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_product57.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:15:35,069 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:15:35,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:15:35,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:15:35,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:15:35,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:15:35,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:15:35,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:15:35,095 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:15:35,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:15:35,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:15:35,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:15:35,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:15:35,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:15:35,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:15:35,110 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:15:35,111 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:15:35,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:15:35,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:15:35,124 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:15:35,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:15:35,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:15:35,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:15:35,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:15:35,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:15:35,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:15:35,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:15:35,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:15:35,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:15:35,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:15:35,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:15:35,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:15:35,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:15:35,138 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:15:35,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:15:35,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:15:35,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:15:35,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:15:35,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:15:35,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:15:35,142 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:15:35,143 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 [2019-10-13 23:15:35,158 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:15:35,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:15:35,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:15:35,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:15:35,160 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:15:35,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:15:35,160 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:15:35,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:15:35,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:15:35,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:15:35,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:15:35,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:15:35,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:15:35,162 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:15:35,162 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:15:35,162 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:15:35,162 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:15:35,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:15:35,163 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:15:35,163 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:15:35,163 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:15:35,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:15:35,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:15:35,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:15:35,164 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:15:35,164 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:15:35,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:15:35,165 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:15:35,165 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 [2019-10-13 23:15:35,475 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:15:35,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:15:35,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:15:35,496 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:15:35,497 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:15:35,497 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-13 23:15:35,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3ca217/ad084096126a4f5fb095424bda730400/FLAG07df03aa4 [2019-10-13 23:15:36,080 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:15:36,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec2_product57.cil.c [2019-10-13 23:15:36,102 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3ca217/ad084096126a4f5fb095424bda730400/FLAG07df03aa4 [2019-10-13 23:15:36,380 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1a3ca217/ad084096126a4f5fb095424bda730400 [2019-10-13 23:15:36,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:15:36,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:15:36,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:36,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:15:36,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:15:36,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:36" (1/1) ... [2019-10-13 23:15:36,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11039f50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:36, skipping insertion in model container [2019-10-13 23:15:36,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:15:36" (1/1) ... [2019-10-13 23:15:36,405 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:15:36,457 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:15:36,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:36,921 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:15:37,039 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:15:37,087 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:15:37,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37 WrapperNode [2019-10-13 23:15:37,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:15:37,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:15:37,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:15:37,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:15:37,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,117 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,151 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,173 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (1/1) ... [2019-10-13 23:15:37,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:15:37,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:15:37,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:15:37,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:15:37,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (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 [2019-10-13 23:15:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:15:37,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:15:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:15:37,256 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:15:37,257 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:15:37,258 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:15:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:15:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:15:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:15:37,259 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:15:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:15:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:15:37,260 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:15:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-13 23:15:37,261 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:15:37,263 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:15:37,264 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:15:37,265 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:15:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:15:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:15:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:15:37,266 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-13 23:15:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:15:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:37,267 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:15:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:15:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:15:37,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:15:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:15:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:15:37,268 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:15:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:15:37,269 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:15:37,271 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:15:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:15:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:15:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:15:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-13 