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_spec5_product64.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:24:13,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:24:13,144 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:24:13,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:24:13,158 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:24:13,159 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:24:13,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:24:13,162 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:24:13,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:24:13,165 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:24:13,166 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:24:13,167 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:24:13,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:24:13,168 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:24:13,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:24:13,170 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:24:13,171 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:24:13,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:24:13,174 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:24:13,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:24:13,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:24:13,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:24:13,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:24:13,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:24:13,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:24:13,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:24:13,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:24:13,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:24:13,186 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:24:13,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:24:13,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:24:13,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:24:13,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:24:13,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:24:13,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:24:13,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:24:13,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:24:13,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:24:13,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:24:13,200 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:24:13,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:24:13,202 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 03:24:13,231 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:24:13,231 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:24:13,233 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:24:13,233 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:24:13,233 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:24:13,234 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:24:13,234 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:24:13,234 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:24:13,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:24:13,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:24:13,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:24:13,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:24:13,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:24:13,237 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:24:13,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:24:13,237 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:24:13,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:24:13,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:24:13,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:24:13,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:24:13,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:24:13,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:24:13,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:24:13,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:24:13,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:24:13,240 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:24:13,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:24:13,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:24:13,241 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 03:24:13,546 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:24:13,558 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:24:13,562 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:24:13,563 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:24:13,563 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:24:13,564 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-10-15 03:24:13,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51a4d47d/b49566c9ac2d4a7f94c8822a1f1fe8e8/FLAGe9ddf53eb [2019-10-15 03:24:14,154 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:24:14,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product64.cil.c [2019-10-15 03:24:14,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51a4d47d/b49566c9ac2d4a7f94c8822a1f1fe8e8/FLAGe9ddf53eb [2019-10-15 03:24:14,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a51a4d47d/b49566c9ac2d4a7f94c8822a1f1fe8e8 [2019-10-15 03:24:14,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:24:14,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:24:14,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:14,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:24:14,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:24:14,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b536ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14, skipping insertion in model container [2019-10-15 03:24:14,477 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,484 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:24:14,553 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:24:15,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:15,104 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:24:15,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:15,228 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:24:15,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15 WrapperNode [2019-10-15 03:24:15,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:15,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:24:15,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:24:15,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:24:15,242 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,261 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (1/1) ... [2019-10-15 03:24:15,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:24:15,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:24:15,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:24:15,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:24:15,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (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 03:24:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:24:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:24:15,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:24:15,382 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:24:15,383 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:24:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:24:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:24:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:24:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:24:15,384 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:24:15,385 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:24:15,386 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:24:15,387 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:24:15,388 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:15,389 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:24:15,390 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:24:15,391 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:24:15,392 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:24:15,393 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:24:15,394 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:24:15,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:24:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:24:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:24:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:24:17,174 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:24:17,175 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:24:17,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:17 BoogieIcfgContainer [2019-10-15 03:24:17,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:24:17,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:24:17,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:24:17,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:24:17,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:24:14" (1/3) ... [2019-10-15 03:24:17,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad45895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:17, skipping insertion in model container [2019-10-15 03:24:17,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:15" (2/3) ... [2019-10-15 03:24:17,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ad45895 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:17, skipping insertion in model container [2019-10-15 03:24:17,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:17" (3/3) ... [2019-10-15 03:24:17,186 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product64.cil.c [2019-10-15 03:24:17,199 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:24:17,209 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:24:17,222 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:24:17,252 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:24:17,252 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:24:17,252 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:24:17,252 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:24:17,253 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:24:17,253 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:24:17,253 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:24:17,253 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:24:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states. [2019-10-15 03:24:17,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:24:17,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,294 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] [2019-10-15 03:24:17,301 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,308 INFO L82 PathProgramCache]: Analyzing trace with hash 17459039, now seen corresponding path program 1 times [2019-10-15 03:24:17,318 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577744835] [2019-10-15 03:24:17,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,319 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:17,679 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577744835] [2019-10-15 03:24:17,681 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:17,683 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:24:17,683 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168340169] [2019-10-15 03:24:17,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:24:17,690 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:24:17,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:24:17,707 INFO L87 Difference]: Start difference. First operand 180 states. Second operand 2 states. [2019-10-15 03:24:17,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:17,757 INFO L93 Difference]: Finished difference Result 290 states and 355 transitions. [2019-10-15 03:24:17,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:24:17,759 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:24:17,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:17,773 