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/elevator_spec3_product28.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 14:29:31,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 14:29:31,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 14:29:31,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 14:29:31,777 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 14:29:31,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 14:29:31,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 14:29:31,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 14:29:31,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 14:29:31,784 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 14:29:31,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 14:29:31,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 14:29:31,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 14:29:31,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 14:29:31,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 14:29:31,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 14:29:31,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 14:29:31,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 14:29:31,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 14:29:31,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 14:29:31,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 14:29:31,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 14:29:31,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 14:29:31,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 14:29:31,802 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 14:29:31,803 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 14:29:31,803 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 14:29:31,804 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 14:29:31,804 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 14:29:31,805 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 14:29:31,806 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 14:29:31,807 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 14:29:31,807 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 14:29:31,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 14:29:31,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 14:29:31,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 14:29:31,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 14:29:31,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 14:29:31,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 14:29:31,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 14:29:31,816 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 14:29:31,819 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 14:29:31,845 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 14:29:31,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 14:29:31,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 14:29:31,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 14:29:31,847 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 14:29:31,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 14:29:31,847 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 14:29:31,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 14:29:31,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 14:29:31,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 14:29:31,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 14:29:31,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 14:29:31,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 14:29:31,849 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 14:29:31,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 14:29:31,849 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 14:29:31,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 14:29:31,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 14:29:31,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 14:29:31,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 14:29:31,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 14:29:31,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 14:29:31,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 14:29:31,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 14:29:31,851 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 14:29:31,851 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 14:29:31,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 14:29:31,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 14:29:31,852 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 14:29:32,124 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 14:29:32,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 14:29:32,140 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 14:29:32,142 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 14:29:32,142 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 14:29:32,143 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-07 14:29:32,220 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deed156e4/3830f3ad708448d59aafb5b1eebb6cb2/FLAG4ac31f224 [2019-10-07 14:29:32,896 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 14:29:32,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product28.cil.c [2019-10-07 14:29:32,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deed156e4/3830f3ad708448d59aafb5b1eebb6cb2/FLAG4ac31f224 [2019-10-07 14:29:33,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/deed156e4/3830f3ad708448d59aafb5b1eebb6cb2 [2019-10-07 14:29:33,091 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 14:29:33,093 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 14:29:33,094 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 14:29:33,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 14:29:33,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 14:29:33,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:29:33" (1/1) ... [2019-10-07 14:29:33,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5cac2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:33, skipping insertion in model container [2019-10-07 14:29:33,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 02:29:33" (1/1) ... [2019-10-07 14:29:33,108 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 14:29:33,182 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 14:29:33,987 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:29:34,010 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 14:29:34,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 14:29:34,251 INFO L192 MainTranslator]: Completed translation [2019-10-07 14:29:34,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34 WrapperNode [2019-10-07 14:29:34,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 14:29:34,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 14:29:34,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 14:29:34,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 14:29:34,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (1/1) ... [2019-10-07 14:29:34,425 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 14:29:34,426 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 14:29:34,426 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 14:29:34,426 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 14:29:34,430 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (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 14:29:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 14:29:34,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 14:29:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-07 14:29:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:29:34,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:29:34,523 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2019-10-07 14:29:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure initBottomUp [2019-10-07 14:29:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2019-10-07 14:29:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base [2019-10-07 14:29:34,524 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2019-10-07 14:29:34,525 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base [2019-10-07 14:29:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight [2019-10-07 14:29:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2019-10-07 14:29:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2019-10-07 14:29:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure resetFloorButton [2019-10-07 14:29:34,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2019-10-07 14:29:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2019-10-07 14:29:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2019-10-07 14:29:34,529 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2019-10-07 14:29:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2019-10-07 14:29:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure anyStopRequested [2019-10-07 14:29:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isIdle [2019-10-07 14:29:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:29:34,530 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2019-10-07 14:29:34,531 INFO L138 BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure printState [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2019-10-07 14:29:34,532 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloor [2019-10-07 14:29:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-07 14:29:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-07 14:29:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-07 14:29:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-07 14:29:34,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-07 14:29:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-07 14:29:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-07 14:29:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2019-10-07 14:29:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2019-10-07 14:29:34,534 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2019-10-07 