23:15:37,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:15:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:15:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:15:37,273 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1 [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:15:37,274 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:15:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:15:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:15:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2 [2019-10-13 23:15:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:15:37,275 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:15:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:15:37,276 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:15:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:15:37,277 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-13 23:15:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-13 23:15:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-13 23:15:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:15:37,278 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:15:37,279 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:15:37,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:15:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:15:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:15:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:15:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:15:37,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:15:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:15:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:15:37,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:15:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:15:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:15:37,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:15:38,936 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:15:38,936 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:15:38,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:38 BoogieIcfgContainer [2019-10-13 23:15:38,938 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:15:38,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:15:38,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:15:38,942 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:15:38,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:15:36" (1/3) ... [2019-10-13 23:15:38,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec42c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:38, skipping insertion in model container [2019-10-13 23:15:38,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:15:37" (2/3) ... [2019-10-13 23:15:38,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ec42c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:15:38, skipping insertion in model container [2019-10-13 23:15:38,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:15:38" (3/3) ... [2019-10-13 23:15:38,946 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product57.cil.c [2019-10-13 23:15:38,956 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:15:38,965 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:15:38,976 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:15:39,003 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:15:39,003 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:15:39,003 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:15:39,003 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:15:39,004 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:15:39,004 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:15:39,004 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:15:39,004 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:15:39,027 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2019-10-13 23:15:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-13 23:15:39,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:39,040 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] [2019-10-13 23:15:39,042 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:39,049 INFO L82 PathProgramCache]: Analyzing trace with hash 460544378, now seen corresponding path program 1 times [2019-10-13 23:15:39,062 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:39,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457290893] [2019-10-13 23:15:39,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,063 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:39,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:39,459 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457290893] [2019-10-13 23:15:39,460 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:39,460 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:15:39,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113809301] [2019-10-13 23:15:39,466 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:15:39,466 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:39,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:15:39,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:15:39,484 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 2 states. [2019-10-13 23:15:39,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:39,529 INFO L93 Difference]: Finished difference Result 238 states and 285 transitions. [2019-10-13 23:15:39,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:15:39,531 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 46 [2019-10-13 23:15:39,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:39,546 INFO L225 Difference]: With dead ends: 238 [2019-10-13 23:15:39,546 INFO L226 Difference]: Without dead ends: 121 [2019-10-13 23:15:39,552 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 [2019-10-13 23:15:39,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-13 23:15:39,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2019-10-13 23:15:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-13 23:15:39,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2019-10-13 23:15:39,660 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 46 [2019-10-13 23:15:39,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:39,662 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2019-10-13 23:15:39,662 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:15:39,662 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2019-10-13 23:15:39,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-13 23:15:39,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:39,669 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] [2019-10-13 23:15:39,669 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:39,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:39,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1113830539, now seen corresponding path program 1 times [2019-10-13 23:15:39,671 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:39,672 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340053579] [2019-10-13 23:15:39,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,672 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,672 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:39,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:39,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340053579] [2019-10-13 23:15:39,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:39,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:15:39,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601598405] [2019-10-13 23:15:39,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:39,849 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:39,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:39,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:15:39,850 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 3 states. [2019-10-13 23:15:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:39,896 INFO L93 Difference]: Finished difference Result 196 states and 224 transitions. [2019-10-13 23:15:39,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:39,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-13 23:15:39,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:39,900 INFO L225 Difference]: With dead ends: 196 [2019-10-13 23:15:39,900 INFO L226 Difference]: Without dead ends: 113 [2019-10-13 23:15:39,902 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 [2019-10-13 23:15:39,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-13 23:15:39,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-13 23:15:39,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-13 23:15:39,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 127 transitions. [2019-10-13 23:15:39,923 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 127 transitions. Word has length 47 [2019-10-13 23:15:39,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:39,924 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 127 transitions. [2019-10-13 23:15:39,924 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:39,924 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 127 transitions. [2019-10-13 23:15:39,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 23:15:39,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:39,927 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] [2019-10-13 23:15:39,927 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:39,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:39,929 