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_spec4_product53.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:21:36,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:21:36,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:21:36,110 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:21:36,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:21:36,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:21:36,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:21:36,127 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:21:36,129 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:21:36,132 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:21:36,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:21:36,135 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:21:36,135 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:21:36,139 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:21:36,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:21:36,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:21:36,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:21:36,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:21:36,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:21:36,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:21:36,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:21:36,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:21:36,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:21:36,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:21:36,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:21:36,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:21:36,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:21:36,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:21:36,171 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:21:36,172 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:21:36,172 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:21:36,174 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:21:36,175 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:21:36,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:21:36,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:21:36,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:21:36,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:21:36,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:21:36,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:21:36,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:21:36,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:21:36,184 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 03:21:36,201 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:21:36,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:21:36,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:21:36,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:21:36,207 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:21:36,207 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:21:36,207 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:21:36,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:21:36,208 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:21:36,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:21:36,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:21:36,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:21:36,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:21:36,210 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:21:36,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:21:36,210 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:21:36,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:21:36,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:21:36,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:21:36,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:21:36,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:21:36,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:21:36,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:21:36,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:21:36,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:21:36,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:21:36,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:21:36,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:21:36,213 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 03:21:36,540 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:21:36,552 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:21:36,556 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:21:36,557 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:21:36,558 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:21:36,558 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-15 03:21:36,618 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00adaf5da/e00429555b834b25850879efab48d352/FLAG7db956c83 [2019-10-15 03:21:37,180 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:21:37,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product53.cil.c [2019-10-15 03:21:37,196 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00adaf5da/e00429555b834b25850879efab48d352/FLAG7db956c83 [2019-10-15 03:21:37,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/00adaf5da/e00429555b834b25850879efab48d352 [2019-10-15 03:21:37,475 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:21:37,477 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:21:37,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:37,478 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:21:37,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:21:37,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:37" (1/1) ... [2019-10-15 03:21:37,483 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411accdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:37, skipping insertion in model container [2019-10-15 03:21:37,483 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:21:37" (1/1) ... [2019-10-15 03:21:37,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:21:37,538 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:21:37,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:37,987 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:21:38,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:21:38,131 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:21:38,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38 WrapperNode [2019-10-15 03:21:38,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:21:38,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:21:38,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:21:38,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:21:38,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,202 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (1/1) ... [2019-10-15 03:21:38,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:21:38,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:21:38,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:21:38,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:21:38,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (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 03:21:38,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:21:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:21:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:38,332 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:21:38,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:21:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:21:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:21:38,335 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:21:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:21:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:38,336 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:21:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:21:38,337 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:21:38,339 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:21:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:21:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:21:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:21:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:21:38,340 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:21:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:21:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:21:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:21:38,341 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:21:38,342 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:21:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:21:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:21:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:21:38,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:38,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:21:38,344 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:21:38,344 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:21:38,344 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:21:38,344 