14:29:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07 [2019-10-07 14:29:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2019-10-07 14:29:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure aliceCall [2019-10-07 14:29:34,535 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2019-10-07 14:29:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckCall [2019-10-07 14:29:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure monicaCall [2019-10-07 14:29:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2019-10-07 14:29:34,536 INFO L138 BoogieDeclarations]: Found implementation of procedure threeTS [2019-10-07 14:29:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 14:29:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions [2019-10-07 14:29:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest_Simple [2019-10-07 14:29:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification1 [2019-10-07 14:29:34,537 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-10-07 14:29:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification3 [2019-10-07 14:29:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-07 14:29:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-10-07 14:29:34,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 14:29:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2019-10-07 14:29:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2019-10-07 14:29:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2019-10-07 14:29:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure callOnFloor [2019-10-07 14:29:34,539 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2019-10-07 14:29:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2019-10-07 14:29:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2019-10-07 14:29:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2019-10-07 14:29:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spec1 [2019-10-07 14:29:34,540 INFO L138 BoogieDeclarations]: Found implementation of procedure spec14 [2019-10-07 14:29:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-07 14:29:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-07 14:29:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-07 14:29:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-07 14:29:34,541 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-07 14:29:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 14:29:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 14:29:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-07 14:29:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2019-10-07 14:29:34,542 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2019-10-07 14:29:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2019-10-07 14:29:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1 [2019-10-07 14:29:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2 [2019-10-07 14:29:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 14:29:34,543 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2019-10-07 14:29:34,544 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure printState [2019-10-07 14:29:34,545 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2019-10-07 14:29:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed [2019-10-07 14:29:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2019-10-07 14:29:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure initBottomUp [2019-10-07 14:29:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2019-10-07 14:29:34,546 INFO L130 BoogieDeclarations]: Found specification of procedure isIdle [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloor [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight [2019-10-07 14:29:34,547 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure resetFloorButton [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure anyStopRequested [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2019-10-07 14:29:34,548 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2019-10-07 14:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2019-10-07 14:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor [2019-10-07 14:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2019-10-07 14:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure processWaitingOnFloor [2019-10-07 14:29:34,549 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 14:29:34,550 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 14:29:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-07 14:29:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 14:29:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 14:29:34,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 14:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 14:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-07 14:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 14:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-07 14:29:34,552 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-07 14:29:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 14:29:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-07 14:29:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-07 14:29:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-07 14:29:34,553 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2019-10-07 14:29:34,554 INFO L130 BoogieDeclarations]: Found specification of procedure threeTS [2019-10-07 14:29:34,560 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 14:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-07 14:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2019-10-07 14:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 14:29:34,561 INFO L130 BoogieDeclarations]: Found specification of procedure get_nondetMinMax07 [2019-10-07 14:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2019-10-07 14:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure aliceCall [2019-10-07 14:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2019-10-07 14:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure chuckCall [2019-10-07 14:29:34,562 INFO L130 BoogieDeclarations]: Found specification of procedure monicaCall [2019-10-07 14:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2019-10-07 14:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure randomSequenceOfActions [2019-10-07 14:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure runTest_Simple [2019-10-07 14:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure Specification1 [2019-10-07 14:29:34,563 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure Specification3 [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-07 14:29:34,564 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure callOnFloor [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure spec1 [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure spec14 [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-07 14:29:34,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 14:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 14:29:34,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 14:29:39,451 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 14:29:39,451 INFO L284 CfgBuilder]: Removed 10 assume(true) statements. [2019-10-07 14:29:39,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:29:39 BoogieIcfgContainer [2019-10-07 14:29:39,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 14:29:39,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 14:29:39,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 14:29:39,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 14:29:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 02:29:33" (1/3) ... [2019-10-07 14:29:39,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e0ee73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:29:39, skipping insertion in model container [2019-10-07 14:29:39,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 02:29:34" (2/3) ... [2019-10-07 14:29:39,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e0ee73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 02:29:39, skipping insertion in model container [2019-10-07 14:29:39,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 02:29:39" (3/3) ... [2019-10-07 14:29:39,461 INFO L109 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product28.cil.c [2019-10-07 14:29:39,470 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 14:29:39,479 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 14:29:39,490 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 14:29:39,520 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 14:29:39,521 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 14:29:39,521 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 14:29:39,521 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 14:29:39,521 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 14:29:39,521 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 14:29:39,521 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 14:29:39,521 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 14:29:39,553 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states. [2019-10-07 14:29:39,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-07 14:29:39,563 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:39,564 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:39,566 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:39,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:39,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1324391613, now seen corresponding path program 1 times [2019-10-07 14:29:39,581 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:39,581 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:39,582 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:39,582 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:39,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:39,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 14:29:40,362 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:40,362 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:29:40,363 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 