java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 15:19:18,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 15:19:18,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 15:19:18,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 15:19:18,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 15:19:18,322 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 15:19:18,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 15:19:18,325 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 15:19:18,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 15:19:18,336 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 15:19:18,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 15:19:18,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 15:19:18,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 15:19:18,343 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 15:19:18,344 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 15:19:18,347 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 15:19:18,348 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 15:19:18,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 15:19:18,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 15:19:18,359 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 15:19:18,361 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 15:19:18,362 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 15:19:18,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 15:19:18,366 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 15:19:18,370 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 15:19:18,370 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 15:19:18,370 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 15:19:18,372 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 15:19:18,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 15:19:18,376 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 15:19:18,376 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 15:19:18,378 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 15:19:18,379 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 15:19:18,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 15:19:18,384 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 15:19:18,385 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 15:19:18,385 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 15:19:18,386 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 15:19:18,386 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 15:19:18,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 15:19:18,391 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 15:19:18,392 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 [2019-10-07 15:19:18,417 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 15:19:18,417 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 15:19:18,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 15:19:18,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 15:19:18,420 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 15:19:18,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 15:19:18,421 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 15:19:18,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 15:19:18,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 15:19:18,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 15:19:18,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 15:19:18,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 15:19:18,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 15:19:18,424 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 15:19:18,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 15:19:18,424 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 15:19:18,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 15:19:18,425 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 15:19:18,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 15:19:18,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 15:19:18,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 15:19:18,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 15:19:18,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 15:19:18,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 15:19:18,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 15:19:18,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 15:19:18,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 15:19:18,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 15:19:18,427 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 [2019-10-07 15:19:18,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 15:19:18,774 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 15:19:18,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 15:19:18,779 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 15:19:18,779 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 15:19:18,780 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-07 15:19:18,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5d93b3e/adefaa275a70424a8244706c76b2157b/FLAG2ebdb3fe1 [2019-10-07 15:19:19,424 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 15:19:19,425 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec4_product51.cil.c [2019-10-07 15:19:19,440 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5d93b3e/adefaa275a70424a8244706c76b2157b/FLAG2ebdb3fe1 [2019-10-07 15:19:19,730 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd5d93b3e/adefaa275a70424a8244706c76b2157b [2019-10-07 15:19:19,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 15:19:19,744 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 15:19:19,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:19,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 15:19:19,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 15:19:19,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:19" (1/1) ... [2019-10-07 15:19:19,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103d845f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:19, skipping insertion in model container [2019-10-07 15:19:19,756 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:19:19" (1/1) ... [2019-10-07 15:19:19,765 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 15:19:19,837 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 15:19:20,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:20,333 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 15:19:20,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 15:19:20,485 INFO L192 MainTranslator]: Completed translation [2019-10-07 15:19:20,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20 WrapperNode [2019-10-07 15:19:20,486 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 15:19:20,487 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 15:19:20,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 15:19:20,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 15:19:20,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,522 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,567 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (1/1) ... [2019-10-07 15:19:20,575 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 15:19:20,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 15:19:20,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 15:19:20,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 15:19:20,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (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 [2019-10-07 15:19:20,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 15:19:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 15:19:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 15:19:20,646 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 15:19:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 15:19:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 15:19:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 15:19:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:20,647 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-10-07 15:19:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-10-07 15:19:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-10-07 15:19:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-10-07 15:19:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-10-07 15:19:20,648 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-10-07 15:19:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-10-07 15:19:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterSensorDry [2019-10-07 15:19:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 15:19:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 15:19:20,649 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 15:19:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 