INFO L225 Difference]: With dead ends: 290 [2019-10-15 03:24:17,773 INFO L226 Difference]: Without dead ends: 147 [2019-10-15 03:24:17,778 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 03:24:17,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-10-15 03:24:17,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-10-15 03:24:17,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-10-15 03:24:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 173 transitions. [2019-10-15 03:24:17,838 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 173 transitions. Word has length 52 [2019-10-15 03:24:17,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:17,838 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 173 transitions. [2019-10-15 03:24:17,838 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:24:17,839 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 173 transitions. [2019-10-15 03:24:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:24:17,843 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,843 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] [2019-10-15 03:24:17,844 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1035601648, now seen corresponding path program 1 times [2019-10-15 03:24:17,844 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,845 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451599674] [2019-10-15 03:24:17,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,845 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:17,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:17,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451599674] [2019-10-15 03:24:17,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:17,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:24:17,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861980019] [2019-10-15 03:24:17,975 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:24:17,975 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:17,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:24:17,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:24:17,976 INFO L87 Difference]: Start difference. First operand 147 states and 173 transitions. Second operand 3 states. [2019-10-15 03:24:18,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:18,031 INFO L93 Difference]: Finished difference Result 238 states and 280 transitions. [2019-10-15 03:24:18,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:24:18,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:24:18,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:18,040 INFO L225 Difference]: With dead ends: 238 [2019-10-15 03:24:18,040 INFO L226 Difference]: Without dead ends: 139 [2019-10-15 03:24:18,044 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 03:24:18,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-15 03:24:18,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 139. [2019-10-15 03:24:18,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-15 03:24:18,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 162 transitions. [2019-10-15 03:24:18,069 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 162 transitions. Word has length 53 [2019-10-15 03:24:18,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:18,071 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 162 transitions. [2019-10-15 03:24:18,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:24:18,071 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 162 transitions. [2019-10-15 03:24:18,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 03:24:18,074 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:18,074 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] [2019-10-15 03:24:18,074 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:18,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:18,075 INFO L82 PathProgramCache]: Analyzing trace with hash -976628071, now seen corresponding path program 1 times [2019-10-15 03:24:18,075 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:18,075 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405221219] [2019-10-15 03:24:18,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,076 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:18,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405221219] [2019-10-15 03:24:18,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:18,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:24:18,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993309356] [2019-10-15 03:24:18,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:24:18,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:18,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:24:18,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:24:18,340 INFO L87 Difference]: Start difference. First operand 139 states and 162 transitions. Second operand 7 states. [2019-10-15 03:24:19,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:19,042 INFO L93 Difference]: Finished difference Result 417 states and 503 transitions. [2019-10-15 03:24:19,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:24:19,043 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-15 03:24:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:19,053 INFO L225 Difference]: With dead ends: 417 [2019-10-15 03:24:19,053 INFO L226 Difference]: Without dead ends: 303 [2019-10-15 03:24:19,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:24:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2019-10-15 03:24:19,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 291. [2019-10-15 03:24:19,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2019-10-15 03:24:19,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2019-10-15 03:24:19,132 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 57 [2019-10-15 03:24:19,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:19,134 INFO L462 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2019-10-15 03:24:19,134 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:24:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2019-10-15 03:24:19,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:24:19,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:19,146 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] [2019-10-15 03:24:19,147 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:19,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:19,147 INFO L82 PathProgramCache]: Analyzing trace with hash 2135084772, now seen corresponding path program 1 times [2019-10-15 03:24:19,148 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:19,148 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814798789] [2019-10-15 03:24:19,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,148 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:19,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 03:24:19,329 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814798789] [2019-10-15 03:24:19,329 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:19,330 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:24:19,330 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869658263] [2019-10-15 03:24:19,336 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:24:19,337 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:19,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:24:19,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:24:19,338 INFO L87 Difference]: Start difference. First operand 291 states and 350 transitions. Second operand 7 states. [2019-10-15 03:24:20,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:20,185 INFO L93 Difference]: Finished difference Result 758 states and 979 transitions. [2019-10-15 03:24:20,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:24:20,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:24:20,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:20,200 INFO L225 Difference]: With dead ends: 758 [2019-10-15 03:24:20,201 INFO L226 Difference]: Without dead ends: 492 [2019-10-15 03:24:20,203 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-10-15 03:24:20,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-15 03:24:20,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 441. [2019-10-15 03:24:20,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 441 states. [2019-10-15 03:24:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 522 transitions. [2019-10-15 03:24:20,295 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 522 transitions. Word has length 61 [2019-10-15 03:24:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:20,297 INFO L462 AbstractCegarLoop]: Abstraction has 441 states and 522 transitions. [2019-10-15 03:24:20,297 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:24:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 522 transitions. [2019-10-15 03:24:20,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2019-10-15 03:24:20,301 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:20,301 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:20,301 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:20,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:20,302 INFO L82 PathProgramCache]: Analyzing trace with hash -91380313, now seen corresponding path program 1 times [2019-10-15 03:24:20,302 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:20,303 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432968636] [2019-10-15 03:24:20,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:20,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:20,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:20,562 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432968636] [2019-10-15 03:24:20,562 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:20,562 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:24:20,563 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776925401] [2019-10-15 03:24:20,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:24:20,564 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:20,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:24:20,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:24:20,564 INFO L87 Difference]: Start difference. First operand 441 states and 522 transitions. Second operand 12 states. [2019-10-15 03:24:21,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:21,802 INFO L93 Difference]: Finished difference Result 1286 states and 1573 transitions. [2019-10-15 03:24:21,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:24:21,802 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2019-10-15 03:24:21,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:21,809 INFO L225 Difference]: With dead ends: 1286 [2019-10-15 03:24:21,810 INFO L226 Difference]: Without dead ends: 870 [2019-10-15 03:24:21,812 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:24:21,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2019-10-15 03:24:21,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 848. [2019-10-15 03:24:21,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2019-10-15 03:24:21,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1025 transitions. [2019-10-15 03:24:21,881 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1025 transitions. Word has length 97 [2019-10-15 03:24:21,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:21,881 INFO L462 AbstractCegarLoop]: Abstraction has 848 states and 1025 transitions. [2019-10-15 03:24:21,882 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:24:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1025 transitions. [2019-10-15 03:24:21,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-15 03:24:21,885 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:21,886 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:21,886 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:21,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:21,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1350927770, now