14:29:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:40,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 2927 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:29:40,909 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:40,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 14:29:40,976 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:41,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:29:41,097 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:29:41,097 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:29:41,104 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:29:41,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:29:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:29:41,124 INFO L87 Difference]: Start difference. First operand 617 states. Second operand 3 states. [2019-10-07 14:29:41,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:41,395 INFO L93 Difference]: Finished difference Result 1355 states and 2052 transitions. [2019-10-07 14:29:41,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:29:41,397 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2019-10-07 14:29:41,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:41,429 INFO L225 Difference]: With dead ends: 1355 [2019-10-07 14:29:41,430 INFO L226 Difference]: Without dead ends: 876 [2019-10-07 14:29:41,439 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:29:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2019-10-07 14:29:41,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 863. [2019-10-07 14:29:41,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2019-10-07 14:29:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1290 transitions. [2019-10-07 14:29:41,730 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1290 transitions. Word has length 80 [2019-10-07 14:29:41,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:41,732 INFO L462 AbstractCegarLoop]: Abstraction has 863 states and 1290 transitions. [2019-10-07 14:29:41,732 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:29:41,732 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1290 transitions. [2019-10-07 14:29:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-10-07 14:29:41,748 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:41,748 INFO L385 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:41,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:41,962 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:41,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:41,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1390861368, now seen corresponding path program 1 times [2019-10-07 14:29:41,964 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:41,965 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:41,966 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:41,966 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:42,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 14:29:42,360 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:42,360 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:42,365 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 14:29:42,366 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:29:42,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:29:42,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 14:29:42,367 INFO L87 Difference]: Start difference. First operand 863 states and 1290 transitions. Second operand 3 states. [2019-10-07 14:29:42,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:42,609 INFO L93 Difference]: Finished difference Result 2513 states and 3820 transitions. [2019-10-07 14:29:42,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:29:42,610 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2019-10-07 14:29:42,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:42,636 INFO L225 Difference]: With dead ends: 2513 [2019-10-07 14:29:42,637 INFO L226 Difference]: Without dead ends: 1681 [2019-10-07 14:29:42,645 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 14:29:42,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2019-10-07 14:29:42,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1576. [2019-10-07 14:29:42,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1576 states. [2019-10-07 14:29:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2410 transitions. [2019-10-07 14:29:42,807 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2410 transitions. Word has length 81 [2019-10-07 14:29:42,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:42,810 INFO L462 AbstractCegarLoop]: Abstraction has 1576 states and 2410 transitions. [2019-10-07 14:29:42,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:29:42,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2410 transitions. [2019-10-07 14:29:42,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 14:29:42,819 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:42,819 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:42,819 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:42,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:42,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1384021838, now seen corresponding path program 1 times [2019-10-07 14:29:42,820 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:42,820 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:42,820 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:42,821 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:42,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:43,090 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:29:43,204 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:43,205 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:43,205 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-07 14:29:43,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 14:29:43,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 14:29:43,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-07 14:29:43,211 INFO L87 Difference]: Start difference. First operand 1576 states and 2410 transitions. Second operand 7 states. [2019-10-07 14:29:46,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:46,296 INFO L93 Difference]: Finished difference Result 4706 states and 7368 transitions. [2019-10-07 14:29:46,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-07 14:29:46,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 129 [2019-10-07 14:29:46,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:46,319 INFO L225 Difference]: With dead ends: 4706 [2019-10-07 14:29:46,320 INFO L226 Difference]: Without dead ends: 3161 [2019-10-07 14:29:46,328 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2019-10-07 14:29:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2019-10-07 14:29:46,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3092. [2019-10-07 14:29:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3092 states. [2019-10-07 14:29:46,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3092 states to 3092 states and 4789 transitions. [2019-10-07 14:29:46,487 INFO L78 Accepts]: Start accepts. Automaton has 3092 states and 4789 transitions. Word has length 129 [2019-10-07 14:29:46,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:46,488 INFO L462 AbstractCegarLoop]: Abstraction has 3092 states and 4789 transitions. [2019-10-07 14:29:46,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 14:29:46,488 INFO L276 IsEmpty]: Start isEmpty. Operand 3092 states and 4789 transitions. [2019-10-07 14:29:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-07 14:29:46,493 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:46,493 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:46,493 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:46,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1685858294, now seen corresponding path program 1 times [2019-10-07 14:29:46,494 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:46,494 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:46,494 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:46,495 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:46,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:46,707 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:29:46,707 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:46,708 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:29:46,708 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 14:29:47,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:47,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 3277 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-07 14:29:47,344 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:47,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:29:47,385 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-07 14:29:47,550 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 14:29:47,551 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12 [2019-10-07 14:29:47,551 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:29:47,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:29:47,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:29:47,552 INFO L87 Difference]: Start difference. First operand 3092 states and 4789 transitions. Second operand 3 states. [2019-10-07 14:29:47,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:47,758 INFO L93 Difference]: Finished difference Result 7622 states and 11992 transitions. [2019-10-07 14:29:47,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:29:47,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 129 [2019-10-07 14:29:47,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:47,796 INFO L225 Difference]: With dead ends: 7622 [2019-10-07 14:29:47,797 INFO L226 Difference]: Without dead ends: 4561 [2019-10-07 14:29:47,818 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 260 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2019-10-07 14:29:47,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4561 states. [2019-10-07 14:29:48,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4561 to 4448. [2019-10-07 