INFO L82 PathProgramCache]: Analyzing trace with hash 636064672, now seen corresponding path program 1 times [2019-10-13 23:15:39,929 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:39,930 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140006327] [2019-10-13 23:15:39,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,930 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:39,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:40,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:40,133 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140006327] [2019-10-13 23:15:40,134 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:40,134 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:40,137 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529814205] [2019-10-13 23:15:40,138 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:40,138 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:40,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:40,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:40,139 INFO L87 Difference]: Start difference. First operand 113 states and 127 transitions. Second operand 7 states. [2019-10-13 23:15:40,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:40,451 INFO L93 Difference]: Finished difference Result 201 states and 230 transitions. [2019-10-13 23:15:40,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:15:40,452 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 49 [2019-10-13 23:15:40,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:40,454 INFO L225 Difference]: With dead ends: 201 [2019-10-13 23:15:40,454 INFO L226 Difference]: Without dead ends: 113 [2019-10-13 23:15:40,455 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 [2019-10-13 23:15:40,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-13 23:15:40,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-13 23:15:40,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-13 23:15:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2019-10-13 23:15:40,469 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 49 [2019-10-13 23:15:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:40,469 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2019-10-13 23:15:40,469 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2019-10-13 23:15:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 23:15:40,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:40,472 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] [2019-10-13 23:15:40,472 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:40,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:40,473 INFO L82 PathProgramCache]: Analyzing trace with hash 687835803, now seen corresponding path program 1 times [2019-10-13 23:15:40,473 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:40,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992930094] [2019-10-13 23:15:40,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,474 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:40,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:40,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:40,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:40,607 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992930094] [2019-10-13 23:15:40,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:40,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 23:15:40,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416528724] [2019-10-13 23:15:40,608 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 23:15:40,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 23:15:40,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 23:15:40,609 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 5 states. [2019-10-13 23:15:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:41,051 INFO L93 Difference]: Finished difference Result 287 states and 336 transitions. [2019-10-13 23:15:41,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:15:41,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2019-10-13 23:15:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:41,058 INFO L225 Difference]: With dead ends: 287 [2019-10-13 23:15:41,059 INFO L226 Difference]: Without dead ends: 199 [2019-10-13 23:15:41,060 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:15:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2019-10-13 23:15:41,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 184. [2019-10-13 23:15:41,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2019-10-13 23:15:41,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 204 transitions. [2019-10-13 23:15:41,106 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 204 transitions. Word has length 62 [2019-10-13 23:15:41,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:41,109 INFO L462 AbstractCegarLoop]: Abstraction has 184 states and 204 transitions. [2019-10-13 23:15:41,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 23:15:41,110 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 204 transitions. [2019-10-13 23:15:41,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-10-13 23:15:41,115 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:41,115 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] [2019-10-13 23:15:41,116 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:41,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:41,116 INFO L82 PathProgramCache]: Analyzing trace with hash -329908176, now seen corresponding path program 1 times [2019-10-13 23:15:41,116 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:41,117 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973971791] [2019-10-13 23:15:41,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:41,117 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:41,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:41,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:41,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973971791] [2019-10-13 23:15:41,251 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:41,251 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 23:15:41,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394524734] [2019-10-13 23:15:41,254 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 23:15:41,254 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:41,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 23:15:41,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 23:15:41,255 INFO L87 Difference]: Start difference. First operand 184 states and 204 transitions. Second operand 6 states. [2019-10-13 23:15:41,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:41,483 INFO L93 Difference]: Finished difference Result 485 states and 553 transitions. [2019-10-13 23:15:41,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:15:41,484 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 71 [2019-10-13 23:15:41,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:41,489 INFO L225 Difference]: With dead ends: 485 [2019-10-13 23:15:41,489 INFO L226 Difference]: Without dead ends: 326 [2019-10-13 23:15:41,490 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 [2019-10-13 23:15:41,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2019-10-13 23:15:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 316. [2019-10-13 23:15:41,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-13 23:15:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 348 transitions. [2019-10-13 23:15:41,539 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 348 transitions. Word has length 71 [2019-10-13 23:15:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:41,539 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 348 transitions. [2019-10-13 23:15:41,540 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 23:15:41,540 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 348 transitions. [2019-10-13 23:15:41,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 23:15:41,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:41,543 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:41,543 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:41,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:41,543 INFO L82 PathProgramCache]: Analyzing trace with hash -1674285327, now seen corresponding path program 1 times [2019-10-13 23:15:41,543 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:41,544 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870241822] [2019-10-13 23:15:41,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:41,544 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:41,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:41,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:15:41,681 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870241822] [2019-10-13 23:15:41,682 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:15:41,682 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:15:41,682 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709356142] [2019-10-13 23:15:41,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:15:41,683 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:41,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:15:41,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:15:41,683 INFO L87 Difference]: Start difference. First operand 316 states and 348 transitions. Second operand 7 states. [2019-10-13 23:15:42,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:42,293 