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_product48.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:18:48,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:18:48,257 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:18:48,278 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:18:48,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:18:48,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:18:48,283 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:18:48,293 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:18:48,298 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:18:48,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:18:48,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:18:48,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:18:48,304 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:18:48,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:18:48,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:18:48,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:18:48,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:18:48,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:18:48,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:18:48,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:18:48,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:18:48,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:18:48,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:18:48,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:18:48,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:18:48,331 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:18:48,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:18:48,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:18:48,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:18:48,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:18:48,335 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:18:48,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:18:48,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:18:48,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:18:48,340 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:18:48,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:18:48,341 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:18:48,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:18:48,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:18:48,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:18:48,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:18:48,344 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 23:18:48,382 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:18:48,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:18:48,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:18:48,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:18:48,385 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:18:48,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:18:48,385 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:18:48,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:18:48,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:18:48,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:18:48,389 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:18:48,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:18:48,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:18:48,390 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:18:48,390 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:18:48,390 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:18:48,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:18:48,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:18:48,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:18:48,391 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:18:48,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:18:48,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:18:48,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:18:48,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:18:48,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:18:48,395 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:18:48,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:18:48,395 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:18:48,395 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 23:18:48,701 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:18:48,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:18:48,729 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:18:48,731 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:18:48,731 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:18:48,732 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-10-13 23:18:48,806 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93b42a5a/1066cf529ced4a94bf5f1d63aad68d2b/FLAG8f96808b7 [2019-10-13 23:18:49,347 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:18:49,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product48.cil.c [2019-10-13 23:18:49,368 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93b42a5a/1066cf529ced4a94bf5f1d63aad68d2b/FLAG8f96808b7 [2019-10-13 23:18:49,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b93b42a5a/1066cf529ced4a94bf5f1d63aad68d2b [2019-10-13 23:18:49,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:18:49,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:18:49,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:49,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:18:49,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:18:49,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:49" (1/1) ... [2019-10-13 23:18:49,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e20f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:49, skipping insertion in model container [2019-10-13 23:18:49,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:18:49" (1/1) ... [2019-10-13 23:18:49,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:18:49,752 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:18:50,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:50,284 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:18:50,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:18:50,404 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:18:50,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50 WrapperNode [2019-10-13 23:18:50,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:18:50,406 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:18:50,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:18:50,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:18:50,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,478 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (1/1) ... [2019-10-13 23:18:50,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:18:50,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:18:50,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:18:50,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:18:50,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (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 23:18:50,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:50,562 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:50,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:50,564 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 23:18:50,565 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 23:18:50,566 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-13 23:18:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-13 23:18:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:18:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-13 23:18:50,567 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-10-13 23:18:50,569 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-13 23:18:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-13 23:18:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-13 23:18:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-13 23:18:50,570 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-13 23:18:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-13 23:18:50,571 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-13 23:18:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure startSystem [2019-10-13 23:18:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-13 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-13 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-13 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-13 23:18:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 23:18:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-13 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 23:18:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 23:18:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 23:18:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 23:18:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:18:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 23:18:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 23:18:50,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 23:18:50,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 23:18:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 23:18:50,580 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-13 23:18:50,581 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure startSystem [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-13 23:18:50,582 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-13 23:18:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-13 23:18:50,583 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-13 23:18:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-13 23:18:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-13 23:18:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-13 23:18:50,584 