017404] [2019-10-15 03:20:44,320 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:44,321 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:44,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:44,506 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777017404] [2019-10-15 03:20:44,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:44,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 03:20:44,507 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567681037] [2019-10-15 03:20:44,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 03:20:44,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:44,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 03:20:44,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:20:44,509 INFO L87 Difference]: Start difference. First operand 275 states and 333 transitions. Second operand 6 states. [2019-10-15 03:20:44,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:44,772 INFO L93 Difference]: Finished difference Result 757 states and 936 transitions. [2019-10-15 03:20:44,773 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:20:44,773 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-10-15 03:20:44,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:44,778 INFO L225 Difference]: With dead ends: 757 [2019-10-15 03:20:44,778 INFO L226 Difference]: Without dead ends: 507 [2019-10-15 03:20:44,779 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:20:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2019-10-15 03:20:44,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 495. [2019-10-15 03:20:44,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 495 states. [2019-10-15 03:20:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 603 transitions. [2019-10-15 03:20:44,856 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 603 transitions. Word has length 55 [2019-10-15 03:20:44,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:44,857 INFO L462 AbstractCegarLoop]: Abstraction has 495 states and 603 transitions. [2019-10-15 03:20:44,857 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 03:20:44,857 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 603 transitions. [2019-10-15 03:20:44,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-15 03:20:44,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:44,860 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] [2019-10-15 03:20:44,860 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:44,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:44,860 INFO L82 PathProgramCache]: Analyzing trace with hash 923417440, now seen corresponding path program 1 times [2019-10-15 03:20:44,861 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:44,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154878741] [2019-10-15 03:20:44,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:44,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:44,861 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:44,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:20:44,974 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154878741] [2019-10-15 03:20:44,974 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:20:44,974 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:20:44,975 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117908645] [2019-10-15 03:20:44,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:20:44,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:44,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:20:44,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:20:44,976 INFO L87 Difference]: Start difference. First operand 495 states and 603 transitions. Second operand 7 states. [2019-10-15 03:20:45,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:45,654 INFO L93 Difference]: Finished difference Result 1315 states and 1722 transitions. [2019-10-15 03:20:45,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:20:45,655 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 58 [2019-10-15 03:20:45,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:45,661 INFO L225 Difference]: With dead ends: 1315 [2019-10-15 03:20:45,662 INFO L226 Difference]: Without dead ends: 845 [2019-10-15 03:20:45,664 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:20:45,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2019-10-15 03:20:45,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 756. [2019-10-15 03:20:45,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 756 states. [2019-10-15 03:20:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 756 states to 756 states and 908 transitions. [2019-10-15 03:20:45,766 INFO L78 Accepts]: Start accepts. Automaton has 756 states and 908 transitions. Word has length 58 [2019-10-15 03:20:45,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:45,767 INFO L462 AbstractCegarLoop]: Abstraction has 756 states and 908 transitions. [2019-10-15 03:20:45,767 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:20:45,767 INFO L276 IsEmpty]: Start isEmpty. Operand 756 states and 908 transitions. [2019-10-15 03:20:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2019-10-15 03:20:45,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:45,772 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:20:45,772 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:45,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:45,773 INFO L82 PathProgramCache]: Analyzing trace with hash 383580701, now seen corresponding path program 1 times [2019-10-15 03:20:45,773 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:45,773 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355365836] [2019-10-15 03:20:45,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:45,774 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:45,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:46,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:20:46,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355365836] [2019-10-15 03:20:46,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717827684] [2019-10-15 03:20:46,037 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 [2019-10-15 03:20:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:46,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:20:46,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:46,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:46,341 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:20:46,539 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:20:46,539 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-15 03:20:46,540 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149774585] [2019-10-15 03:20:46,540 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:20:46,541 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:20:46,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:20:46,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:46,541 INFO L87 Difference]: Start difference. First operand 756 states and 908 transitions. Second operand 3 states. [2019-10-15 03:20:46,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:20:46,611 INFO L93 Difference]: Finished difference Result 1077 states and 1320 transitions. [2019-10-15 03:20:46,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:20:46,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2019-10-15 03:20:46,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:20:46,620 INFO L225 Difference]: With dead ends: 1077 [2019-10-15 03:20:46,620 INFO L226 Difference]: Without dead ends: 1074 [2019-10-15 03:20:46,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-15 03:20:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2019-10-15 03:20:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1046. [2019-10-15 03:20:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2019-10-15 03:20:46,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1283 transitions. [2019-10-15 03:20:46,730 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1283 transitions. Word has length 94 [2019-10-15 03:20:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:20:46,731 INFO L462 AbstractCegarLoop]: Abstraction has 1046 states and 1283 transitions. [2019-10-15 03:20:46,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:20:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1283 transitions. [2019-10-15 03:20:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-15 03:20:46,737 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:20:46,737 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:20:46,951 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:20:46,951 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:20:46,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:20:46,952 INFO L82 PathProgramCache]: Analyzing trace with hash 1300883013, now seen corresponding path program 1 times [2019-10-15 03:20:46,953 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:20:46,953 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023602917] [2019-10-15 03:20:46,953 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:46,954 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:20:46,954 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:20:46,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 21 proven. 