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:21:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:21:38,344 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:21:38,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:21:38,346 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:21:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:21:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:21:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:21:38,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:21:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:21:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:21:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:21:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:21:38,348 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:21:38,349 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:21:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:21:38,350 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:21:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:21:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-15 03:21:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:21:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:21:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:21:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__lowWaterSensor [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:21:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:21:38,354 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:21:38,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:21:38,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:21:38,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:21:40,044 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:21:40,045 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:21:40,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:40 BoogieIcfgContainer [2019-10-15 03:21:40,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:21:40,048 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:21:40,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:21:40,051 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:21:40,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:21:37" (1/3) ... [2019-10-15 03:21:40,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2232b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:40, skipping insertion in model container [2019-10-15 03:21:40,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:21:38" (2/3) ... [2019-10-15 03:21:40,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2232b369 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:21:40, skipping insertion in model container [2019-10-15 03:21:40,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:21:40" (3/3) ... [2019-10-15 03:21:40,055 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product53.cil.c [2019-10-15 03:21:40,065 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:21:40,075 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:21:40,086 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:21:40,113 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:21:40,114 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:21:40,114 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:21:40,114 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:21:40,114 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:21:40,115 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:21:40,115 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:21:40,115 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:21:40,151 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states. [2019-10-15 03:21:40,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-15 03:21:40,165 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,167 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] [2019-10-15 03:21:40,174 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,182 INFO L82 PathProgramCache]: Analyzing trace with hash 932161007, now seen corresponding path program 1 times [2019-10-15 03:21:40,192 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331025816] [2019-10-15 03:21:40,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:40,509 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 03:21:40,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331025816] [2019-10-15 03:21:40,511 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:40,512 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:21:40,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16458921] [2019-10-15 03:21:40,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:21:40,518 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:40,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:21:40,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:21:40,536 INFO L87 Difference]: Start difference. First operand 155 states. Second operand 2 states. [2019-10-15 03:21:40,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:40,616 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2019-10-15 03:21:40,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:21:40,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-15 03:21:40,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:40,631 INFO L225 Difference]: With dead ends: 243 [2019-10-15 03:21:40,632 INFO L226 Difference]: Without dead ends: 122 [2019-10-15 03:21:40,639 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 03:21:40,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2019-10-15 03:21:40,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2019-10-15 03:21:40,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-15 03:21:40,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 140 transitions. [2019-10-15 03:21:40,700 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 140 transitions. Word has length 42 [2019-10-15 03:21:40,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:40,701 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 140 transitions. [2019-10-15 03:21:40,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:21:40,702 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 140 transitions. [2019-10-15 03:21:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 03:21:40,705 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,705 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] [2019-10-15 03:21:40,706 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1254270614, now seen corresponding path program 1 times [2019-10-15 03:21:40,707 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,707 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83919175] [2019-10-15 03:21:40,707 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,708 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,708 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:40,880 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 03:21:40,881 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83919175] [2019-10-15 03:21:40,881 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:40,881 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:21:40,882 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350279206] [2019-10-15 03:21:40,884 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:21:40,884 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:40,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:21:40,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:21:40,885 INFO L87 Difference]: Start difference. First operand 122 states and 140 transitions. Second operand 3 states. [2019-10-15 03:21:40,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:40,908 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2019-10-15 03:21:40,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:21:40,909 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-15 03:21:40,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:40,911 INFO L225 Difference]: With dead ends: 201 [2019-10-15 03:21:40,912 INFO L226 Difference]: Without dead ends: 114 [2019-10-15 03:21:40,913 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 03:21:40,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-15 03:21:40,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-10-15 03:21:40,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-15 03:21:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2019-10-15 03:21:40,930 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 43 [2019-10-15 03:21:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:40,930 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2019-10-15 03:21:40,930 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:21:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2019-10-15 03:21:40,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-15 03:21:40,933 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:40,933 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] [2019-10-15 03:21:40,933 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:40,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:40,934 INFO L82 PathProgramCache]: Analyzing trace with hash -72457433, now