15:19:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 15:19:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-10-07 15:19:20,650 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-10-07 15:19:20,651 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-10-07 15:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-10-07 15:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure isLowWaterLevel [2019-10-07 15:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-10-07 15:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 15:19:20,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 15:19:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 15:19:20,653 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 15:19:20,654 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 15:19:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 15:19:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 15:19:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 15:19:20,654 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 15:19:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 15:19:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-10-07 15:19:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-10-07 15:19:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-10-07 15:19:20,655 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 15:19:20,656 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 15:19:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 15:19:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-10-07 15:19:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-10-07 15:19:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification4_spec__1 [2019-10-07 15:19:20,657 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-10-07 15:19:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-10-07 15:19:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-10-07 15:19:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-10-07 15:19:20,658 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterSensorDry [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-10-07 15:19:20,659 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-10-07 15:19:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-10-07 15:19:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-10-07 15:19:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2019-10-07 15:19:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isLowWaterLevel [2019-10-07 15:19:20,660 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 15:19:20,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 15:19:20,662 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 15:19:20,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 15:19:20,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 15:19:22,428 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 15:19:22,428 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-07 15:19:22,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:22 BoogieIcfgContainer [2019-10-07 15:19:22,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 15:19:22,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 15:19:22,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 15:19:22,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 15:19:22,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:19:19" (1/3) ... [2019-10-07 15:19:22,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da84960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:22, skipping insertion in model container [2019-10-07 15:19:22,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:19:20" (2/3) ... [2019-10-07 15:19:22,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da84960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:19:22, skipping insertion in model container [2019-10-07 15:19:22,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:19:22" (3/3) ... [2019-10-07 15:19:22,439 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product51.cil.c [2019-10-07 15:19:22,449 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 15:19:22,457 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 15:19:22,469 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 15:19:22,496 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 15:19:22,497 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 15:19:22,497 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 15:19:22,497 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 15:19:22,497 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 15:19:22,497 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 15:19:22,498 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 15:19:22,498 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 15:19:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2019-10-07 15:19:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-07 15:19:22,530 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:22,531 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:22,533 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:22,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 659053163, now seen corresponding path program 1 times [2019-10-07 15:19:22,551 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:22,552 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:22,552 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:22,552 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:22,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:22,925 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:22,925 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:22,925 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-07 15:19:22,930 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-07 15:19:22,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-07 15:19:22,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-07 15:19:22,948 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 2 states. [2019-10-07 15:19:22,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:22,993 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2019-10-07 15:19:22,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-07 15:19:22,995 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2019-10-07 15:19:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:23,011 INFO L225 Difference]: With dead ends: 225 [2019-10-07 15:19:23,011 INFO L226 Difference]: Without dead ends: 113 [2019-10-07 15:19:23,016 INFO L606 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 [2019-10-07 15:19:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-07 15:19:23,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2019-10-07 15:19:23,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-07 15:19:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2019-10-07 15:19:23,083 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 42 [2019-10-07 15:19:23,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:23,083 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2019-10-07 15:19:23,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-07 15:19:23,084 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2019-10-07 15:19:23,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-07 15:19:23,087 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:23,088 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:23,088 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:23,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:23,089 INFO L82 PathProgramCache]: Analyzing trace with hash -690893461, now seen corresponding path program 1 times [2019-10-07 15:19:23,089 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:23,089 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,090 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,090 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:23,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:23,235 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,236 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:23,236 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:23,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:23,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:23,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:23,239 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 3 states. [2019-10-07 15:19:23,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:23,295 INFO L93 Difference]: Finished difference Result 176 states and 202 transitions. [2019-10-07 15:19:23,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:23,297 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-07 15:19:23,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:23,305 INFO L225 Difference]: With dead ends: 176 [2019-10-07 15:19:23,305 INFO L226 Difference]: Without dead ends: 105 [2019-10-07 15:19:23,307 