14:29:48,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4448 states. [2019-10-07 14:29:48,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 6902 transitions. [2019-10-07 14:29:48,180 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 6902 transitions. Word has length 129 [2019-10-07 14:29:48,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:48,181 INFO L462 AbstractCegarLoop]: Abstraction has 4448 states and 6902 transitions. [2019-10-07 14:29:48,181 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:29:48,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 6902 transitions. [2019-10-07 14:29:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2019-10-07 14:29:48,191 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:48,192 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:48,411 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:48,412 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:48,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:48,412 INFO L82 PathProgramCache]: Analyzing trace with hash -74748577, now seen corresponding path program 1 times [2019-10-07 14:29:48,413 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:48,413 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:48,413 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:48,413 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-07 14:29:48,619 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:48,619 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:29:48,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:49,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 3289 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-07 14:29:49,184 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:29:49,301 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 14:29:49,301 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:29:49,489 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:29:49,772 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-07 14:29:49,773 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:29:49,773 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11, 7] total 20 [2019-10-07 14:29:49,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 14:29:49,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 14:29:49,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:29:49,774 INFO L87 Difference]: Start difference. First operand 4448 states and 6902 transitions. Second operand 6 states. [2019-10-07 14:29:51,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:51,315 INFO L93 Difference]: Finished difference Result 11787 states and 18629 transitions. [2019-10-07 14:29:51,316 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 14:29:51,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2019-10-07 14:29:51,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:51,376 INFO L225 Difference]: With dead ends: 11787 [2019-10-07 14:29:51,376 INFO L226 Difference]: Without dead ends: 7370 [2019-10-07 14:29:51,405 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 252 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2019-10-07 14:29:51,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2019-10-07 14:29:51,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7326. [2019-10-07 14:29:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7326 states. [2019-10-07 14:29:52,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7326 states to 7326 states and 11139 transitions. [2019-10-07 14:29:52,013 INFO L78 Accepts]: Start accepts. Automaton has 7326 states and 11139 transitions. Word has length 130 [2019-10-07 14:29:52,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:52,014 INFO L462 AbstractCegarLoop]: Abstraction has 7326 states and 11139 transitions. [2019-10-07 14:29:52,014 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 14:29:52,014 INFO L276 IsEmpty]: Start isEmpty. Operand 7326 states and 11139 transitions. [2019-10-07 14:29:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2019-10-07 14:29:52,018 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:52,018 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:52,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:29:52,237 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:52,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:52,238 INFO L82 PathProgramCache]: Analyzing trace with hash -827551714, now seen corresponding path program 1 times [2019-10-07 14:29:52,238 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:52,239 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:52,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:52,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:52,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-07 14:29:52,492 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:52,492 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:52,492 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:29:52,494 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:29:52,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:29:52,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:29:52,494 INFO L87 Difference]: Start difference. First operand 7326 states and 11139 transitions. Second operand 10 states. [2019-10-07 14:29:54,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:54,009 INFO L93 Difference]: Finished difference Result 16065 states and 24512 transitions. [2019-10-07 14:29:54,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-07 14:29:54,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 134 [2019-10-07 14:29:54,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:54,080 INFO L225 Difference]: With dead ends: 16065 [2019-10-07 14:29:54,080 INFO L226 Difference]: Without dead ends: 8770 [2019-10-07 14:29:54,124 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:29:54,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8770 states. [2019-10-07 14:29:54,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8770 to 8742. [2019-10-07 14:29:54,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8742 states. [2019-10-07 14:29:54,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8742 states to 8742 states and 13159 transitions. [2019-10-07 14:29:54,642 INFO L78 Accepts]: Start accepts. Automaton has 8742 states and 13159 transitions. Word has length 134 [2019-10-07 14:29:54,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:54,643 INFO L462 AbstractCegarLoop]: Abstraction has 8742 states and 13159 transitions. [2019-10-07 14:29:54,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:29:54,643 INFO L276 IsEmpty]: Start isEmpty. Operand 8742 states and 13159 transitions. [2019-10-07 14:29:54,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-10-07 14:29:54,648 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:54,648 INFO L385 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:29:54,648 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:54,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:54,649 INFO L82 PathProgramCache]: Analyzing trace with hash 399590605, now seen corresponding path program 1 times [2019-10-07 14:29:54,649 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:54,649 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:54,650 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:54,650 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:54,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:29:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-07 14:29:54,899 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:54,899 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:29:54,899 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:29:54,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:29:54,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:29:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:29:54,901 INFO L87 Difference]: Start difference. First operand 8742 states and 13159 transitions. Second operand 10 states. [2019-10-07 14:29:58,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:29:58,731 INFO L93 Difference]: Finished difference Result 28720 states and 45113 transitions. [2019-10-07 14:29:58,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-07 14:29:58,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 135 [2019-10-07 14:29:58,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:29:58,857 INFO L225 Difference]: With dead ends: 28720 [2019-10-07 14:29:58,857 INFO L226 Difference]: Without dead ends: 20009 [2019-10-07 14:29:58,903 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2019-10-07 14:29:58,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20009 states. [2019-10-07 14:29:59,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20009 to 19652. [2019-10-07 14:29:59,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19652 states. [2019-10-07 14:29:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19652 states to 19652 states and 30347 transitions. [2019-10-07 14:29:59,845 INFO L78 Accepts]: Start accepts. Automaton has 19652 states and 30347 transitions. Word has length 135 [2019-10-07 14:29:59,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:29:59,847 INFO L462 AbstractCegarLoop]: Abstraction has 19652 states and 30347 transitions. [2019-10-07 14:29:59,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:29:59,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19652 states and 30347 transitions. [2019-10-07 14:29:59,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-10-07 14:29:59,854 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:29:59,854 INFO L385 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:29:59,855 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:29:59,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:29:59,855 INFO L82 PathProgramCache]: Analyzing trace with hash -2144386018, now seen corresponding path program 1 times [2019-10-07 14:29:59,855 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:29:59,856 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:29:59,856 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:59,856 