seen corresponding path program 1 times [2019-10-15 03:21:40,934 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:40,934 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462867284] [2019-10-15 03:21:40,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,935 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:40,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,150 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 03:21:41,151 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462867284] [2019-10-15 03:21:41,151 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:41,151 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:21:41,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682897771] [2019-10-15 03:21:41,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:41,153 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:41,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:41,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:21:41,153 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand 7 states. [2019-10-15 03:21:41,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:41,501 INFO L93 Difference]: Finished difference Result 206 states and 237 transitions. [2019-10-15 03:21:41,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:21:41,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2019-10-15 03:21:41,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:41,504 INFO L225 Difference]: With dead ends: 206 [2019-10-15 03:21:41,504 INFO L226 Difference]: Without dead ends: 114 [2019-10-15 03:21:41,505 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 03:21:41,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2019-10-15 03:21:41,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2019-10-15 03:21:41,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2019-10-15 03:21:41,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2019-10-15 03:21:41,520 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 45 [2019-10-15 03:21:41,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:41,520 INFO L462 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2019-10-15 03:21:41,520 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:41,521 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2019-10-15 03:21:41,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-15 03:21:41,523 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:41,523 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:21:41,523 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:41,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:41,524 INFO L82 PathProgramCache]: Analyzing trace with hash 138210273, now seen corresponding path program 1 times [2019-10-15 03:21:41,524 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:41,524 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333411185] [2019-10-15 03:21:41,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,524 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:41,525 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:41,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:41,621 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 03:21:41,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333411185] [2019-10-15 03:21:41,622 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:41,622 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:21:41,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104014500] [2019-10-15 03:21:41,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:21:41,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:41,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:21:41,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:21:41,624 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 5 states. [2019-10-15 03:21:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:42,086 INFO L93 Difference]: Finished difference Result 296 states and 347 transitions. [2019-10-15 03:21:42,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:21:42,089 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-15 03:21:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:42,092 INFO L225 Difference]: With dead ends: 296 [2019-10-15 03:21:42,092 INFO L226 Difference]: Without dead ends: 204 [2019-10-15 03:21:42,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:21:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2019-10-15 03:21:42,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 189. [2019-10-15 03:21:42,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-10-15 03:21:42,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 206 transitions. [2019-10-15 03:21:42,163 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 206 transitions. Word has length 62 [2019-10-15 03:21:42,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:42,164 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 206 transitions. [2019-10-15 03:21:42,164 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:21:42,164 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 206 transitions. [2019-10-15 03:21:42,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 03:21:42,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:42,169 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] [2019-10-15 03:21:42,169 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:42,169 INFO L82 PathProgramCache]: Analyzing trace with hash -2141093705, now seen corresponding path program 1 times [2019-10-15 03:21:42,170 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:42,170 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439516183] [2019-10-15 03:21:42,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,170 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:42,332 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 03:21:42,332 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439516183] [2019-10-15 03:21:42,332 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:42,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-15 03:21:42,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339844915] [2019-10-15 03:21:42,333 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:21:42,334 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:42,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:21:42,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:21:42,335 INFO L87 Difference]: Start difference. First operand 189 states and 206 transitions. Second operand 10 states. [2019-10-15 03:21:42,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:42,853 INFO L93 Difference]: Finished difference Result 538 states and 613 transitions. [2019-10-15 03:21:42,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:21:42,853 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 72 [2019-10-15 03:21:42,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:42,858 INFO L225 Difference]: With dead ends: 538 [2019-10-15 03:21:42,858 INFO L226 Difference]: Without dead ends: 371 [2019-10-15 03:21:42,860 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:21:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2019-10-15 03:21:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 357. [2019-10-15 03:21:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2019-10-15 03:21:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 394 transitions. [2019-10-15 03:21:42,915 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 394 transitions. Word has length 72 [2019-10-15 03:21:42,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:42,917 INFO L462 AbstractCegarLoop]: Abstraction has 357 states and 394 transitions. [2019-10-15 03:21:42,917 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:21:42,918 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 394 transitions. [2019-10-15 03:21:42,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:21:42,921 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:42,922 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:42,922 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:42,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:42,923 INFO L82 PathProgramCache]: Analyzing trace with hash -238332763, now seen corresponding path program 1 times [2019-10-15 03:21:42,923 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:42,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976741539] [2019-10-15 03:21:42,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,923 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:42,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:21:43,263 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976741539] [2019-10-15 03:21:43,264 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066250721] [2019-10-15 03:21:43,264 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 03:21:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:43,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 29 conjunts are in the unsatisfiable core [2019-10-15 03:21:43,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:43,661 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:21:43,661 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-15 