INFO L93 Difference]: Finished difference Result 497 states and 566 transitions. [2019-10-13 23:15:42,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:15:42,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-13 23:15:42,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:42,297 INFO L225 Difference]: With dead ends: 497 [2019-10-13 23:15:42,297 INFO L226 Difference]: Without dead ends: 338 [2019-10-13 23:15:42,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-13 23:15:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-10-13 23:15:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 315. [2019-10-13 23:15:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2019-10-13 23:15:42,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 345 transitions. [2019-10-13 23:15:42,324 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 345 transitions. Word has length 74 [2019-10-13 23:15:42,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:42,324 INFO L462 AbstractCegarLoop]: Abstraction has 315 states and 345 transitions. [2019-10-13 23:15:42,325 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:15:42,325 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 345 transitions. [2019-10-13 23:15:42,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-10-13 23:15:42,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:42,327 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] [2019-10-13 23:15:42,327 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:42,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:42,327 INFO L82 PathProgramCache]: Analyzing trace with hash -386248813, now seen corresponding path program 1 times [2019-10-13 23:15:42,328 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:42,328 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582377803] [2019-10-13 23:15:42,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:42,328 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:42,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:42,503 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:15:42,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582377803] [2019-10-13 23:15:42,504 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579324470] [2019-10-13 23:15:42,504 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 [2019-10-13 23:15:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:42,779 INFO L256 TraceCheckSpWp]: Trace formula consists of 766 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-13 23:15:42,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:42,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:15:42,862 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:15:43,037 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 23:15:43,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [14] total 15 [2019-10-13 23:15:43,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547050539] [2019-10-13 23:15:43,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:15:43,038 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:43,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:15:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:43,040 INFO L87 Difference]: Start difference. First operand 315 states and 345 transitions. Second operand 3 states. [2019-10-13 23:15:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:43,082 INFO L93 Difference]: Finished difference Result 453 states and 509 transitions. [2019-10-13 23:15:43,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:15:43,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-10-13 23:15:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:43,085 INFO L225 Difference]: With dead ends: 453 [2019-10-13 23:15:43,086 INFO L226 Difference]: Without dead ends: 450 [2019-10-13 23:15:43,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2019-10-13 23:15:43,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2019-10-13 23:15:43,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 443. [2019-10-13 23:15:43,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2019-10-13 23:15:43,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 497 transitions. [2019-10-13 23:15:43,116 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 497 transitions. Word has length 87 [2019-10-13 23:15:43,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:43,116 INFO L462 AbstractCegarLoop]: Abstraction has 443 states and 497 transitions. [2019-10-13 23:15:43,117 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:15:43,117 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 497 transitions. [2019-10-13 23:15:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 23:15:43,120 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:43,120 INFO L380 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:43,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:43,326 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:43,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:43,326 INFO L82 PathProgramCache]: Analyzing trace with hash -1379291083, now seen corresponding path program 1 times [2019-10-13 23:15:43,327 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:43,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535067555] [2019-10-13 23:15:43,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,327 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:43,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:43,519 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-13 23:15:43,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535067555] [2019-10-13 23:15:43,520 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111964902] [2019-10-13 23:15:43,520 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 [2019-10-13 23:15:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:43,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-13 23:15:43,801 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-13 23:15:43,946 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-13 23:15:44,704 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:44,704 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14, 12] total 25 [2019-10-13 23:15:44,704 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914796236] [2019-10-13 23:15:44,705 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 23:15:44,705 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:44,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 23:15:44,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2019-10-13 23:15:44,706 INFO L87 Difference]: Start difference. First operand 443 states and 497 transitions. Second operand 11 states. [2019-10-13 23:15:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:45,529 INFO L93 Difference]: Finished difference Result 957 states and 1110 transitions. [2019-10-13 23:15:45,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:15:45,530 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 138 [2019-10-13 23:15:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:45,534 INFO L225 Difference]: With dead ends: 957 [2019-10-13 23:15:45,534 INFO L226 Difference]: Without dead ends: 539 [2019-10-13 23:15:45,536 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2019-10-13 23:15:45,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2019-10-13 23:15:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 528. [2019-10-13 23:15:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2019-10-13 23:15:45,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 587 transitions. [2019-10-13 23:15:45,572 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 587 transitions. Word has length 138 [2019-10-13 23:15:45,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:45,573 INFO L462 AbstractCegarLoop]: Abstraction has 528 states and 587 transitions. [2019-10-13 23:15:45,573 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 23:15:45,573 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 587 transitions. [2019-10-13 23:15:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2019-10-13 23:15:45,576 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:45,576 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:45,781 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:45,782 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:45,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:45,783 INFO L82 PathProgramCache]: Analyzing trace with hash 792749221, now seen corresponding path program 1 times [2019-10-13 23:15:45,783 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:45,783 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881180352] [2019-10-13 23:15:45,783 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:45,784 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:45,784 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 23:15:46,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881180352] [2019-10-13 23:15:46,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747649168] [2019-10-13 23:15:46,027 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 [2019-10-13 23:15:46,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:46,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 1023 conjuncts, 27 conjunts are in the unsatisfiable core [2019-10-13 23:15:46,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:46,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:46,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:46,556 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2019-10-13 23:15:46,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:47,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:47,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:47,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:48,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:48,109 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 35 proven. 