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:29:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:29:59,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:00,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-07 14:30:00,224 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:00,225 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:00,230 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-10-07 14:30:00,231 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-07 14:30:00,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-07 14:30:00,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2019-10-07 14:30:00,232 INFO L87 Difference]: Start difference. First operand 19652 states and 30347 transitions. Second operand 16 states. [2019-10-07 14:30:12,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:12,578 INFO L93 Difference]: Finished difference Result 56493 states and 92511 transitions. [2019-10-07 14:30:12,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-10-07 14:30:12,579 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 141 [2019-10-07 14:30:12,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:12,801 INFO L225 Difference]: With dead ends: 56493 [2019-10-07 14:30:12,801 INFO L226 Difference]: Without dead ends: 39879 [2019-10-07 14:30:12,874 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1230, Unknown=0, NotChecked=0, Total=1482 [2019-10-07 14:30:12,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39879 states. [2019-10-07 14:30:14,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39879 to 37653. [2019-10-07 14:30:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37653 states. [2019-10-07 14:30:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37653 states to 37653 states and 58978 transitions. [2019-10-07 14:30:14,793 INFO L78 Accepts]: Start accepts. Automaton has 37653 states and 58978 transitions. Word has length 141 [2019-10-07 14:30:14,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:14,794 INFO L462 AbstractCegarLoop]: Abstraction has 37653 states and 58978 transitions. [2019-10-07 14:30:14,794 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-07 14:30:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 37653 states and 58978 transitions. [2019-10-07 14:30:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2019-10-07 14:30:14,800 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:14,800 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:14,801 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:14,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:14,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1144894314, now seen corresponding path program 1 times [2019-10-07 14:30:14,801 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:14,801 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:14,802 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:14,802 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:14,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:15,039 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 14:30:15,039 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:15,039 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:15,040 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-07 14:30:15,040 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 14:30:15,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 14:30:15,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2019-10-07 14:30:15,041 INFO L87 Difference]: Start difference. First operand 37653 states and 58978 transitions. Second operand 10 states. [2019-10-07 14:30:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:22,064 INFO L93 Difference]: Finished difference Result 56765 states and 92877 transitions. [2019-10-07 14:30:22,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:30:22,065 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 168 [2019-10-07 14:30:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:22,277 INFO L225 Difference]: With dead ends: 56765 [2019-10-07 14:30:22,277 INFO L226 Difference]: Without dead ends: 39702 [2019-10-07 14:30:22,360 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2019-10-07 14:30:22,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39702 states. [2019-10-07 14:30:23,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39702 to 37717. [2019-10-07 14:30:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37717 states. [2019-10-07 14:30:24,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37717 states to 37717 states and 58864 transitions. [2019-10-07 14:30:24,032 INFO L78 Accepts]: Start accepts. Automaton has 37717 states and 58864 transitions. Word has length 168 [2019-10-07 14:30:24,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:24,033 INFO L462 AbstractCegarLoop]: Abstraction has 37717 states and 58864 transitions. [2019-10-07 14:30:24,033 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 14:30:24,033 INFO L276 IsEmpty]: Start isEmpty. Operand 37717 states and 58864 transitions. [2019-10-07 14:30:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-07 14:30:24,042 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:24,042 INFO L385 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:24,043 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:24,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:24,043 INFO L82 PathProgramCache]: Analyzing trace with hash -761495044, now seen corresponding path program 1 times [2019-10-07 14:30:24,043 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:24,044 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:24,044 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:24,044 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:24,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:24,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-10-07 14:30:24,311 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:24,311 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 14:30:24,311 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2019-10-07 14:30:24,312 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-07 14:30:24,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-07 14:30:24,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2019-10-07 14:30:24,313 INFO L87 Difference]: Start difference. First operand 37717 states and 58864 transitions. Second operand 14 states. [2019-10-07 14:30:37,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:37,874 INFO L93 Difference]: Finished difference Result 74645 states and 122428 transitions. [2019-10-07 14:30:37,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-10-07 14:30:37,875 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 172 [2019-10-07 14:30:37,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:38,228 INFO L225 Difference]: With dead ends: 74645 [2019-10-07 14:30:38,229 INFO L226 Difference]: Without dead ends: 74610 [2019-10-07 14:30:38,276 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=238, Invalid=1654, Unknown=0, NotChecked=0, Total=1892 [2019-10-07 14:30:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74610 states. [2019-10-07 14:30:41,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74610 to 71355. [2019-10-07 14:30:41,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71355 states. [2019-10-07 14:30:41,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71355 states to 71355 states and 111831 transitions. [2019-10-07 14:30:41,647 INFO L78 Accepts]: Start accepts. Automaton has 71355 states and 111831 transitions. Word has length 172 [2019-10-07 14:30:41,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:41,647 INFO L462 AbstractCegarLoop]: Abstraction has 71355 states and 111831 transitions. [2019-10-07 14:30:41,647 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-07 14:30:41,648 INFO L276 IsEmpty]: Start isEmpty. Operand 71355 states and 111831 transitions. [2019-10-07 14:30:41,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2019-10-07 14:30:41,667 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:41,667 INFO L385 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:30:41,667 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:41,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:41,668 INFO L82 PathProgramCache]: Analyzing trace with hash 928848231, now seen corresponding path program 1 times [2019-10-07 14:30:41,668 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:41,668 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:41,668 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:41,669 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:41,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:42,017 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2019-10-07 14:30:42,017 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:42,017 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:42,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:42,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 4925 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-07 14:30:42,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:42,948 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-07 14:30:42,948 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-10-07 14:30:43,772 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:43,772 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13, 4] total 15 [2019-10-07 14:30:43,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 14:30:43,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 14:30:43,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:30:43,774 INFO L87 Difference]: Start difference. First operand 71355 states and 111831 transitions. Second operand 3 states. [2019-10-07 14:30:48,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:30:48,194 INFO L93 Difference]: Finished difference Result 165371 states and 268126 transitions. [2019-10-07 14:30:48,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 14:30:48,194 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 346 [2019-10-07 14:30:48,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:30:48,716 INFO L225 Difference]: With