INFO L606 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 [2019-10-07 15:19:23,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2019-10-07 15:19:23,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2019-10-07 15:19:23,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2019-10-07 15:19:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2019-10-07 15:19:23,327 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 43 [2019-10-07 15:19:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:23,328 INFO L462 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2019-10-07 15:19:23,328 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2019-10-07 15:19:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-10-07 15:19:23,333 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:23,334 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:23,334 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:23,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1392605010, now seen corresponding path program 1 times [2019-10-07 15:19:23,335 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:23,335 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,335 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,335 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:23,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:23,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:23,570 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:23,571 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:23,571 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 15:19:23,572 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:23,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-07 15:19:23,573 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand 7 states. [2019-10-07 15:19:23,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:23,991 INFO L93 Difference]: Finished difference Result 315 states and 373 transitions. [2019-10-07 15:19:23,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 15:19:23,992 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2019-10-07 15:19:23,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:23,997 INFO L225 Difference]: With dead ends: 315 [2019-10-07 15:19:23,997 INFO L226 Difference]: Without dead ends: 232 [2019-10-07 15:19:23,998 INFO L606 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 [2019-10-07 15:19:23,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2019-10-07 15:19:24,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 224. [2019-10-07 15:19:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2019-10-07 15:19:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 265 transitions. [2019-10-07 15:19:24,050 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 265 transitions. Word has length 46 [2019-10-07 15:19:24,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:24,052 INFO L462 AbstractCegarLoop]: Abstraction has 224 states and 265 transitions. [2019-10-07 15:19:24,052 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:24,052 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 265 transitions. [2019-10-07 15:19:24,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-07 15:19:24,055 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,055 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:24,060 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,060 INFO L82 PathProgramCache]: Analyzing trace with hash -444831069, now seen corresponding path program 1 times [2019-10-07 15:19:24,061 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,061 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,061 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,061 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:24,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:24,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:24,243 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,243 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:24,244 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 15:19:24,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 15:19:24,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 15:19:24,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 15:19:24,245 INFO L87 Difference]: Start difference. First operand 224 states and 265 transitions. Second operand 10 states. [2019-10-07 15:19:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:24,895 INFO L93 Difference]: Finished difference Result 791 states and 982 transitions. [2019-10-07 15:19:24,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 15:19:24,895 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2019-10-07 15:19:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:24,901 INFO L225 Difference]: With dead ends: 791 [2019-10-07 15:19:24,902 INFO L226 Difference]: Without dead ends: 589 [2019-10-07 15:19:24,905 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2019-10-07 15:19:24,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2019-10-07 15:19:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 565. [2019-10-07 15:19:24,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 565 states. [2019-10-07 15:19:24,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 686 transitions. [2019-10-07 15:19:24,969 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 686 transitions. Word has length 51 [2019-10-07 15:19:24,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:24,970 INFO L462 AbstractCegarLoop]: Abstraction has 565 states and 686 transitions. [2019-10-07 15:19:24,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 15:19:24,970 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 686 transitions. [2019-10-07 15:19:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-07 15:19:24,974 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:24,974 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:24,975 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:24,975 INFO L82 PathProgramCache]: Analyzing trace with hash -197069387, now seen corresponding path program 1 times [2019-10-07 15:19:24,975 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:24,975 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:24,976 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,976 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:25,071 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,071 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:25,071 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 15:19:25,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 15:19:25,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 15:19:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 15:19:25,073 INFO L87 Difference]: Start difference. First operand 565 states and 686 transitions. Second operand 4 states. [2019-10-07 15:19:25,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:25,417 INFO L93 Difference]: Finished difference Result 1404 states and 1872 transitions. [2019-10-07 15:19:25,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-07 15:19:25,417 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-10-07 15:19:25,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:25,424 INFO L225 Difference]: With dead ends: 1404 [2019-10-07 15:19:25,425 INFO L226 Difference]: Without dead ends: 861 [2019-10-07 15:19:25,428 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-07 15:19:25,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2019-10-07 15:19:25,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 731. [2019-10-07 15:19:25,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-07 15:19:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 878 transitions. [2019-10-07 15:19:25,509 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 878 transitions. Word has length 54 [2019-10-07 15:19:25,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:25,511 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 878 transitions. [2019-10-07 15:19:25,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 15:19:25,512 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 878 transitions. [2019-10-07 15:19:25,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-10-07 15:19:25,516 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:25,517 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:25,517 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:25,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:25,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1222446110, now seen corresponding path program 1 times [2019-10-07 15:19:25,518 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:25,518 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,518 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,518 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:25,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,715 