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-13 23:18:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-13 23:18:50,585 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-13 23:18:50,586 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-10-13 23:18:50,587 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 23:18:50,588 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 23:18:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:18:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 23:18:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:18:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 23:18:50,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:18:52,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:18:52,136 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-13 23:18:52,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:52 BoogieIcfgContainer [2019-10-13 23:18:52,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:18:52,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:18:52,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:18:52,146 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:18:52,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:18:49" (1/3) ... [2019-10-13 23:18:52,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190569f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:52, skipping insertion in model container [2019-10-13 23:18:52,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:18:50" (2/3) ... [2019-10-13 23:18:52,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@190569f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:18:52, skipping insertion in model container [2019-10-13 23:18:52,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:18:52" (3/3) ... [2019-10-13 23:18:52,151 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product48.cil.c [2019-10-13 23:18:52,162 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:18:52,173 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:18:52,185 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:18:52,217 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:18:52,217 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:18:52,217 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:18:52,217 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:18:52,218 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:18:52,218 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:18:52,218 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:18:52,218 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:18:52,242 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2019-10-13 23:18:52,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 23:18:52,251 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:52,252 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] [2019-10-13 23:18:52,254 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:52,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:52,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1086490687, now seen corresponding path program 1 times [2019-10-13 23:18:52,270 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:52,271 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894021678] [2019-10-13 23:18:52,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:52,271 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:52,272 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:52,642 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 23:18:52,643 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894021678] [2019-10-13 23:18:52,644 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:52,645 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 23:18:52,646 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519292875] [2019-10-13 23:18:52,652 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:18:52,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:52,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:18:52,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:18:52,673 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 2 states. [2019-10-13 23:18:52,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:52,716 INFO L93 Difference]: Finished difference Result 258 states and 315 transitions. [2019-10-13 23:18:52,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:18:52,718 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-13 23:18:52,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:52,732 INFO L225 Difference]: With dead ends: 258 [2019-10-13 23:18:52,732 INFO L226 Difference]: Without dead ends: 131 [2019-10-13 23:18:52,738 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 23:18:52,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2019-10-13 23:18:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2019-10-13 23:18:52,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2019-10-13 23:18:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 153 transitions. [2019-10-13 23:18:52,794 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 153 transitions. Word has length 52 [2019-10-13 23:18:52,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:52,794 INFO L462 AbstractCegarLoop]: Abstraction has 131 states and 153 transitions. [2019-10-13 23:18:52,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:18:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 153 transitions. [2019-10-13 23:18:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-13 23:18:52,799 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:52,799 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] [2019-10-13 23:18:52,799 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:52,800 INFO L82 PathProgramCache]: Analyzing trace with hash -245124710, now seen corresponding path program 1 times [2019-10-13 23:18:52,800 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:52,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046647520] [2019-10-13 23:18:52,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:52,801 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:52,801 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:52,909 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 23:18:52,910 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046647520] [2019-10-13 23:18:52,910 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:52,911 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 23:18:52,911 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623830337] [2019-10-13 23:18:52,914 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 23:18:52,915 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:52,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 23:18:52,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 23:18:52,916 INFO L87 Difference]: Start difference. First operand 131 states and 153 transitions. Second operand 3 states. [2019-10-13 23:18:52,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:52,964 INFO L93 Difference]: Finished difference Result 206 states and 240 transitions. [2019-10-13 23:18:52,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 23:18:52,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-13 23:18:52,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:52,969 INFO L225 Difference]: With dead ends: 206 [2019-10-13 23:18:52,969 INFO L226 Difference]: Without dead ends: 123 [2019-10-13 23:18:52,974 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 23:18:52,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2019-10-13 23:18:52,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2019-10-13 23:18:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2019-10-13 23:18:53,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 142 transitions. [2019-10-13 23:18:53,001 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 142 transitions. Word has length 53 [2019-10-13 23:18:53,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:53,001 INFO L462 AbstractCegarLoop]: Abstraction has 123 states and 142 transitions. [2019-10-13 23:18:53,002 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 23:18:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 142 transitions. [2019-10-13 23:18:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-13 23:18:53,004 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:53,005 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] [2019-10-13 23:18:53,005 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:53,006 INFO L82 PathProgramCache]: Analyzing trace with hash 180018834, now seen corresponding path program 1 times [2019-10-13 23:18:53,006 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:53,006 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203938605] [2019-10-13 23:18:53,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,007 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,007 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:53,200 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 23:18:53,200 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203938605] [2019-10-13 23:18:53,201 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:53,201 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:53,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733277924] [2019-10-13 23:18:53,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:53,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:53,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:53,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:53,203 INFO L87 Difference]: Start difference. First operand 123 states and 142 transitions. Second operand 7 states. [2019-10-13 23:18:53,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:53,733 INFO L93 Difference]: Finished difference Result 369 states and 443 transitions. [2019-10-13 23:18:53,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 23:18:53,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2019-10-13 