dead ends: 165371 [2019-10-07 14:30:48,716 INFO L226 Difference]: Without dead ends: 94047 [2019-10-07 14:30:48,956 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 706 GetRequests, 693 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2019-10-07 14:30:49,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94047 states. [2019-10-07 14:30:52,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94047 to 92642. [2019-10-07 14:30:52,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92642 states. [2019-10-07 14:30:52,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92642 states to 92642 states and 145719 transitions. [2019-10-07 14:30:52,571 INFO L78 Accepts]: Start accepts. Automaton has 92642 states and 145719 transitions. Word has length 346 [2019-10-07 14:30:52,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:30:52,572 INFO L462 AbstractCegarLoop]: Abstraction has 92642 states and 145719 transitions. [2019-10-07 14:30:52,572 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 14:30:52,572 INFO L276 IsEmpty]: Start isEmpty. Operand 92642 states and 145719 transitions. [2019-10-07 14:30:52,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2019-10-07 14:30:52,590 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:30:52,591 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-07 14:30:52,799 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:52,800 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:30:52,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:30:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash -977125925, now seen corresponding path program 1 times [2019-10-07 14:30:52,801 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:30:52,801 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:52,801 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:52,802 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:30:52,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:30:52,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-07 14:30:53,043 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:30:53,043 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:30:53,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:30:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:30:53,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 3919 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-07 14:30:53,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:30:53,870 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-10-07 14:30:53,870 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:30:54,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 14:30:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2019-10-07 14:30:54,401 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 14:30:54,401 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 24 [2019-10-07 14:30:54,405 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 14:30:54,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 14:30:54,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2019-10-07 14:30:54,406 INFO L87 Difference]: Start difference. First operand 92642 states and 145719 transitions. Second operand 9 states. [2019-10-07 14:31:07,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 14:31:07,920 INFO L93 Difference]: Finished difference Result 248181 states and 398673 transitions. [2019-10-07 14:31:07,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-07 14:31:07,921 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 211 [2019-10-07 14:31:07,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 14:31:08,574 INFO L225 Difference]: With dead ends: 248181 [2019-10-07 14:31:08,574 INFO L226 Difference]: Without dead ends: 155570 [2019-10-07 14:31:08,766 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 453 GetRequests, 412 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2019-10-07 14:31:08,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155570 states. [2019-10-07 14:31:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155570 to 150348. [2019-10-07 14:31:17,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150348 states. [2019-10-07 14:31:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150348 states to 150348 states and 235449 transitions. [2019-10-07 14:31:17,743 INFO L78 Accepts]: Start accepts. Automaton has 150348 states and 235449 transitions. Word has length 211 [2019-10-07 14:31:17,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 14:31:17,743 INFO L462 AbstractCegarLoop]: Abstraction has 150348 states and 235449 transitions. [2019-10-07 14:31:17,743 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 14:31:17,743 INFO L276 IsEmpty]: Start isEmpty. Operand 150348 states and 235449 transitions. [2019-10-07 14:31:17,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-07 14:31:17,767 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 14:31:17,767 INFO L385 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 14:31:17,975 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:17,975 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 14:31:17,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 14:31:17,976 INFO L82 PathProgramCache]: Analyzing trace with hash -438095938, now seen corresponding path program 1 times [2019-10-07 14:31:17,977 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 14:31:17,977 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:17,977 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:17,978 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 14:31:17,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 14:31:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:18,177 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2019-10-07 14:31:18,178 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 14:31:18,178 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 14:31:18,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:31:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 14:31:18,920 INFO L256 TraceCheckSpWp]: Trace formula consists of 3977 conjuncts, 25 conjunts are in the unsatisfiable core [2019-10-07 14:31:18,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 14:31:19,093 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 107 proven. 1 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-10-07 14:31:19,093 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 14:31:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-07 14:31:19,702 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 14:31:19,731 INFO L162 IcfgInterpreter]: Started Sifa with 140 locations of interest [2019-10-07 14:31:19,732 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 14:31:19,738 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 14:31:19,745 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 14:31:19,746 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 14:32:07,355 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 769 [2019-10-07 14:32:12,963 WARN L191 SmtUtils]: Spent 3.14 s on a formula simplification. DAG size of input: 430 DAG size of output: 347 [2019-10-07 14:32:13,368 WARN L191 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 14:32:13,699 WARN L191 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 14:32:13,934 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 862 [2019-10-07 14:32:14,484 WARN L191 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:14,985 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:15,448 WARN L191 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:16,203 WARN L191 SmtUtils]: Spent 697.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:17,089 WARN L191 SmtUtils]: Spent 851.00 ms on a formula simplification. DAG size of input: 1050 DAG size of output: 1048 [2019-10-07 14:32:17,552 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:18,085 WARN L191 SmtUtils]: Spent 468.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:18,552 WARN L191 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:19,232 WARN L191 SmtUtils]: Spent 678.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:19,742 WARN L191 SmtUtils]: Spent 461.00 ms on a formula simplification that was a NOOP. DAG size: 1048 [2019-10-07 14:32:19,761 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 388 for LOIs [2019-10-07 14:32:19,954 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 737 [2019-10-07 14:32:20,061 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 737 [2019-10-07 14:32:20,409 WARN L191 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 923 [2019-10-07 14:32:20,411 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1094 for LOIs [2019-10-07 14:32:20,868 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:21,326 WARN L191 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:21,443 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:22,387 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:22,850 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:23,306 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:23,430 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:24,166 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:24,637 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:25,297 WARN L191 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:25,542 WARN L191 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:26,356 WARN L191 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:27,199 WARN L191 SmtUtils]: Spent 817.00 ms on a formula simplification. DAG size of input: 1258 DAG size of output: 1094 [2019-10-07 14:32:27,647 WARN L191 SmtUtils]: Spent 444.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:28,006 WARN L191 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:28,754 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:29,217 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:29,674 WARN L191 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:29,789 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:30,531 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:31,197 WARN L191 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:31,646 WARN L191 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:31,760 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:32,501 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:32,955 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:33,414 WARN L191 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:33,530 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:34,475 WARN L191 SmtUtils]: Spent 943.