03:21:44,170 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:44,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 9] imperfect sequences [14] total 26 [2019-10-15 03:21:44,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787868826] [2019-10-15 03:21:44,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:21:44,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:44,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:21:44,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-10-15 03:21:44,173 INFO L87 Difference]: Start difference. First operand 357 states and 394 transitions. Second operand 14 states. [2019-10-15 03:21:45,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:45,390 INFO L93 Difference]: Finished difference Result 858 states and 952 transitions. [2019-10-15 03:21:45,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:21:45,392 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 115 [2019-10-15 03:21:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:45,398 INFO L225 Difference]: With dead ends: 858 [2019-10-15 03:21:45,398 INFO L226 Difference]: Without dead ends: 691 [2019-10-15 03:21:45,400 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 224 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2019-10-15 03:21:45,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-15 03:21:45,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 688. [2019-10-15 03:21:45,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-15 03:21:45,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 761 transitions. [2019-10-15 03:21:45,499 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 761 transitions. Word has length 115 [2019-10-15 03:21:45,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:45,500 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 761 transitions. [2019-10-15 03:21:45,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:21:45,500 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 761 transitions. [2019-10-15 03:21:45,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-10-15 03:21:45,504 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:45,504 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 03:21:45,709 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:45,709 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:45,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash 212382282, now seen corresponding path program 1 times [2019-10-15 03:21:45,710 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:45,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335560129] [2019-10-15 03:21:45,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:45,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:45,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 03:21:45,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335560129] [2019-10-15 03:21:45,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [694303661] [2019-10-15 03:21:45,988 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 03:21:46,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:46,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:21:46,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:46,268 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-15 03:21:46,269 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:46,456 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 03:21:46,456 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:21:46,457 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [14] total 19 [2019-10-15 03:21:46,457 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805491308] [2019-10-15 03:21:46,458 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:21:46,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:21:46,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:21:46,460 INFO L87 Difference]: Start difference. First operand 688 states and 761 transitions. Second operand 7 states. [2019-10-15 03:21:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:46,765 INFO L93 Difference]: Finished difference Result 703 states and 777 transitions. [2019-10-15 03:21:46,766 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 03:21:46,766 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 115 [2019-10-15 03:21:46,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:46,771 INFO L225 Difference]: With dead ends: 703 [2019-10-15 03:21:46,771 INFO L226 Difference]: Without dead ends: 700 [2019-10-15 03:21:46,772 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:21:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2019-10-15 03:21:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 688. [2019-10-15 03:21:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 688 states. [2019-10-15 03:21:46,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 759 transitions. [2019-10-15 03:21:46,815 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 759 transitions. Word has length 115 [2019-10-15 03:21:46,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:46,816 INFO L462 AbstractCegarLoop]: Abstraction has 688 states and 759 transitions. [2019-10-15 03:21:46,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:21:46,816 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 759 transitions. [2019-10-15 03:21:46,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-15 03:21:46,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:46,820 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:47,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:47,026 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,026 INFO L82 PathProgramCache]: Analyzing trace with hash -233038195, now seen corresponding path program 1 times [2019-10-15 03:21:47,026 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98290296] [2019-10-15 03:21:47,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,027 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:47,237 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-15 03:21:47,238 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98290296] [2019-10-15 03:21:47,238 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:21:47,238 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-15 03:21:47,238 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699403053] [2019-10-15 03:21:47,239 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:21:47,239 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:47,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:21:47,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:21:47,239 INFO L87 Difference]: Start difference. First operand 688 states and 759 transitions. Second operand 14 states. [2019-10-15 03:21:47,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:47,596 INFO L93 Difference]: Finished difference Result 1266 states and 1446 transitions. [2019-10-15 03:21:47,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:21:47,598 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 125 [2019-10-15 03:21:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:47,607 INFO L225 Difference]: With dead ends: 1266 [2019-10-15 03:21:47,608 INFO L226 Difference]: Without dead ends: 936 [2019-10-15 03:21:47,610 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:21:47,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 936 states. [2019-10-15 03:21:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 936 to 800. [2019-10-15 03:21:47,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2019-10-15 03:21:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 895 transitions. [2019-10-15 03:21:47,682 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 895 transitions. Word has length 125 [2019-10-15 03:21:47,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:47,684 INFO L462 AbstractCegarLoop]: Abstraction has 800 states and 895 transitions. [2019-10-15 03:21:47,684 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:21:47,684 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 895 transitions. [2019-10-15 03:21:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 03:21:47,689 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:47,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:47,690 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:47,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:47,690 INFO L82 PathProgramCache]: Analyzing trace with hash 16149934, now seen corresponding path program 1 times [2019-10-15 03:21:47,691 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:47,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239854495] [2019-10-15 03:21:47,691 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:47,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,210 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:21:48,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239854495] [2019-10-15 03:21:48,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1606130779] [2019-10-15 03:21:48,211 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 [2019-10-15 03:21:48,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:48,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-15 