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_product63.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:24:12,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:24:12,454 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:24:12,466 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:24:12,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:24:12,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:24:12,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:24:12,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:24:12,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:24:12,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:24:12,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:24:12,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:24:12,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:24:12,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:24:12,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:24:12,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:24:12,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:24:12,481 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:24:12,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:24:12,487 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:24:12,489 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:24:12,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:24:12,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:24:12,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:24:12,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:24:12,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:24:12,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:24:12,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:24:12,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:24:12,504 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:24:12,505 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:24:12,505 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:24:12,506 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:24:12,507 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:24:12,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:24:12,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:24:12,510 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:24:12,510 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:24:12,511 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:24:12,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:24:12,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:24:12,516 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 03:24:12,536 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:24:12,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:24:12,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:24:12,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:24:12,539 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:24:12,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:24:12,540 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:24:12,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:24:12,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:24:12,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:24:12,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:24:12,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:24:12,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:24:12,542 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:24:12,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:24:12,542 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:24:12,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:24:12,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:24:12,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:24:12,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:24:12,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:24:12,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:24:12,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:24:12,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:24:12,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:24:12,544 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:24:12,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:24:12,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:24:12,545 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 03:24:12,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:24:12,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:24:12,839 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:24:12,840 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:24:12,841 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:24:12,841 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-10-15 03:24:12,932 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5e149e5/efb62a31f4cb4990b6de975d1ae6ecc4/FLAG99c5e5706 [2019-10-15 03:24:13,537 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:24:13,538 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product63.cil.c [2019-10-15 03:24:13,550 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5e149e5/efb62a31f4cb4990b6de975d1ae6ecc4/FLAG99c5e5706 [2019-10-15 03:24:13,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cb5e149e5/efb62a31f4cb4990b6de975d1ae6ecc4 [2019-10-15 03:24:13,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:24:13,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:24:13,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:13,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:24:13,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:24:13,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:13" (1/1) ... [2019-10-15 03:24:13,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c1e73e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:13, skipping insertion in model container [2019-10-15 03:24:13,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:24:13" (1/1) ... [2019-10-15 03:24:13,849 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:24:13,923 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:24:14,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:14,410 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:24:14,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:24:14,563 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:24:14,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14 WrapperNode [2019-10-15 03:24:14,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:24:14,564 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:24:14,564 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:24:14,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:24:14,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,628 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (1/1) ... [2019-10-15 03:24:14,653 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:24:14,653 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:24:14,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:24:14,654 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:24:14,655 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (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 03:24:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:24:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:24:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:14,728 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 03:24:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 03:24:14,729 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-15 03:24:14,730 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:24:14,731 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:24:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-15 03:24:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:24:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-15 03:24:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-15 03:24:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-15 03:24:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-15 03:24:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-15 03:24:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-15 03:24:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-15 03:24:14,733 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-15 03:24:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-15 03:24:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-15 03:24:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-15 03:24:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-15 03:24:14,734 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-15 03:24:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-15 03:24:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-15 03:24:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-15 03:24:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:14,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 03:24:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 03:24:14,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 03:24:14,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-15 03:24:14,737 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 03:24:14,738 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-15 03:24:14,739 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-15 03:24:14,740 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-15 03:24:14,741 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-10-15 03:24:14,742 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__lowWaterSensor [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 03:24:14,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 03:24:14,744 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 03:24:14,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:24:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 