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 15:19:25,716 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:25,716 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:25,716 INFO L95 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 [2019-10-07 15:19:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:25,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 15:19:25,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 15:19:25,967 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 15:19:26,092 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 15:19:26,092 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2019-10-07 15:19:26,093 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 15:19:26,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 15:19:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-07 15:19:26,094 INFO L87 Difference]: Start difference. First operand 731 states and 878 transitions. Second operand 7 states. [2019-10-07 15:19:26,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,377 INFO L93 Difference]: Finished difference Result 744 states and 894 transitions. [2019-10-07 15:19:26,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 15:19:26,379 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 78 [2019-10-07 15:19:26,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,385 INFO L225 Difference]: With dead ends: 744 [2019-10-07 15:19:26,385 INFO L226 Difference]: Without dead ends: 741 [2019-10-07 15:19:26,386 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-07 15:19:26,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2019-10-07 15:19:26,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 731. [2019-10-07 15:19:26,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2019-10-07 15:19:26,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 875 transitions. [2019-10-07 15:19:26,447 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 875 transitions. Word has length 78 [2019-10-07 15:19:26,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,448 INFO L462 AbstractCegarLoop]: Abstraction has 731 states and 875 transitions. [2019-10-07 15:19:26,448 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 15:19:26,448 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 875 transitions. [2019-10-07 15:19:26,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2019-10-07 15:19:26,452 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,452 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:26,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:26,660 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1324363219, now seen corresponding path program 1 times [2019-10-07 15:19:26,661 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,661 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,662 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,662 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:26,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 15:19:26,737 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,737 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:26,737 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 15:19:26,738 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 15:19:26,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 15:19:26,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 15:19:26,739 INFO L87 Difference]: Start difference. First operand 731 states and 875 transitions. Second operand 3 states. [2019-10-07 15:19:26,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:26,815 INFO L93 Difference]: Finished difference Result 857 states and 1028 transitions. [2019-10-07 15:19:26,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 15:19:26,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2019-10-07 15:19:26,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:26,866 INFO L225 Difference]: With dead ends: 857 [2019-10-07 15:19:26,866 INFO L226 Difference]: Without dead ends: 318 [2019-10-07 15:19:26,868 INFO L606 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 [2019-10-07 15:19:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2019-10-07 15:19:26,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 318. [2019-10-07 15:19:26,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 318 states. [2019-10-07 15:19:26,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 367 transitions. [2019-10-07 15:19:26,889 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 367 transitions. Word has length 100 [2019-10-07 15:19:26,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:26,889 INFO L462 AbstractCegarLoop]: Abstraction has 318 states and 367 transitions. [2019-10-07 15:19:26,889 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 15:19:26,890 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 367 transitions. [2019-10-07 15:19:26,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 15:19:26,891 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:26,892 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 15:19:26,892 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:26,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:26,892 INFO L82 PathProgramCache]: Analyzing trace with hash -2092836145, now seen corresponding path program 1 times [2019-10-07 15:19:26,893 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:26,893 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:26,893 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,893 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:26,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:26,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,152 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-07 15:19:27,152 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,152 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 15:19:27,153 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 15:19:27,153 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 15:19:27,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 15:19:27,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 15:19:27,154 INFO L87 Difference]: Start difference. First operand 318 states and 367 transitions. Second operand 14 states. [2019-10-07 15:19:27,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 15:19:27,571 INFO L93 Difference]: Finished difference Result 587 states and 705 transitions. [2019-10-07 15:19:27,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 15:19:27,571 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 117 [2019-10-07 15:19:27,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 15:19:27,575 INFO L225 Difference]: With dead ends: 587 [2019-10-07 15:19:27,576 INFO L226 Difference]: Without dead ends: 453 [2019-10-07 15:19:27,577 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2019-10-07 15:19:27,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2019-10-07 15:19:27,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 386. [2019-10-07 15:19:27,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 386 states. [2019-10-07 15:19:27,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 450 transitions. [2019-10-07 15:19:27,602 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 450 transitions. Word has length 117 [2019-10-07 15:19:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 15:19:27,603 INFO L462 AbstractCegarLoop]: Abstraction has 386 states and 450 transitions. [2019-10-07 15:19:27,603 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 15:19:27,603 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 450 transitions. [2019-10-07 15:19:27,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2019-10-07 15:19:27,605 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 15:19:27,606 INFO L385 BasicCegarLoop]: trace histogram [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] [2019-10-07 15:19:27,606 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 15:19:27,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 15:19:27,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1372733077, now seen corresponding path program 1 times [2019-10-07 15:19:27,606 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 15:19:27,607 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 15:19:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 15:19:27,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 15:19:27,919 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 15:19:27,919 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 15:19:27,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:19:28,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 15:19:28,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 49 conjunts are in the unsatisfiable core [2019-10-07 15:19:28,151 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 15:19:28,293 