23:18:53,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:53,738 INFO L225 Difference]: With dead ends: 369 [2019-10-13 23:18:53,738 INFO L226 Difference]: Without dead ends: 271 [2019-10-13 23:18:53,740 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 [2019-10-13 23:18:53,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2019-10-13 23:18:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 259. [2019-10-13 23:18:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 259 states. [2019-10-13 23:18:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 310 transitions. [2019-10-13 23:18:53,773 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 310 transitions. Word has length 57 [2019-10-13 23:18:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:53,774 INFO L462 AbstractCegarLoop]: Abstraction has 259 states and 310 transitions. [2019-10-13 23:18:53,774 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 310 transitions. [2019-10-13 23:18:53,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-13 23:18:53,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:53,778 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] [2019-10-13 23:18:53,778 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:53,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:53,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1964479830, now seen corresponding path program 1 times [2019-10-13 23:18:53,778 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:53,779 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533736698] [2019-10-13 23:18:53,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,779 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:53,779 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:53,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:53,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 23:18:53,959 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533736698] [2019-10-13 23:18:53,960 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:53,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 23:18:53,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371811070] [2019-10-13 23:18:53,962 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 23:18:53,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:53,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 23:18:53,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-13 23:18:53,966 INFO L87 Difference]: Start difference. First operand 259 states and 310 transitions. Second operand 7 states. [2019-10-13 23:18:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:54,674 INFO L93 Difference]: Finished difference Result 678 states and 875 transitions. [2019-10-13 23:18:54,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 23:18:54,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-13 23:18:54,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:54,680 INFO L225 Difference]: With dead ends: 678 [2019-10-13 23:18:54,680 INFO L226 Difference]: Without dead ends: 444 [2019-10-13 23:18:54,681 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 [2019-10-13 23:18:54,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2019-10-13 23:18:54,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 393. [2019-10-13 23:18:54,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 393 states. [2019-10-13 23:18:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 464 transitions. [2019-10-13 23:18:54,732 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 464 transitions. Word has length 61 [2019-10-13 23:18:54,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:54,733 INFO L462 AbstractCegarLoop]: Abstraction has 393 states and 464 transitions. [2019-10-13 23:18:54,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 23:18:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 464 transitions. [2019-10-13 23:18:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2019-10-13 23:18:54,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:54,736 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] [2019-10-13 23:18:54,736 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:54,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:54,737 INFO L82 PathProgramCache]: Analyzing trace with hash -247602698, now seen corresponding path program 1 times [2019-10-13 23:18:54,737 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:54,737 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415554673] [2019-10-13 23:18:54,737 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,738 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:54,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:54,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:54,950 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 23:18:54,950 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415554673] [2019-10-13 23:18:54,950 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:54,951 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 23:18:54,951 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103988791] [2019-10-13 23:18:54,951 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 23:18:54,952 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:54,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 23:18:54,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-13 23:18:54,953 INFO L87 Difference]: Start difference. First operand 393 states and 464 transitions. Second operand 12 states. [2019-10-13 23:18:55,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:55,882 INFO L93 Difference]: Finished difference Result 1170 states and 1427 transitions. [2019-10-13 23:18:55,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 23:18:55,884 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2019-10-13 23:18:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:55,890 INFO L225 Difference]: With dead ends: 1170 [2019-10-13 23:18:55,891 INFO L226 Difference]: Without dead ends: 802 [2019-10-13 23:18:55,892 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2019-10-13 23:18:55,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2019-10-13 23:18:55,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 780. [2019-10-13 23:18:55,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2019-10-13 23:18:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 941 transitions. [2019-10-13 23:18:55,959 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 941 transitions. Word has length 92 [2019-10-13 23:18:55,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:55,960 INFO L462 AbstractCegarLoop]: Abstraction has 780 states and 941 transitions. [2019-10-13 23:18:55,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 23:18:55,960 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 941 transitions. [2019-10-13 23:18:55,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2019-10-13 23:18:55,963 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:55,963 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] [2019-10-13 23:18:55,964 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:55,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:55,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1439103342, now seen corresponding path program 1 times [2019-10-13 23:18:55,964 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:55,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861270910] [2019-10-13 23:18:55,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:55,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:56,182 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 23:18:56,182 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861270910] [2019-10-13 23:18:56,183 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:18:56,183 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-13 23:18:56,184 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508780610] [2019-10-13 23:18:56,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 23:18:56,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:18:56,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 23:18:56,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:18:56,185 INFO L87 Difference]: Start difference. First operand 780 states and 941 transitions. Second operand 9 states. [2019-10-13 23:18:57,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:18:57,362 INFO L93 Difference]: Finished difference Result 2516 states and 3144 transitions. [2019-10-13 23:18:57,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-13 23:18:57,363 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2019-10-13 23:18:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:18:57,377 INFO L225 Difference]: With dead ends: 2516 [2019-10-13 23:18:57,377 INFO L226 Difference]: Without dead ends: 1923 [2019-10-13 23:18:57,380 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 [2019-10-13 23:18:57,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1923 states. [2019-10-13 23:18:57,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1923 to 1643. [2019-10-13 23:18:57,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1643 states. [2019-10-13 23:18:57,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1643 states to 1643 states and 2001 transitions. [2019-10-13 23:18:57,496 INFO L78 Accepts]: Start accepts. Automaton has 1643 states and 2001 transitions. Word has length 95 [2019-10-13 23:18:57,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:18:57,497 INFO L462 AbstractCegarLoop]: Abstraction has 1643 states and 2001 transitions. [2019-10-13 23:18:57,497 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 23:18:57,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1643 states and 2001 transitions. [2019-10-13 23:18:57,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 23:18:57,501 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:18:57,501 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:18:57,502 