03:24:14,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:24:16,454 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:24:16,454 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-15 03:24:16,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:16 BoogieIcfgContainer [2019-10-15 03:24:16,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:24:16,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:24:16,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:24:16,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:24:16,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:24:13" (1/3) ... [2019-10-15 03:24:16,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e3a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:16, skipping insertion in model container [2019-10-15 03:24:16,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:24:14" (2/3) ... [2019-10-15 03:24:16,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56e3a673 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:24:16, skipping insertion in model container [2019-10-15 03:24:16,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:24:16" (3/3) ... [2019-10-15 03:24:16,466 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product63.cil.c [2019-10-15 03:24:16,476 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:24:16,485 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:24:16,497 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:24:16,535 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:24:16,536 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:24:16,536 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:24:16,536 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:24:16,538 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:24:16,538 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:24:16,538 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:24:16,539 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:24:16,568 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2019-10-15 03:24:16,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-15 03:24:16,584 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:16,585 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 03:24:16,589 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:16,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1345858530, now seen corresponding path program 1 times [2019-10-15 03:24:16,611 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:16,612 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106434736] [2019-10-15 03:24:16,612 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:16,613 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:16,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:16,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:16,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:24:16,951 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106434736] [2019-10-15 03:24:16,952 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:16,961 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:24:16,962 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139163688] [2019-10-15 03:24:16,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:24:16,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:16,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:24:16,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:24:16,986 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 2 states. [2019-10-15 03:24:17,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:17,033 INFO L93 Difference]: Finished difference Result 284 states and 349 transitions. [2019-10-15 03:24:17,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:24:17,035 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 52 [2019-10-15 03:24:17,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:17,049 INFO L225 Difference]: With dead ends: 284 [2019-10-15 03:24:17,050 INFO L226 Difference]: Without dead ends: 144 [2019-10-15 03:24:17,055 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 03:24:17,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-10-15 03:24:17,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-10-15 03:24:17,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-10-15 03:24:17,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2019-10-15 03:24:17,121 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 52 [2019-10-15 03:24:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:17,122 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2019-10-15 03:24:17,122 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:24:17,122 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2019-10-15 03:24:17,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 03:24:17,126 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,127 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 03:24:17,127 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1883787441, now seen corresponding path program 1 times [2019-10-15 03:24:17,128 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,128 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437016008] [2019-10-15 03:24:17,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:17,256 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 03:24:17,256 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437016008] [2019-10-15 03:24:17,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:17,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:24:17,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415377476] [2019-10-15 03:24:17,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:24:17,261 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:17,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:24:17,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:24:17,262 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand 3 states. [2019-10-15 03:24:17,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:17,303 INFO L93 Difference]: Finished difference Result 235 states and 277 transitions. [2019-10-15 03:24:17,308 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:24:17,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 03:24:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:17,311 INFO L225 Difference]: With dead ends: 235 [2019-10-15 03:24:17,312 INFO L226 Difference]: Without dead ends: 136 [2019-10-15 03:24:17,314 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 03:24:17,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-10-15 03:24:17,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2019-10-15 03:24:17,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2019-10-15 03:24:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 159 transitions. [2019-10-15 03:24:17,350 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 159 transitions. Word has length 53 [2019-10-15 03:24:17,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:17,351 INFO L462 AbstractCegarLoop]: Abstraction has 136 states and 159 transitions. [2019-10-15 03:24:17,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:24:17,351 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 159 transitions. [2019-10-15 03:24:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-15 03:24:17,354 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:17,357 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] [2019-10-15 03:24:17,357 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:17,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:17,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1508514586, now seen corresponding path program 1 times [2019-10-15 03:24:17,358 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:17,358 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53843018] [2019-10-15 03:24:17,358 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,359 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:17,359 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:17,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:17,531 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 03:24:17,532 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53843018] [2019-10-15 03:24:17,532 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:17,532 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:24:17,533 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967608474] [2019-10-15 03:24:17,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:24:17,533 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:17,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:24:17,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:24:17,534 INFO L87 Difference]: Start difference. First operand 136 states and 159 transitions. Second operand 7 states. [2019-10-15 03:24:18,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:18,112 INFO L93 Difference]: Finished difference Result 407 states and 491 transitions. [2019-10-15 03:24:18,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:24:18,113 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2019-10-15 03:24:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:18,125 INFO L225 Difference]: With dead ends: 407 [2019-10-15 03:24:18,126 INFO L226 Difference]: Without dead ends: 296 [2019-10-15 03:24:18,131 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 03:24:18,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2019-10-15 03:24:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 288. [2019-10-15 03:24:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-10-15 03:24:18,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 347 transitions. [2019-10-15 03:24:18,206 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 347 transitions. Word has length 56 [2019-10-15 03:24:18,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:18,206 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 347 transitions. [2019-10-15 