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:34,919 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:35,362 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:35,474 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:36,205 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:36,865 WARN L191 SmtUtils]: Spent 656.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:37,309 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:37,422 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:38,147 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:38,591 WARN L191 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:39,031 WARN L191 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:39,145 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:40,088 WARN L191 SmtUtils]: Spent 941.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:40,531 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:40,974 WARN L191 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:41,086 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:41,820 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:42,265 WARN L191 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:42,929 WARN L191 SmtUtils]: Spent 661.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:43,041 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:43,784 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:44,225 WARN L191 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:44,675 WARN L191 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 1094 [2019-10-07 14:32:44,788 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:45,740 WARN L191 SmtUtils]: Spent 951.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:46,531 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:47,275 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:47,395 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:48,136 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:50,338 WARN L191 SmtUtils]: Spent 2.19 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:32:51,074 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:51,196 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:52,140 WARN L191 SmtUtils]: Spent 942.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:52,885 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:53,633 WARN L191 SmtUtils]: Spent 745.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:53,749 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:32:54,486 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:32:55,853 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:32:56,597 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:32:56,713 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:32:57,446 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:01,923 WARN L191 SmtUtils]: Spent 4.46 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:02,662 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:02,784 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:03,527 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:04,283 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:05,032 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:05,147 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:05,887 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:06,637 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:33:07,384 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:33:07,502 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:08,258 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:09,006 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:09,757 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:09,877 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:10,622 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:11,395 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:12,144 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:12,263 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:13,027 WARN L191 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:14,312 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:33:15,051 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:15,176 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:15,921 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:16,677 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:17,423 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:17,536 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:18,280 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:19,634 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:20,361 WARN L191 SmtUtils]: Spent 724.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:20,522 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:21,244 WARN L191 SmtUtils]: Spent 720.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:22,577 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:23,320 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:23,443 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:24,185 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:24,940 WARN L191 SmtUtils]: Spent 753.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:25,681 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:25,801 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:26,539 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:27,306 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:28,051 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:28,173 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:28,922 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:29,979 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:30,739 WARN L191 SmtUtils]: Spent 756.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:30,862 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:31,612 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:32,355 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:33,097 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:33,212 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:33,957 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:35,239 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1267 DAG size of output: 1260 [2019-10-07 14:33:35,971 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:36,091 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:36,830 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:38,184 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1269 DAG size of output: 1262 [2019-10-07 14:33:38,929 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:39,049 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:39,797 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:33:41,145 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:41,888 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:42,007 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:42,743 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:44,073 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:44,819 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:44,946 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:45,698 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:46,441 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:47,183 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:47,298 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:48,048 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:49,427 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:50,168 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:50,287 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:51,019 WARN L191 SmtUtils]: Spent 730.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:52,359 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:33:53,096 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:53,221 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:53,952 WARN L191 SmtUtils]: Spent 729.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:54,680 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:55,430 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:55,544 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:33:56,278 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:33:57,047 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:57,791 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:57,915 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:33:58,668 WARN L191 SmtUtils]: Spent 751.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:33:59,418 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:00,176 WARN L191 SmtUtils]: Spent 754.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:00,315 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:01,055 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:02,390 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:03,120 WARN L191 SmtUtils]: Spent 726.