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 15:19:28,400 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 15:19:28,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:28,746 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:28,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,055 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 15:19:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-07 15:19:29,261 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 15:19:29,293 INFO L162 IcfgInterpreter]: Started Sifa with 92 locations of interest [2019-10-07 15:19:29,293 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 15:19:29,301 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 15:19:29,309 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 15:19:29,310 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 15:19:39,264 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-10-07 15:19:40,986 WARN L191 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-10-07 15:19:41,132 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:41,331 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:41,506 WARN L191 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 472 [2019-10-07 15:19:41,783 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:42,007 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:42,213 WARN L191 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:42,440 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:42,763 WARN L191 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 542 DAG size of output: 540 [2019-10-07 15:19:42,933 WARN L191 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:43,091 WARN L191 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:43,200 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:43,457 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:19:43,465 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 184 for LOIs [2019-10-07 15:19:43,675 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 544 for LOIs [2019-10-07 15:19:43,781 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:43,898 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:44,057 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:44,170 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:44,278 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:44,409 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:44,549 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:44,769 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:45,023 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 544 [2019-10-07 15:19:45,300 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:45,423 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:45,636 WARN L191 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:45,991 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:46,100 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:46,317 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:46,664 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:46,977 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:47,291 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:47,403 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:47,626 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:47,941 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:48,153 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 544 [2019-10-07 15:19:48,298 WARN L191 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:48,441 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:48,551 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:48,669 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:48,890 WARN L191 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:48,999 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,137 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,268 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,376 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,495 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:49,621 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:49,732 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:49,861 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:50,131 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:50,263 WARN L191 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:50,527 WARN L191 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:50,759 WARN L191 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:50,872 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:50,993 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:51,109 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:51,223 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:51,361 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:51,478 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:51,593 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:51,725 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:51,866 WARN L191 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:51,981 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:52,107 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:52,355 WARN L191 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:19:52,485 WARN L191 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:52,763 WARN L191 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:52,930 WARN L191 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:53,045 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:53,167 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:53,403 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:53,519 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,667 WARN L191 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:53,873 WARN L191 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:53,983 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,110 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,221 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,331 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,449 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:54,684 WARN L191 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:54,808 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:54,942 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,157 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:55,275 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,400 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,513 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,625 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,762 WARN L191 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:55,972 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 565 [2019-10-07 15:19:56,087 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:56,214 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 565 [2019-10-07 15:19:56,418 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:19:56,534 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,665 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:19:56,887 WARN L191 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:56,997 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,132 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,332 WARN L191 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:57,442 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,568 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,678 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,789 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:57,907 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,119 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:58,229 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,356 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,624 WARN L191 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:19:58,734 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,855 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:58,966 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,076 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,194 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:19:59,405 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:59,529 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,653 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:19:59,865 WARN L191 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 560 [2019-10-07 15:19:59,977 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,100 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:00,306 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:00,420 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,539 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,741 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:00,850 