03:24:18,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:24:18,207 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 347 transitions. [2019-10-15 03:24:18,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2019-10-15 03:24:18,217 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:18,217 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 03:24:18,217 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:18,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1554215991, now seen corresponding path program 1 times [2019-10-15 03:24:18,218 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:18,218 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104524210] [2019-10-15 03:24:18,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,218 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:18,219 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:18,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:18,396 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 03:24:18,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104524210] [2019-10-15 03:24:18,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:18,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 03:24:18,397 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457985745] [2019-10-15 03:24:18,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 03:24:18,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:18,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 03:24:18,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:24:18,399 INFO L87 Difference]: Start difference. First operand 288 states and 347 transitions. Second operand 7 states. [2019-10-15 03:24:19,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:19,206 INFO L93 Difference]: Finished difference Result 748 states and 968 transitions. [2019-10-15 03:24:19,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 03:24:19,207 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 61 [2019-10-15 03:24:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:19,213 INFO L225 Difference]: With dead ends: 748 [2019-10-15 03:24:19,213 INFO L226 Difference]: Without dead ends: 485 [2019-10-15 03:24:19,215 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 03:24:19,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 485 states. [2019-10-15 03:24:19,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 485 to 435. [2019-10-15 03:24:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-15 03:24:19,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 516 transitions. [2019-10-15 03:24:19,289 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 516 transitions. Word has length 61 [2019-10-15 03:24:19,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:19,291 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 516 transitions. [2019-10-15 03:24:19,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 03:24:19,291 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 516 transitions. [2019-10-15 03:24:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 03:24:19,295 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:19,296 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] [2019-10-15 03:24:19,296 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:19,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:19,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1947773125, now seen corresponding path program 1 times [2019-10-15 03:24:19,297 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:19,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331559150] [2019-10-15 03:24:19,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,298 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:19,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:19,638 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 03:24:19,638 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331559150] [2019-10-15 03:24:19,639 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:19,639 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-15 03:24:19,639 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99108564] [2019-10-15 03:24:19,640 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 03:24:19,640 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:19,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 03:24:19,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-10-15 03:24:19,641 INFO L87 Difference]: Start difference. First operand 435 states and 516 transitions. Second operand 12 states. [2019-10-15 03:24:20,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:20,595 INFO L93 Difference]: Finished difference Result 1265 states and 1552 transitions. [2019-10-15 03:24:20,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-15 03:24:20,595 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 96 [2019-10-15 03:24:20,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:20,607 INFO L225 Difference]: With dead ends: 1265 [2019-10-15 03:24:20,608 INFO L226 Difference]: Without dead ends: 855 [2019-10-15 03:24:20,610 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 03:24:20,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2019-10-15 03:24:20,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 833. [2019-10-15 03:24:20,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 833 states. [2019-10-15 03:24:20,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1010 transitions. [2019-10-15 03:24:20,702 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1010 transitions. Word has length 96 [2019-10-15 03:24:20,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:20,704 INFO L462 AbstractCegarLoop]: Abstraction has 833 states and 1010 transitions. [2019-10-15 03:24:20,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 03:24:20,704 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1010 transitions. [2019-10-15 03:24:20,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2019-10-15 03:24:20,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:20,710 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] [2019-10-15 03:24:20,710 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:20,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:20,711 INFO L82 PathProgramCache]: Analyzing trace with hash 459318484, now seen corresponding path program 1 times [2019-10-15 03:24:20,711 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:20,711 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670662139] [2019-10-15 03:24:20,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:20,712 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:20,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:20,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:20,952 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 03:24:20,952 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670662139] [2019-10-15 03:24:20,953 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:24:20,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:24:20,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097739798] [2019-10-15 03:24:20,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:24:20,954 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:24:20,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:24:20,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:24:20,955 INFO L87 Difference]: Start difference. First operand 833 states and 1010 transitions. Second operand 9 states. [2019-10-15 03:24:22,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:24:22,167 INFO L93 Difference]: Finished difference Result 2673 states and 3353 transitions. [2019-10-15 03:24:22,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-15 03:24:22,168 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 99 [2019-10-15 03:24:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:24:22,183 INFO L225 Difference]: With dead ends: 2673 [2019-10-15 03:24:22,183 INFO L226 Difference]: Without dead ends: 2034 [2019-10-15 03:24:22,186 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2019-10-15 03:24:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2034 states. [2019-10-15 03:24:22,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2034 to 1750. [2019-10-15 03:24:22,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1750 states. [2019-10-15 03:24:22,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1750 states to 1750 states and 2140 transitions. [2019-10-15 03:24:22,329 INFO L78 Accepts]: Start accepts. Automaton has 1750 states and 2140 transitions. Word has length 99 [2019-10-15 03:24:22,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:24:22,331 INFO L462 AbstractCegarLoop]: Abstraction has 1750 states and 2140 transitions. [2019-10-15 03:24:22,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:24:22,332 INFO L276 IsEmpty]: Start isEmpty. Operand 1750 states and 2140 transitions. [2019-10-15 03:24:22,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2019-10-15 03:24:22,346 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:24:22,346 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:24:22,347 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:24:22,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:24:22,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1567982084, now seen corresponding path program 1 times [2019-10-15 03:24:22,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:24:22,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867513260] [2019-10-15 03:24:22,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:22,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:24:22,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:24:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:22,629 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:24:22,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867513260] [2019-10-15 03:24:22,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521129182] [2019-10-15 03:24:22,631 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 03:24:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:24:22,919 INFO L256 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 03:24:22,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:24:23,152 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:24:23,152 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:24:23,702 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-15 03:24:23,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1997870425] [2019-10-15 03:24:23,754 INFO L162 IcfgInterpreter]: Started Sifa with 122 locations of interest [2019-10-15 03:24:23,754 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:24:23,766 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:24:23,782 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:24:23,783 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:24:32,064 WARN L191 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-10-15 03:24:33,630 WARN L191 SmtUtils]: Spent 424.