03:21:48,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:48,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,657 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:48,748 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:21:48,748 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:49,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:49,567 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:49,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:50,671 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-15 03:21:50,672 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:21:50,672 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-15 03:21:50,672 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201103813] [2019-10-15 03:21:50,673 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:21:50,673 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:21:50,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:21:50,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=958, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:21:50,674 INFO L87 Difference]: Start difference. First operand 800 states and 895 transitions. Second operand 12 states. [2019-10-15 03:21:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:21:52,649 INFO L93 Difference]: Finished difference Result 1694 states and 1964 transitions. [2019-10-15 03:21:52,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-15 03:21:52,649 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 131 [2019-10-15 03:21:52,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:21:52,655 INFO L225 Difference]: With dead ends: 1694 [2019-10-15 03:21:52,655 INFO L226 Difference]: Without dead ends: 916 [2019-10-15 03:21:52,659 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 238 SyntacticMatches, 11 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=397, Invalid=2053, Unknown=0, NotChecked=0, Total=2450 [2019-10-15 03:21:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2019-10-15 03:21:52,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 854. [2019-10-15 03:21:52,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 854 states. [2019-10-15 03:21:52,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 949 transitions. [2019-10-15 03:21:52,711 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 949 transitions. Word has length 131 [2019-10-15 03:21:52,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:21:52,711 INFO L462 AbstractCegarLoop]: Abstraction has 854 states and 949 transitions. [2019-10-15 03:21:52,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:21:52,711 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 949 transitions. [2019-10-15 03:21:52,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2019-10-15 03:21:52,714 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:21:52,715 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:21:52,919 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:21:52,919 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:21:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:21:52,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2123371978, now seen corresponding path program 1 times [2019-10-15 03:21:52,920 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:21:52,921 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076521428] [2019-10-15 03:21:52,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:52,921 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:21:52,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:21:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:53,246 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-10-15 03:21:53,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076521428] [2019-10-15 03:21:53,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520199232] [2019-10-15 03:21:53,247 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 [2019-10-15 03:21:53,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:21:53,478 INFO L256 TraceCheckSpWp]: Trace formula consists of 863 conjuncts, 56 conjunts are in the unsatisfiable core [2019-10-15 03:21:53,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:21:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 16 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:21:53,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:21:54,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,133 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,416 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:21:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:21:54,788 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [250133065] [2019-10-15 03:21:54,814 INFO L162 IcfgInterpreter]: Started Sifa with 106 locations of interest [2019-10-15 03:21:54,814 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:21:54,820 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:21:54,826 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:21:54,827 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:22:04,398 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-15 03:22:06,004 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:22:06,188 WARN L191 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:06,308 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:06,442 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-15 03:22:06,752 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:06,994 WARN L191 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,201 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,439 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,734 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-15 03:22:07,867 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:07,997 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:08,147 WARN L191 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:08,280 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:08,395 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-15 03:22:08,402 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-15 03:22:08,671 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 509 [2019-10-15 03:22:08,673 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-15 03:22:08,852 WARN L191 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:08,971 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:09,101 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:09,315 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:09,434 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:09,645 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:09,766 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:09,888 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:10,091 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 544 [2019-10-15 03:22:10,330 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:10,653 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:10,766 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:10,870 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:11,003 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:11,129 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:11,230 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:11,347 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:11,547 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:11,670 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:11,893 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:12,010 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:12,125 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:12,228 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:12,346 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:12,456 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:12,558 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:12,712 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:12,923 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:13,040 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,242 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:22:13,358 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,484 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,612 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,755 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:13,949 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 554 DAG size of output: 552 [2019-10-15 03:22:14,056 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,175 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,280 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,388 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,511 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 552 [2019-10-15 03:22:14,667 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-15 03:22:14,774 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 554 [2019-10-15 03:22:14,893 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:15,100 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-15 03:22:15,214 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-15 03:22:15,333 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556