seen corresponding path program 1 times [2019-10-15 03:24:21,887 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:21,887 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598934378] [2019-10-15 03:24:21,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:21,887 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:21,888 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:22,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:22,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598934378] [2019-10-15 03:24:22,054 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:22,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:24:22,055 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136992737] [2019-10-15 03:24:22,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:24:22,056 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:22,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:24:22,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:24:22,057 INFO L87 Difference]: Start difference. First operand 848 states and 1025 transitions. Second operand 9 states. [2019-10-15 03:24:23,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:23,232 INFO L93 Difference]: Finished difference Result 2724 states and 3404 transitions. [2019-10-15 03:24:23,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:24:23,232 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 100 [2019-10-15 03:24:23,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:23,247 INFO L225 Difference]: With dead ends: 2724 [2019-10-15 03:24:23,248 INFO L226 Difference]: Without dead ends: 2073 [2019-10-15 03:24:23,251 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:24:23,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2019-10-15 03:24:23,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1783. [2019-10-15 03:24:23,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1783 states. [2019-10-15 03:24:23,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2173 transitions. [2019-10-15 03:24:23,399 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2173 transitions. Word has length 100 [2019-10-15 03:24:23,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:23,400 INFO L462 AbstractCegarLoop]: Abstraction has 1783 states and 2173 transitions. [2019-10-15 03:24:23,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:24:23,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2173 transitions. [2019-10-15 03:24:23,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-15 03:24:23,404 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:23,404 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:24:23,405 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:23,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:23,405 INFO L82 PathProgramCache]: Analyzing trace with hash -2036118335, now seen corresponding path program 1 times [2019-10-15 03:24:23,405 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:23,406 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914224461] [2019-10-15 03:24:23,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:23,406 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:23,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:23,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:23,635 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:24:23,635 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914224461] [2019-10-15 03:24:23,636 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636610812] [2019-10-15 03:24:23,636 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 03:24:23,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:23,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:24:23,887 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:24:24,062 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:24:24,063 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:24:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:24:24,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1137066997] [2019-10-15 03:24:24,664 INFO L162 IcfgInterpreter]: Started Sifa with 123 locations of interest [2019-10-15 03:24:24,664 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:24:24,671 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:24:24,680 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:24:24,681 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:24:34,911 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:24:36,646 WARN L191 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:24:36,782 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:36,929 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:37,102 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:37,357 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:37,604 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:37,789 WARN L191 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:38,007 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:38,331 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:24:38,506 WARN L191 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:38,669 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:38,807 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:38,931 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:39,050 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:39,062 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:24:39,384 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-15 03:24:39,385 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:24:39,551 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:39,680 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:39,839 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:39,998 WARN L191 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,106 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,254 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:40,373 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,479 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,637 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:40,911 WARN L191 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:24:41,014 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:41,160 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,282 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:41,425 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:41,559 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,660 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:41,764 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:41,903 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,023 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:42,157 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:42,280 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,611 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,812 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:42,977 WARN L191 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:43,079 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:43,302 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:43,627 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:43,745 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:43,969 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,071 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:44,180 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:44,304 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,437 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,554 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,730 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,851 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:44,964 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:45,097 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:45,212 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:45,327 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:45,451 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:45,585 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:45,718 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:45,850 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:46,080 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:46,197 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:46,329 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:46,537 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:46,671 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:46,817 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:46,937 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:47,056 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:47,201 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:47,321 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:47,440 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:47,570 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:47,712 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:47,838 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:48,023 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:48,263 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-15 03:24:48,382 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:48,658 WARN L191 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:48,861 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:48,982 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:49,109 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:49,270 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,391 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,527 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,651 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,764 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,899 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,015 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,137 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,262 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,394 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:50,512 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:50,641 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:50,856 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:50,975 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:51,113 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:51,327 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:51,444 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:51,571 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:51,812 WARN L191 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 573 [2019-10-15 03:24:51,929 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:52,058 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 573 [2019-10-15 03:24:52,277 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 575 [2019-10-15 03:24:52,394 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:52,530 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-15 03:24:52,657 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:52,769 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:52,897 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,013 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,125 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,254 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,382 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,504 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,626 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,752 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,867 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,992 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:54,108 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:54,246 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:54,370 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:54,482 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564