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-15 03:24:33,800 WARN L191 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:33,933 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:34,071 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 474 [2019-10-15 03:24:34,306 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:34,538 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:34,729 WARN L191 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:34,910 WARN L191 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:35,287 WARN L191 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 546 DAG size of output: 544 [2019-10-15 03:24:35,461 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:35,605 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:35,778 WARN L191 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:35,890 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:36,006 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-15 03:24:36,015 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 187 for LOIs [2019-10-15 03:24:36,225 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 546 for LOIs [2019-10-15 03:24:36,370 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:36,485 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:36,626 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:36,743 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:36,876 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:37,019 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:37,138 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:37,248 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:37,371 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:37,632 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 566 DAG size of output: 546 [2019-10-15 03:24:37,878 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:37,988 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:38,091 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:38,251 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:38,452 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:38,574 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:38,790 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:38,950 WARN L191 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:39,153 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:39,278 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:39,478 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:39,624 WARN L191 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:39,829 WARN L191 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:39,952 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:40,155 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,280 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:40,399 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,519 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,644 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:40,854 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-15 03:24:40,978 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,117 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,231 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,373 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,523 WARN L191 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,641 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,780 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:41,898 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,019 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,148 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:42,305 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:42,444 WARN L191 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:42,572 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:42,800 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:42,921 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:43,202 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:43,509 WARN L191 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:43,648 WARN L191 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:43,776 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:43,893 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:44,008 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:44,149 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:44,265 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:44,382 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:44,511 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:44,691 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:44,808 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:44,940 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:45,154 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 568 [2019-10-15 03:24:45,271 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:45,401 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:45,517 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:45,632 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:45,763 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:45,895 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,011 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,156 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,285 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,399 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,533 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,652 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,772 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:46,909 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:47,153 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:47,270 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:47,410 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:47,610 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:47,741 WARN L191 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:47,872 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:48,084 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 566 [2019-10-15 03:24:48,202 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 566 [2019-10-15 03:24:48,328 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:48,533 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 575 DAG size of output: 568 [2019-10-15 03:24:48,647 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:48,778 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:48,985 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 577 DAG size of output: 570 [2019-10-15 03:24:49,103 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:49,258 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 570 [2019-10-15 03:24:49,453 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,632 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,760 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,876 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:49,992 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,119 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,233 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,346 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,467 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,598 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,711 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,839 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:50,960 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,071 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,198 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,310 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,423 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,544 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:51,786 WARN L191 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:51,908 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:52,053 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:52,435 WARN L191 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 570 DAG size of output: 568 [2019-10-15 03:24:52,550 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:52,679 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 568 [2019-10-15 03:24:52,801 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:52,913 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,036 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,150 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,266 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,405 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,653 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:53,926 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 564 [2019-10-15 03:24:54,076 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 564