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:18:57,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:18:57,502 INFO L82 PathProgramCache]: Analyzing trace with hash -825514903, now seen corresponding path program 1 times [2019-10-13 23:18:57,502 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:18:57,503 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379996173] [2019-10-13 23:18:57,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,503 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:18:57,503 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:18:57,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 23:18:57,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379996173] [2019-10-13 23:18:57,737 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673585224] [2019-10-13 23:18:57,737 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 23:18:57,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:18:57,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 943 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 23:18:57,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:18:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 30 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:18:58,144 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:18:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-13 23:18:58,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [786524521] [2019-10-13 23:18:58,763 INFO L162 IcfgInterpreter]: Started Sifa with 108 locations of interest [2019-10-13 23:18:58,763 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:18:58,770 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:18:58,777 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:18:58,778 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:19:08,499 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-13 23:19:10,144 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-13 23:19:10,290 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:10,419 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:10,558 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-13 23:19:10,868 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:11,078 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:11,271 WARN L191 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:11,485 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:11,821 WARN L191 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-13 23:19:11,983 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:12,168 WARN L191 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:12,301 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:12,414 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:12,527 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-13 23:19:12,537 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-13 23:19:12,849 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 513 [2019-10-13 23:19:12,851 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-13 23:19:12,965 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:13,090 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:13,258 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:13,435 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:13,539 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:13,680 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:13,813 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:14,069 WARN L191 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:14,328 WARN L191 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-13 23:19:14,438 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:14,592 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:14,718 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:14,853 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:14,976 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:15,298 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:15,407 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,522 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:15,644 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:15,960 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,172 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:16,317 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,728 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:16,871 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,091 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,205 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,424 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,627 WARN L191 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-13 23:19:17,749 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:17,895 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,020 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,177 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,406 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:18,518 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,647 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,758 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,869 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:18,995 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:19,142 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:19,254 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:19,380 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:19,598 WARN L191 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:19,711 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:19,982 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:20,358 WARN L191 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:20,472 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:20,597 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:20,713 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:20,825 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:21,031 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,145 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,257 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,383 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:21,540 WARN L191 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,653 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:21,778 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:22,006 WARN L191 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:22,119 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,255 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:22,367 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,482 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:22,620 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:22,870 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:22,980 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,107 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,330 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:23,442 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,575 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,688 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,801 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:23,926 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:24,178 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:24,293 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,426 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,552 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,665 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:24,791 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,013 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:25,139 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,265 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,471 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:25,583 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:25,749 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:25,951 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-13 23:19:26,064 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:26,218 WARN L191 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-13 23:19:26,435 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:26,546 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,672 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:26,873 WARN L191 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:26,985 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,108 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,220 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,336 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,462 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,692 WARN L191 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:27,804 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:27,936 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,138 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 564 [2019-10-13 23:19:28,252 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,377 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,491 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,606 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,728 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-13 23:19:28,960 WARN L191 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-13 23:19:29,075 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,222 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,418 WARN L191 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:29,531 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:29,658 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-13 23:19:29,854 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-13 23:19:29,969 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-13 23:19:30,108 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 568