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:03,239 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:03,963 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:05,279 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:06,021 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:06,139 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:06,875 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:07,610 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:08,348 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:08,460 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:09,200 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:09,981 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:10,720 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:10,839 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:11,590 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:12,935 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:13,677 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:13,796 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:14,533 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:15,873 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:16,615 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:16,728 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:17,461 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:18,775 WARN L191 SmtUtils]: Spent 1.31 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:19,511 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:19,630 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:20,370 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:21,700 WARN L191 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:22,425 WARN L191 SmtUtils]: Spent 722.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:22,558 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:23,291 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:24,621 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:25,356 WARN L191 SmtUtils]: Spent 731.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:25,472 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:26,216 WARN L191 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:26,956 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:27,695 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:27,807 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:28,548 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:29,328 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:30,074 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:30,196 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:30,945 WARN L191 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:32,285 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:33,032 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:33,151 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:33,929 WARN L191 SmtUtils]: Spent 777.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:35,263 WARN L191 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:36,006 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:36,122 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:36,872 WARN L191 SmtUtils]: Spent 748.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:38,225 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:34:38,962 WARN L191 SmtUtils]: Spent 733.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:34:39,083 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:39,847 WARN L191 SmtUtils]: Spent 761.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:41,130 WARN L191 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:34:41,902 WARN L191 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:42,023 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:42,783 WARN L191 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:34:44,082 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:34:44,835 WARN L191 SmtUtils]: Spent 749.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:44,955 WARN L191 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:45,717 WARN L191 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:34:46,998 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:34:47,738 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:34:47,858 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:34:48,599 WARN L191 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:34:50,279 WARN L191 SmtUtils]: Spent 1.65 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:51,010 WARN L191 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:51,128 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:51,872 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:53,218 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:53,961 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:54,083 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:54,829 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:56,216 WARN L191 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:34:56,970 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:57,088 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:34:57,828 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:34:59,370 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 1258 DAG size of output: 1256 [2019-10-07 14:35:00,111 WARN L191 SmtUtils]: Spent 738.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:00,229 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:35:00,982 WARN L191 SmtUtils]: Spent 750.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:01,731 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:02,477 WARN L191 SmtUtils]: Spent 742.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:02,591 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:35:03,333 WARN L191 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:04,101 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:04,840 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:04,976 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:35:05,710 WARN L191 SmtUtils]: Spent 732.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:07,063 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:35:07,799 WARN L191 SmtUtils]: Spent 734.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:35:07,923 WARN L191 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:35:08,669 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:09,989 WARN L191 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:35:10,734 WARN L191 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:35:10,855 WARN L191 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:35:11,600 WARN L191 SmtUtils]: Spent 744.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:12,948 WARN L191 SmtUtils]: Spent 1.34 s on a formula simplification. DAG size of input: 1262 DAG size of output: 1258 [2019-10-07 14:35:13,697 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1258 [2019-10-07 14:35:13,822 WARN L191 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:35:14,575 WARN L191 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:15,844 WARN L191 SmtUtils]: Spent 1.26 s on a formula simplification. DAG size of input: 1264 DAG size of output: 1260 [2019-10-07 14:35:16,593 WARN L191 SmtUtils]: Spent 746.00 ms on a formula simplification that was a NOOP. DAG size: 1260 [2019-10-07 14:35:16,728 WARN L191 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 444 [2019-10-07 14:35:17,495 WARN L191 SmtUtils]: Spent 764.00 ms on a formula simplification that was a NOOP. DAG size: 1262 [2019-10-07 14:35:17,501 INFO L199 IcfgInterpreter]: Interpreting procedure runTest with input of size 1116 for LOIs [2019-10-07 14:35:17,990 WARN L191 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 1116 [2019-10-07 14:35:18,498 WARN L191 SmtUtils]: Spent 504.00 ms on a formula simplification that was a NOOP. DAG size: 1116 [2019-10-07 14:35:18,614 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:35:19,353 WARN L191 SmtUtils]: Spent 737.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:19,363 INFO L199 IcfgInterpreter]: Interpreting procedure test with input of size 1066 for LOIs [2019-10-07 14:35:19,772 WARN L191 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:35:20,185 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 1066 [2019-10-07 14:35:20,300 WARN L191 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 441 [2019-10-07 14:35:21,037 WARN L191 SmtUtils]: Spent 735.00 ms on a formula simplification that was a NOOP. DAG size: 1256 [2019-10-07 14:35:21,295 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 14:35:21,297 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.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 14:35:21,303 INFO L168 Benchmark]: Toolchain (without parser) took 348210.67 ms. Allocated memory was 140.5 MB in the beginning and 3.7 GB in the end (delta: 3.6 GB). Free memory was 100.8 MB in the beginning and 2.0 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,303 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,304 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1158.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 142.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,304 INFO L168 Benchmark]: Boogie Preprocessor took 173.01 ms. Allocated memory is still 203.9 MB. Free memory was 142.0 MB in the beginning and 132.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,304 INFO L168 Benchmark]: RCFGBuilder took 5027.11 ms. Allocated memory was 203.9 MB in the beginning and 289.4 MB in the end (delta: 85.5 MB). Free memory was 132.6 MB in the beginning and 149.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 138.1 MB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,305 INFO L168 Benchmark]: TraceAbstraction took 341847.07 ms. Allocated memory was 289.4 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 149.4 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2019-10-07 14:35:21,306 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1158.64 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 142.0 MB in the end (delta: -41.5 MB). Peak memory consumption was 32.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 173.01 ms. Allocated memory is still 203.9 MB. Free memory was 142.0 MB in the beginning and 132.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5027.11 ms. Allocated memory was 203.9 MB in the beginning and 289.4 MB in the end (delta: 85.5 MB). Free memory was 132.6 MB in the beginning and 149.4 MB in the end (delta: -16.7 MB). Peak memory consumption was 138.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 341847.07 ms. Allocated memory was 289.4 MB in the beginning and 3.7 GB in the end (delta: 3.4 GB). Free memory was 149.4 MB in the beginning and 2.0 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. 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...