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:00,971 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,177 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:01,296 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,480 WARN L191 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,745 WARN L191 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:01,856 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:01,986 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,097 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,207 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,325 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:02,532 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:02,642 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:02,764 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:02,958 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:03,068 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:03,190 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:03,302 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:03,413 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:03,537 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:03,733 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 558 [2019-10-07 15:20:03,843 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:03,966 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:04,161 WARN L191 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 560 [2019-10-07 15:20:04,272 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:04,396 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:04,617 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:04,727 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:04,847 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,045 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:05,155 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,277 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,387 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,504 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,624 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:05,753 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,865 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:05,993 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:06,239 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:06,349 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:06,486 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:06,674 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:06,783 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:06,902 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:07,116 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 567 DAG size of output: 560 [2019-10-07 15:20:07,228 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:07,353 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:07,555 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 562 [2019-10-07 15:20:07,667 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:07,790 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 562 [2019-10-07 15:20:08,005 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:08,118 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:08,246 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:08,456 WARN L191 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 569 DAG size of output: 567 [2019-10-07 15:20:08,570 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:08,695 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 567 [2019-10-07 15:20:08,901 WARN L191 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:09,009 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,127 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,325 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 558 DAG size of output: 556 [2019-10-07 15:20:09,433 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,560 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,669 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,779 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:09,895 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:10,096 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,208 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,331 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,445 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,557 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,690 WARN L191 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,801 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:10,915 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:11,037 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:11,241 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 562 DAG size of output: 558 [2019-10-07 15:20:11,352 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 558 [2019-10-07 15:20:11,474 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:11,477 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 544 for LOIs [2019-10-07 15:20:11,792 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:11,796 INFO L199 IcfgInterpreter]: Interpreting procedure setup with input of size 540 for LOIs [2019-10-07 15:20:11,997 WARN L191 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:12,211 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:12,419 INFO L199 IcfgInterpreter]: Interpreting procedure select_features with input of size 540 for LOIs [2019-10-07 15:20:12,521 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 540 [2019-10-07 15:20:13,032 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 544 for LOIs [2019-10-07 15:20:13,347 WARN L191 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 556 [2019-10-07 15:20:13,557 WARN L191 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 546 [2019-10-07 15:20:13,679 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 560 [2019-10-07 15:20:13,945 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:20:14,498 WARN L191 SmtUtils]: Spent 547.00 ms on a formula simplification that was a NOOP. DAG size: 559 [2019-10-07 15:20:14,826 WARN L191 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 572 DAG size of output: 572 [2019-10-07 15:20:15,245 WARN L191 SmtUtils]: Spent 417.00 ms on a formula simplification that was a NOOP. DAG size: 575 [2019-10-07 15:20:15,546 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 15:20:15,548 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:178) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:169) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 15:20:15,556 INFO L168 Benchmark]: Toolchain (without parser) took 55812.99 ms. Allocated memory was 138.4 MB in the beginning and 1.2 GB in the end (delta: 1.0 GB). Free memory was 101.1 MB in the beginning and 1.1 GB in the end (delta: -962.2 MB). Peak memory consumption was 71.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,557 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 739.10 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.9 MB in the beginning and 165.8 MB in the end (delta: -64.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,558 INFO L168 Benchmark]: Boogie Preprocessor took 88.09 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 161.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,558 INFO L168 Benchmark]: RCFGBuilder took 1855.15 ms. Allocated memory was 199.8 MB in the beginning and 233.3 MB in the end (delta: 33.6 MB). Free memory was 161.8 MB in the beginning and 143.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,559 INFO L168 Benchmark]: TraceAbstraction took 53123.25 ms. Allocated memory was 233.3 MB in the beginning and 1.2 GB in the end (delta: 938.5 MB). Free memory was 143.8 MB in the beginning and 1.1 GB in the end (delta: -919.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2019-10-07 15:20:15,561 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 739.10 ms. Allocated memory was 138.4 MB in the beginning and 199.8 MB in the end (delta: 61.3 MB). Free memory was 100.9 MB in the beginning and 165.8 MB in the end (delta: -64.9 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.09 ms. Allocated memory is still 199.8 MB. Free memory was 165.8 MB in the beginning and 161.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1855.15 ms. Allocated memory was 199.8 MB in the beginning and 233.3 MB in the end (delta: 33.6 MB). Free memory was 161.8 MB in the beginning and 143.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 81.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 53123.25 ms. Allocated memory was 233.3 MB in the beginning and 1.2 GB in the end (delta: 938.5 MB). Free memory was 143.8 MB in the beginning and 1.1 GB in the end (delta: -919.5 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...