14 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2019-10-13 23:15:48,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 23:15:48,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [14, 12] total 34 [2019-10-13 23:15:48,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761532660] [2019-10-13 23:15:48,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:15:48,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:15:48,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:15:48,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2019-10-13 23:15:48,359 INFO L87 Difference]: Start difference. First operand 528 states and 587 transitions. Second operand 12 states. [2019-10-13 23:15:50,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:15:50,390 INFO L93 Difference]: Finished difference Result 1291 states and 1500 transitions. [2019-10-13 23:15:50,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-10-13 23:15:50,391 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 183 [2019-10-13 23:15:50,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:15:50,399 INFO L225 Difference]: With dead ends: 1291 [2019-10-13 23:15:50,400 INFO L226 Difference]: Without dead ends: 788 [2019-10-13 23:15:50,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 341 SyntacticMatches, 10 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=396, Invalid=2054, Unknown=0, NotChecked=0, Total=2450 [2019-10-13 23:15:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-13 23:15:50,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 749. [2019-10-13 23:15:50,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2019-10-13 23:15:50,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 851 transitions. [2019-10-13 23:15:50,472 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 851 transitions. Word has length 183 [2019-10-13 23:15:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:15:50,475 INFO L462 AbstractCegarLoop]: Abstraction has 749 states and 851 transitions. [2019-10-13 23:15:50,475 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:15:50,475 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 851 transitions. [2019-10-13 23:15:50,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-13 23:15:50,480 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:15:50,481 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:15:50,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:15:50,694 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:15:50,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:15:50,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2045392550, now seen corresponding path program 1 times [2019-10-13 23:15:50,695 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:15:50,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728457639] [2019-10-13 23:15:50,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:50,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:15:50,695 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:15:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 37 proven. 17 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2019-10-13 23:15:51,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728457639] [2019-10-13 23:15:51,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107366047] [2019-10-13 23:15:51,088 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 [2019-10-13 23:15:51,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:15:51,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 50 conjunts are in the unsatisfiable core [2019-10-13 23:15:51,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:15:51,598 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,633 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,692 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:51,840 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 74 proven. 31 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 23:15:51,840 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:15:52,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,422 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,626 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,678 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,750 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,893 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,926 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,946 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:52,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:53,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:53,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:53,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:15:53,304 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 45 proven. 15 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-13 23:15:53,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1110068769] [2019-10-13 23:15:53,332 INFO L162 IcfgInterpreter]: Started Sifa with 109 locations of interest [2019-10-13 23:15:53,333 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:15:53,339 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:15:53,347 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:15:53,347 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:16:03,248 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:16:05,082 WARN L191 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:16:05,222 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:05,350 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:05,464 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:16:05,747 WARN L191 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:05,932 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:06,096 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:06,259 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:06,627 WARN L191 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:16:06,749 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:06,918 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:07,043 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:07,180 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:07,293 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:16:07,301 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:16:07,534 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 550 for LOIs [2019-10-13 23:16:07,772 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:07,900 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:08,010 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:08,116 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:08,235 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:08,445 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:08,583 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:08,702 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:08,893 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 550 [2019-10-13 23:16:08,996 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:09,299 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:09,542 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:09,676 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:09,863 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:09,974 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:10,097 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:10,236 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:10,440 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:10,555 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:10,897 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:11,020 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:11,239 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:11,340 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:11,557 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:11,775 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:11,894 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:12,210 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:12,414 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 550 [2019-10-13 23:16:12,562 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:12,689 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:12,797 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:12,916 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,128 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-13 23:16:13,237 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,377 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,486 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,594 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,709 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-13 23:16:13,860 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:13,970 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,090 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,349 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:16:14,460 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,608 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:16:14,807 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564