19 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:20:47,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023602917] [2019-10-15 03:20:47,149 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69493843] [2019-10-15 03:20:47,149 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 [2019-10-15 03:20:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:20:47,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1039 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 03:20:47,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:20:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 03:20:47,564 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:20:47,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:47,856 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:47,904 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:47,912 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:20:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 03:20:48,144 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [37466991] [2019-10-15 03:20:48,174 INFO L162 IcfgInterpreter]: Started Sifa with 114 locations of interest [2019-10-15 03:20:48,174 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:20:48,181 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:20:48,189 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:20:48,190 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:20:59,032 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:21:00,905 WARN L191 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:21:01,065 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:21:01,205 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:21:01,381 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:21:01,855 WARN L191 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:02,118 WARN L191 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:02,353 WARN L191 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:02,627 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,035 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:21:03,234 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,512 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,668 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,795 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,930 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:21:03,941 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:21:04,223 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 548 for LOIs [2019-10-15 03:21:04,334 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:04,458 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:04,597 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:04,730 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:04,872 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:05,079 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:05,206 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:05,317 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:05,448 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:05,687 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 548 [2019-10-15 03:21:05,923 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:06,049 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:06,154 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:06,314 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:06,417 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:06,520 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:06,651 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:07,009 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:07,332 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:07,541 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:07,666 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:07,806 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:08,025 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:08,339 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:08,540 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 548 [2019-10-15 03:21:08,676 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:08,991 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,129 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,240 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,384 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,521 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,657 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,786 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:09,896 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:10,008 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:10,130 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:10,299 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:10,415 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:10,543 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:10,777 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:10,892 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:11,027 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:11,236 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:11,349 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:11,470 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:11,619 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:21:11,751 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:21:11,909 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:21:12,029 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,153 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,283 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,428 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,545 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,698 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:12,932 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-15 03:21:13,050 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:13,181 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:13,300 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:13,416 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:13,544 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:21:13,679 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:13,790 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:13,924 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,063 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,176 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,299 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,414 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,526 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,656 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:14,881 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:14,996 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,126 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,258 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,380 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,516 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,736 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:15,852 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:15,977 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:16,187 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 566 [2019-10-15 03:21:16,309 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:21:16,448 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:16,682 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 568 [2019-10-15 03:21:16,799 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:16,937 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:21:17,064 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,199 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,337 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,452 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,570 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,697 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,818 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:17,932 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,055 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,187 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,301 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,430 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,545 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,665 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,795 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:18,909 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:19,025 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:19,161 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:21:19,399 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:21:19,515 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:19,653 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:21:19,886 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:21:20,002 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 566